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2003 Vol. 20, No. 4
Published: 2003-04-15
1
DISCUSSION ON BUILDING OF TALENT TEAM AND LEAPING DEVELOPMENT OF ENTERPRISE
QIN Jia-ming
This paper describes the roles of setting up an excellent talent team and a studied organization in the development of enterprise, presents the core and key points for training of high quality enterpriser, high level expects, high skill technician and high efficiency staff for political work, and analyzes the key problems in management of human resource.
2003 Vol. 20 (4): 1-4 [
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2493
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5
PRACTICE AND EXPLORE THE PRO.IECT MANAGEMENT FOR HIGHWAY ENGINERRING UNDER BOT
LIU Hui
This paper describes the practice in the construction of highway engineering made by China Railway General Engineering Co. with project meanagement contract pattern of limiting budget estimate and taking responsible for the surplus or deficits of total financial amount of a project under BOT which is widely used in construction of highway based on a real example.
2003 Vol. 20 (4): 5-8 [
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2539
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9
DISCUSSION ON INTEREST ENCOURAGEMENT SYSTEM OF SOCIAL INSURANCE AND ITS INTEGRATED DEVELOPMENT
TONG Jie
This paper describes the importance of setting up social insurance system and the way for setting up interest encouragement system of Chinese social insurance. Fairness is the basic characteristics of social insurance and should cover insurance and encouragement. The social insurance system with proper encouragement is the development trend of social insurance system.
2003 Vol. 20 (4): 9-12 [
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2520
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13
DISCUSSION OF THE WAY OF EFFECTIVE AND ACHIEVABLE MANAGEMENT IN RAILWAY CONSTRUCTION ENTERPRIZE
WANG Yun-sheng
According to discussing the necessary and the benefit of the effective and achieve management in railway construction enterprise, the article suggests measures for the effective and achievable management with the railway construction enterprises' characteristics.
2003 Vol. 20 (4): 13-15 [
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2503
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16
THINKING ON CONSTRUCTION OF EXPRESS RAILWAY LINE BETWEEN SICHUAN AND CHONGQING
CHEN Hong-nian
The plan of future transport should be worked out for Sichuan and Chongqing based on the construction of existing transport facilities in order to give their important play to develop-the-west strategy and facilitates sustainable and healthy development of economy, because Sichuan and Chongqing should be planned as soon as possible and constructed at right time. Only after the express railway line is completed, can it meet the needs of great passenger traffic volume between Sichuan and Chongqing and reduce the travel time by convenient transport means.
2003 Vol. 20 (4): 16-21 [
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2781
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22
EFFECT OF HIGH EMBANKMENT ON THE THERMAL REGIME OF UNDERLYING PERMAFROST IN QING-ZANG RAILWAY
SHENC Yu, MA Wei, WEN Zhi
Based on observed data of two monitoring sections in Beiluhe test site of Qing-Zang Railway, The characteristics of underlying ground thermal regime after constructing high embankment arc analyzed. Results indicated that permafrost table was raised, the underlying ground temperature increased after constructing embankment. The rising of permafrost table should be attributed to an obvious decrease in fluctuation of temperature at the depth of permafrost table due to the thermal resistance effect of high embankment. Constructing high embankment may cause considerable difference in thermal regime between shade slope and sunshine slope of embankment. The sunshine slope is the most violent heat-absorb surface, while the shade slope presents as a heat-discharge surface. As a result, the thawing extent of underlying permafrost may differ.
2003 Vol. 20 (4): 22-25 [
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2614
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26
DISCUSSION ON THE STABILITY OF SUBGRADE IN PLATEAU PERMAFROST AREA
LI Yan-ping
This paper describes the subgrade disease of trial section on Qinghai-Tibet Railway after a freeze-thaw cycle, analyzes the problems in the subgrade based on observation on the subgrade settlement and proposes the protection measures for ice-riching permafrost and precautions for the construction in plateau permafrost area.
2003 Vol. 20 (4): 26-28 [
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2503
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29
ANALYSIS ON GROUND TEMPERATURE CHANGES OF THE SOILS UNDER DUCT-VENTILATION EMBANKMENT OF QINGHAI-TIBET RAILWAY
NIU Fu-jun, MA Wei, LAI Yuan-ming
Based on two year's data of ground temperature monitored at Beiluhe section of the Qinghai-Tibet Railway, where field-testing embankment was constructed, the engineering effect of duct-ventilation embankment is discussed through analyzing ground temperature changes. Results indicate that duct-ventilation embankment is available to protect the underlying permafrost and even can extend it. It is also Shawn that it is better to bury ducts near the initial ground surface, so that the engineering effect of ventilation embankment can be advanced.
2003 Vol. 20 (4): 29-32 [
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2453
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33
DESIGN AND CONSTRUCTION OF INTEGRAL OUTSIDE TEMPLATE FOR DURABILITY SIMPLE-SUPPORTED BEAM WITH 32 M PRESTRESSED CONCRETE ON QINGHAI-TIBET RAILWAY
CAO Xing-gang
Qinghai-Tibet Railway faces the problems of high altitude, permafrost, great frequency of freeze-thawing, great temperature difference, low oxygen, inconvenient communication and uneasy maintenance of bridge structure. Obviously, it can improve the outside quality of beam body, increase the efficiency and save the investment by successful application of integral movable outside template in construction of durability simple-supported beam with 32 m prestressed concrete.
2003 Vol. 20 (4): 33-35 [
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2498
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36
CONSTRUCTION TECHNIQUE FOR CONCRETE IN PLATEAU PERMAFROST AREA
YANG An-jie, WANG Xiao-bing
This paper demonstrates and analyzes the main technical difficulties, precautions, proportion design and construction quality control for erosion resistant concrete of early strength under low temperature during construction. The principles of proportion design, construction quality control and its evaluation standard arc proposed based on the tests and research.
2003 Vol. 20 (4): 36-42 [
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2458
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43
MEASURES FOR STARTING WATER COOLED ENGINE OF CONSTRUCTION MACHINE UNDER LOW TEMPERATURE IN PLATEAU
LI Shu-de
The different measures for starting water-cooled engine of construction machine under low temperature arc analyzed based on analysis of its starting procedure in plateau. The suitable measures for starting water cooled engine of construction machine under low temperature, during the construction of Qinghai-Tibet Railway in cold weather arc defined through taking different measures for construction machine.
2003 Vol. 20 (4): 43-45 [
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2526
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46
REMOTE SENSING GEOLOGY WORKS OF EASTWARD RAILWAY PASSAGES FOR CHUAN-YU RAILWAY
ZHUO Bao-xi
As an applied article, it introduces the application of remote sensing to scheme comparison of three railway routes leading to cast of ChongQing. Research on the background carried on by using satellite images and engineering geology interpretation by combining satellite images with aerial remote sensing images are described in particular. The situations of three routes, such as rock property, fault structure, unfavorable geology and karst, are primarily ascertained by remote sensing interpretation, which provides objective comprehensive evaluation of geological conditions for scheme comparison. Finally, geological conditions arc comprehensively analyzed and evaluated, on the basis of regional geological tectonic settings, unfavorable geology and major engineering geological problems.
2003 Vol. 20 (4): 46-48 [
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2523
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49
VALLEY GEOMORPHOLOGY AND SELECING RAILWAY LINE IN MOBIE-GONGSHAN REACH OF NUJIANG RIVER
JIANG Zhong-xin
Based on survey along Lujiang river, summarized features of valley geomorphology on plane, longitudinal section and terrace, and gravity land form in Mobie-Gongshan reach of Lujiang river, further discussed its effect for Yunnan-Tibet railway line.
2003 Vol. 20 (4): 49-53 [
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2426
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54
DETERMINATION OF SLAKING LAYER'S THICKNESS OF EXPANSIVE SOIL (OR ROCK) SLOPE IN SOUTHWEST AREA
WANG Xiao-jun, DA ZHi-hua, YANG Wen-hui
The forming mechanism and determining method of slaking layer of expansive soil (or rock) slope are described in the paper. The discrimination and relation between slaking layer and waste mantas are also discussed of expansive soil (or rock)in southwest area. Lastly the zoning layer's thickness of slaking layer and its physical and mechanical properties arc researched.
2003 Vol. 20 (4): 54-58 [
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2426
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59
EFFECTS OF BALLASTS ON TEMPERATURE OF EMBANKMENT IN PERMAFROST REGION
SUN Zhi-zhong, MA Wei
The ballast embankment is one of the positive measures of protecting frozen soils in construction of Qinghai-Tibet railway. Based on data in field, this paper analyzed change of ground temperature under the ballast with two kinds of diameters. In warm season, the action of heat-shield on the ballast with diameters of 5-8 cm is better than that with diameters of 40-50 cm. In cold season, the action of convection is stronger than that with diameters of 5-8 cm. Distribution of ground temperature under the ballast between shade slope and sunshine slope of embankment is asymmetrical, which the ground temperature in sunshine slope is higher than that in shade slope.
2003 Vol. 20 (4): 59-61 [
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2432
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62
PROTECTIVE TECHNOLOGY FOR DISEASE ON RETAINING WALL OF RAILWAY SUBGRADE
LIU Cheng-jun
A brief introduction is given to the causes incurring settlement, cracking and tipping of retaining wall of railway subgrade. The protective countermeasures for disease of the retaining wall are proposed, reference to design and construction of the retaining wall of railway subgrade.
2003 Vol. 20 (4): 62-66 [
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2454
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67
WEATHERING CHARACTER OF RIVER TERRACE BASE ROCKS AND ITS INFECTION TO RAILWAY CONSTRUCTION (PROJECTION)
ZHENG Wei
Xian-Nanjing and Xian-Ankang railway both go through the Mountain Qinling with complex geology condition. According to the example of railway project above, this paper expound that weathering character of river terrace base rocks and its infection to railway engineering such as tunnel, roadbed and bridge. And also introduces the proper way to deal with it. Writer sum up the common characteristic of all those kind of rock effloresce which influence by the case of ground water, mineral, joint and crack etc. Those rock effloresce is covert geology problem at mountainous area. Writer advised the way to raise the veracity in Investigating and Designing, and dealing with rock effloresces in proper project.
2003 Vol. 20 (4): 67-70 [
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2478
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71
OPTIMIZATION ON PAGODA HEIGHT OF LOW PAGODA CABLE-STAYED BRIDGE
LIU Feng-kui, LIN Peng-zhen, SUN Hong-hong
With objective functions the minimum strain energy of girders and minimum height of pagoda, the optimal model of pagoda height of low pagoda cable-stayed bridge is built, and the feasibility of reducing the height of pagoda by adjusting cable's prestress is investigated. Taking a low pagoda cable-stayed bridge as an example, the paper analyze the effect of adjusting cable's prestress when change the pagoda height of low pagoda cable-stayed bridge with single-two and two-spans. The conclusions arc valuable reference for further understand the characteristics of low pagoda cable-stayed bridge and the optimal design of pagoda height of other similar structures.
2003 Vol. 20 (4): 71-74 [
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2726
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75
THEORETICAL AND EXPERIMENTAL STUDY ON STRESS INCREMENT OF EXTERNAL TENDONS IN EXTERNAL PRESTRESSED CONCRETE FLEXURAL MEMBERS AT ULTIMATE STATE
ZHANG Zhong-xian, ZHANG Yao-ting
Basing on the research of seven external prestressed beams, in this paper we analyzed the external tendons of external prestressed beam and studied the whole of the beam deformation, and we deduced a formula with members deflection and end rotation of beam as parameters of external tendons stress under the ultimate state, the calculation formula is relatively simple, combine with this text experiment result combination domestic and international relevant experiment research proceeds the contrast with the calculation value of the deduced theoretical formula, result enunciation; Calculation result agree with the experiment result very well, for this reason this kind of calculation method is simple and viable.
2003 Vol. 20 (4): 75-80 [
Abstract
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2509
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81
DIAGNOSIS OF LARGE-SPAN BRIDGE'S DAMAGE
YUAN Ming, HE Guo-jing
A simple FEM of Ting Kau cable-stayed bridge is built, its dynamic characterizes arc analyzed and many simulated damage cases in the FEM arc investigated by using a structural damage detection method, CMSE, proposed by author. Results indicate that the dynamic characterizes of the simple FEM arc similar to those of Ting Kau cable-stayed bridge and CMSE is the same with flexible structures with low and intense frequencies such as long-span cable-stayed bridge and has satisfying precision in damage detection only using a few low modes.
2003 Vol. 20 (4): 81-85 [
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2532
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86
CONSTRUCTION TECHNIQUE RESEARCH OF CAST-IN-PLACE CONCRETING AND LOWERING BEAM TO THE POSITION OF THE WHOLE-SPAN BOX BEAM FOR QINSHEN SPECIAL RAILWAY LINE FOR PASSENGER TRANSPORTATION
LI Jun
The paper gives the detailed introduction of construction technology, characteristics and construction organization etc. about support frame design, fabrication of beam, lowering beam from high place to the position etc. in the construction of the whole-span box beam for Qinshen Special Railway Line for Transportation, which have the significant reference and application value for the construction of the same variety of projects and the express-railway.
2003 Vol. 20 (4): 86-89 [
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2474
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90
APPLICATION OF MOVABLE FORM-FRAME BRIDGE FABRICATION MACHINE IN TECHNIQUE OF CAST-IN-PLACE FOR MULTIPLE SPANS
ZHOU Xiang-qiao, SUN Xiao-ping
In view of the long construction period of the normal movable form-frame, the movable form-frame bridge fabrication machine with cast-in-place for two or three spans synchronously is presented according to the large proportion of bridge track on Beijing-Shanghai High Speed Railway Line.
2003 Vol. 20 (4): 90-92 [
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2558
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93
A FEASIBILITY STUDY ON QIONGZHOU STRAIT SUBMERGED FLOATING TUNNEL
MAI Ji-ting, GUAN Bao-shu
Along with Hainan economic development, traffic amount will become larger and larger on Qiongzhou strait, so it is inevitable to build a settled submarine channel. Based on a great deal of the meteorological, hydrologic, geologic information on QiongZhou strait and analyzing the state of the art of domestic and foreign researching on submerged floating tunnels, the suggestion of building Qiongzhou strait submerged floating tunnel is put forward, and the feasibility of building submerged floating tunnel is demonstrated.
2003 Vol. 20 (4): 93-96 [
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2539
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97
AN INVERSE STATISTICAL MODEL FOR GROUNDWATER AGE IN DABASGAN TUNNEL AREA
LIU Dan, HE Peng-xu, LI Qi-bin
The paper deals with the principle and method of an Inverse Statistical Model (ISM) for groundwater age, which is used to estimate at groundwater age in Dabashan Tunnel area. The calculation shows that the mean age in the area varies from 45 to 75 year, the longer in the south slope than the North Slope, indicating the hydraulic conductivity of the latter over the former on average. The ISM not only involves hydrodynamic dispersion of groundwater occurred commonly in fractured bedrock medium, but also makes the calculation of groundwater age simple compared with the traditional isotope mathematic model, so that it is of practice value.
2003 Vol. 20 (4): 97-101 [
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2548
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64
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102
THE INSTALLATION AND ADJUSTMENT OF THE OVERHEAD CROSSING FOR QINSHEN DEDICATED PASSENGER SERVICE LINES
LIU Guo-fu
The main content of the article is about the design, structure, principle of work, installation and adjustment for high-speed overhead crossing which is the firstly adopted in the Qingshen dedicated passenger service lines in china.
2003 Vol. 20 (4): 102-104 [
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2509
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105
CONSTRUCTION TECNIQUE FOR TRANSITION PROJECT OF OVERHEAD CONTACT LINE ON EXISTING ELECTRIFIED RAILWAY
HUANG Shuang-sheng
This paper gives an introduction to the features of the construction technique for transition project of overhead contact line on existing electrified railway, including its applicable scope, construction technique, process flow, transition method, processing equipment, quality requirement, safety measures and labour organization, for reference to building the second line and carrying out the innovation for enlarging traffic capacity of existing electrified railway.
2003 Vol. 20 (4): 105-110 [
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2492
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111
PROJECT APPROACHMENT OF INTEGRAL AUTOMATION MONITORING SYSTEM FOR SUBSTATION
WANG Shu-he
This paper describes the necessity of designing an integral automation monitoring system for substation, presents the test pattern for spacing circuit of integral automation system based on analysis of the monitoring items for spacing circuit of integral automation system and puts forward to set up an integral automation monitoring management system in order to collect, transfer, file and analysis the data.
2003 Vol. 20 (4): 111-115 [
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2472
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116
APPLICATION OF AERATED CONCRETE IN CONSTRUCTION
XING Zhan-yong
The applicable scope of aerated concrete is becoming wider and wider in recent years with the attention being paid to the research and development of aerated concrete abroad and at home. This paper describes the characteristics, production process and applicable situation of aerated concrete.
2003 Vol. 20 (4): 116-118 [
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2436
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119
THE THEORETICAL ANALYSIS OF THE ANTI-PULLING CAPACITY OF THE CABLE-ANCHORS UNDER SECOND HIGH SPLITTING GROUTING CONDITION
JIANG Chu-sheng
The second high splitting grunting can greatly increase the anti-pulling capacity of the cable-anchors in the soft ground; the following paper research discussed the mechanism of increasing the anchorage capacity in details, the formula to compute the anchorage capacity is provided in theory, and also provide a simplified method. It has great directed sense in the designing and construction of the second high splitting grouting cable-anchors.
2003 Vol. 20 (4): 119-123 [
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2431
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124
THE APPLICATION OF PLASTIC DRAINAGE BOARD IN THE FOUNDATION CONSOLIDATION OF MOTORWAY EMBANKMENT
ZHOU Dong-sheng
It is a new task of the motorway embankment foundation consolidation. At first, the construction sea area characteristic of the southeast littoral province was summarized. The conclusion was drawn that it was an effective method to driving the plastic drainage board in this geology condition. Driving the plastic drainage board could form the vertical drainage channel, accelerate the vent Of hole water and the concretion of clay, reduce the sedimentation after construction, enhance the load-bearing ability of the foundation. Based on describing the foundation consolidation mechanism of plastic drainage board, the embankment structure shape which should be used at the motorway embankment consolidating by plastic drainage board was introduced; along with the construction techniques and flow of plastic drainage board were recommended. Its Advantage and disadvantage were discussed at last.
2003 Vol. 20 (4): 124-127 [
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2453
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128
CONSTRUCTION TECHNIQUE FOR REINFORCING CONCRETE BY ADHERING CARBON FIBRE
JIAO Yun-zhou
It is a new development of reinforces technology to adhere carbon fiber for reinforcing concrete. This paper describes the construction organization, construction process and quality inspection during the construction of reinforcing concrete by adhering carbon fiber in details based on an example of consolidating Lingang crossing bridge in Tianjin.
2003 Vol. 20 (4): 128-131 [
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2429
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