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1999 Vol. 16, No. 4
Published: 1999-04-15
1
STRUGGLE TO CREATE A NEW PROSPECT FOR JOINT-INVESTED RAILWAYS
SUN Yong-fu
The joint-invested railways had been developed greatly in recent 10?20 years in China. Its developing course and the obtained achievements and expriences are expounded deeply in all-round in this paper. From the viewpoint of development strategy,the author proposes the policy,target and standardized management for developing the joint-invested railways furthermore and the measures winch should be adopted. They have important guiding meanings for present railway construction.
1999 Vol. 16 (4): 1-4 [
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2467
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9
EXPLORATION ON IMPROVING TRAIN OPERATION CONDITIONS FOR JIN-PU CONNECTING LINE
JIANG Zhi-gao
The Jin-Pu connecting line is a connecting railway line between the Jing Shan Railway and the Jin-Pu Railway,Its present situation cannot match with the requirement of raising speed, and the capacity of throat at its connecting ends are strained. Based on the analysis of its existing problems,ac?cording to the train operation conditions and the situation of investment, and combined with [he na?tional circumstances,the improving schemcs arc proposed, and the benefits of the reconstruction schemes are analyzed and discussed.
1999 Vol. 16 (4): 9-11 [
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2474
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12
SUGGESTION ON DEVELOPING STANDARD GAUGE METER GAUGE TRAIN TO PROMOTE THE IMPLEMENTATION OF INTERNATIONAL RAPID THROUGH TRAFFIC
JIANG Hong
At first,the paper introduces the“ general situation of the standard-narrow gauge train of the next generation”trial-produced by Japan. During this new-type train running between the standard gauge railway and the narrow gauge railway through a wheel base exchange rail with a length of about 20 meters.the wheel-base of the train may be changed automatically within 2 minutes,and after locked automatically.the train can run continuously without hindrance. In view of there are three different track gauges(1 135,) 067 and 1 000 mm)of railways in China and Southeast. Asia,the author proposes the following suggestion,i. e.developing a new-type train whose wheel-base may be changed automati?cally under the three different track gauges,so as to promote the implementation of international rapid through traffic as soon as possible.
1999 Vol. 16 (4): 12-14 [
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2540
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15
ECONOMIC ANALYSIS ON THE RAILWAYS TOWARDS XIZANG
MA Hong-kuan
In this paper,we discussed the necessity and urgency that the railways towards Xizang should be built as soon as possible by the relations between the basic installations and the effective demands,and thought about its feasibility and the problem of project finance.
1999 Vol. 16 (4): 15-17 [
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2519
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18
STUDY ON THE RAILWAY TRANSPORT AND SUSTAINABLE DEVEL?OPMENT IN XINJIANG
Kemilam，Hairet
In this paper, the regional environmental characteristics of the railway transport development of Xinjiang are studied,a systematic analysis is made on its current situation and features. The targets,constructions and countermeasures of Xinjiang’s railway transport are put forward finally,so that the practical basis of decision-making are provided for implementing sustainable development and allocation of Xinjiang’s railway transport.
1999 Vol. 16 (4): 18-24 [
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2484
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25
A NEW METHOD TO DETERMINE THE LENGTH OF TRACK TRANSI?TION SECTION
WANG Yu,,ZHAI Wan-ming, WANG Qi-chang，LIN Liang-ming
After a concise introduction to the track transitions and the theory of vehicle-track cou?pling dynamics,the vehicle/track interactions on the ballast track and ballastless track transition section are systematically analyzed in this paper. The evaluation, indexes are chosen,and a new method, called critical transition scot ion length,is put forward in determine track transition section length.
1999 Vol. 16 (4): 25-28 [
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2524
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29
SOME PROPOSALS ON CONSTRUCTION SURVEY OF HIGH-SPEED RAILWAY
XU Wang-peng
High-speed railway is a synthetical system engineering with complex technic and high precision construction. Its track-laying procedure is essentially different from the procedure of common railways. According to the construction survey procedure and based on the high smooth-going track standard and theory deduction,the author puts forward some proposals. The main point is that the interval of plane survey control piling shouldn't be more than 300m,the precision of angular measure?ment shouldn’t be more than 5﹟。and the interval of vertical control pile of hase shouldn’t be more than 400 m. It is no necessary to raise survey precision excessively.
1999 Vol. 16 (4): 29-32 [
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2512
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33
OPTIMIZATION ON DESIGN OF RAILWAY PASSENGER STATIONS
WANG Yu-jun
The paper proposes the important essentials which should be taken into attention con?cerned with the optimization on design of railway passenger stations as follows:(1)the design of rail?way passenger station should be matched closely with the urban planning, (2)the cooperation of rail-way passenger traffic with other transport mode, and (3) the main important essentials on design of railway passenger stations.
1999 Vol. 16 (4): 33-36 [
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37
CALCULATING METHOD OF TORSION-BENDING ANALYSIS OF SIM?PLY SUPPORTED STRAIGHT CONCRETE BEAMS ON RAILWAY CURVE
ZHONG Ming,XU Ke-bin,YUAN Chang-qing
Based on the torsion-bending theory of thin-walled girder,a calculating method of continu?ous girder on elastic brace and the derivation of three-dimensional straight member stiffness matrix, are presented to analyze spatially the straight concrete beams. Namely,the diaphragm is regarded as e?lastic braces,and the beam as continuous girder on elastic brace. Both of the beam’s internal force un?der the eccentric load and the correponding internal force of diaphragms are calculated by this method.In the end of this paper, a comparison is made between the proposed method and the traditional method by a numerical example.
1999 Vol. 16 (4): 37-41 [
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2522
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42
CONSTRUCTION TECHNIQUE THAT BRING PRESTRESSED EQUIVALENT PRESSURE TO BEAR ON NO. 0 BLOCK CANTILEVER BRACKET OF CONSTRUCTED BRIDGE
WANG Zhao-hui
The No. 0 block of concrete continuous girder is in complicated stress state under the action of big bearing support counterforce and prestressed stress in three-dimensions. The phenomenon of stress centralization in soleplate and costal board nearby the bearing support is in evidence. It expends quite longtime in the duration, of concrete construction* because of the very large amount of concrete. It is easy that the asymmetric distortion of bracket crazes the concrete. The paper puts forward the construction method that bring equivalent prestressed pressure to bear on No* 0 block bracket of cantilever constructed bridge. This method can availably prevent the concrete crack and economize very much charge wiien it is compared with the traditional method that throw advanced press with conversion weight. At the same time, the paper introduces the design thinking of the light bracket which can be consulted and used for reference with similar engineering.
1999 Vol. 16 (4): 42-46 [
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2511
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47
VENTILATION DESIGN FOR WUSHTSHAN TUNNEL
GAO Zhen-zhong,XIE Hong-tao
In the past times, the transverse ventilation design or semi-transversal ventilation design were usually adopted for the long tunnel on high-rank highways, while the longitudinal injection ventilation design was only adopted in recent few years. The paper introduces in detail the longitudinal injection ventilation design for the Wushishan Tunnel, which may be used as reference for the ventilation design of other highway tunnels.
1999 Vol. 16 (4): 47-52 [
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53
WATERPROOF AND DRAINAGE IN DESIGN AND CONSTRUCTION OF CHANGLIANGSHAN TUNNEL
GAO Shu-feng
The waterproof technique is the part and pared in tunnel. If it have not good waterproof measure, the groundwater will enter into and hurt the tunnel. Now, the most serious disaster in the underground engineering is the seepage water. Repairing the seepage water is difficult and costly. So， it is arresting from design, the design and construction should be elaborated. This paper introduces the principles of waterproof and drainage, the waterproof in the entrance of tunnel.the grouting technology,the earlier supporting,the drainage in tunnel lining,laying waterproof layer,the siructural waterproof and the waterproof in constructing sew. This paper introduces emphatically the waterproof design and construction technology in tunnel.
1999 Vol. 16 (4): 53-57 [
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4825
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58
APPLICATION OF SYNTHETIC DE WATERING AND DRAINAGE TECHNIQUE DURING CONSTRUCTION OF TUNNEL WITH PLENTY- WATER EXTREMELY-WEAK SURROUNDING ROCK
CUI Hua-lin
During construction of tunnel with plenty water extremely-weak surrounding rock at the entrance section of the Jiling Tunnel, the applied key technique was a synthetic dewatering and drainage technique which consisted of the application of horizontal extra-lead negative-pressure water pumping, advanced-type shotcrete fracture grouting with deep and long cased boreholes. deep-well dewatering, grouting with large pile sector, as well as the drainage and leaking stoppage at working surfaces, During the implementary procedure of these technical measures, the supervision, measuring and reversing parameters repeatedly were be the very effective control means.
1999 Vol. 16 (4): 58-61 [
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2476
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62
PRELIMINARY TALKING ABOUT ROCK BURST OCCURRED DURING MEASURES OF CONSTRUCTION OF TUNNELS
YANG Bao-zhong
Combined with the construction of the Qinling Tunnel and the Tatpingyi Head Drift in Sichuan Province, the author puts forward the systematical analysis and research on the mechanism, conditions，forecast and preventive methods for the rock burst occurred during the construction works. A series of effective solving measures are proposed. They may be applied effectively and useful as reference.
1999 Vol. 16 (4): 62-65 [
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2504
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66
DEVELOPMEANT ON CAD SYSTEM FOR RAILWAY CULVERT
DONG Xu-fan,WU Ming-hua,CHEN Li-ping，LI Bin,HUANG Jian-zhong
This paper introduces the CAD of railway culvert,including the overall design scheme and the system composition. The basic concept of which creating 2D drawing by applying parametric method is also discussed. In the end, the key technology of the culvert CAD is explained.
1999 Vol. 16 (4): 66-69 [
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2594
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70
EXPLORATION OF MAIN PROBLEMS ON GEOLOGIC ENGINEERING WORKS DURING RAILWAY CONSTRUCTION IN RECENT TIMES
HE Zhen-ning
For railway construction in China in the recent more than 30 years, the railways were usually constructed in the regions with complex and diversified natural conditions and geologic structures. A large amount of problems concerned with very conspicuous geologic works and serious geologic disasters often occurred. The paper puts forward analyses on so much problems perfectly and in detail， and proposes the guiding principles, new conceptions, advanced technologies and specific measures for solving these kinds of problems one by one. They are valuable as reference with guiding meanings for constructing railways in the difficult regions hereafter.
1999 Vol. 16 (4): 70-74 [
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2477
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75
STUDY ON TYPICAL CONCEPTUAL MODELS FOR KARST COLLAPSES IN RAILWAYS
WANG Jian-xiu,YANG Li-zhong,LIU Dan,HE Jing
Based on the mechanism analysis of karst collapses along several railways, the conceptual models of seepage cap soil，impermeable cap soil，karst cave with thin roof and artificial bed of cutting slope arc established and expressed with examples. The analysis by dividing the study fields into several typical conceptual model provides a basis for the establishment of predicting models and the prevention and cure of the hazard.
1999 Vol. 16 (4): 75-80 [
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2543
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81
SETTLEMENT AFTER CONSTRUCTION OF EMBANKMENT WITH SOFT ROADBED IN KONGLONG-JIUJIANG SECTION OF JING-JIU RAILWAY AND ITS ANALYSES
GU Xiang—sheng
The statistic analyses on practically measured settlement data for the embankments with soft roadbed have been put forward. The amount of settlement after construction and the change of the speed of settlement are forecasted. At the same time, the author analyses the factors which influence the settlement after construction as follows： the settlement of the main body of embankment. the different periods of construction, and the soft soil layers beneath the consolidated laver of the soft roadbed.
1999 Vol. 16 (4): 81-85 [
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2506
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86
STUDIES ON GROUNDWATER EFFECTS AND SLOPE STABILITY OF WATER-ROCK SYSTEM
ZHONG Sheng-hui
This paper deals with the stability model of slope affected by groundwater on the basis of description of the conceptual model of slope stability. A prediction of slope stability has been given for a studied case.
1999 Vol. 16 (4): 86-90 [
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91
APPLICATION OF REMOTE SENSING ON ENVIRONMENTAL EVALUATION OF ENGINEERING GEOLOGY FOR XINZHAI TUNNEL IN NEIKUN RAIWAY
SUN Bao-zhong
With synthetic and analytical method of geology, geomorphology, hydrology and engineering geology, the article makes use of satellite and aeronautic remote data to ascertain the geological disasters，such as landsilde, collapse, rock hea， funnel, etc, in Xinzhai tunnel in Neikun railway;evaluating its environment of engineering geology and providing basis of rational design and construction for the tunnel. The way of our work in the article has general sense for studying engineering geological environment of a region, especially in a river valley, in which the basic work is weak, natural condition is adverse and ground work is difficult.
1999 Vol. 16 (4): 91-95 [
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2514
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96
TECHAIQUES ON ROCK MASS CONTROL BLASTING
LI Feng-chao
Based on the practical application example at Shangrao-Luoqiao Section on Zhe-Gan dou?ble line railway,the author attempts to demonstrate the application mode,method and problems which should be taken into attention for the rock mass control blasting techniques during the construction of the second line along the existing railways or the reconstruction of the station and yard. It is required not only to guarantee the safety of running operation，but also to ensure the successful proceeding of engineering works, These techniques have certain practical meanings and are valualbe for populariza-tion.
1999 Vol. 16 (4): 96-98 [
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99
PROSPECT OF DRILLING AND BLASTING METHOD FOR CON?STRUCTING EXTRA-LONG TUNNEL IN CHINA
ZHANG Jin-fu
The construction practices of Qinling Tunnel on Xi'an-Ankang Railway Lines make the synthetic technical level of tunnel construction in China up to a new stage. The paper introduces em?phatically the general situation for constructing Qinling Tunnel by the drilling and blasting method. Several understandings concerned with tunnel construction by drilling and blasting method arc ex?pounded. And the prospect of the drilling and blasting method for constructing extra-long tunnel in China has been proposed as well.
1999 Vol. 16 (4): 99-102 [
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2494
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103
WALK-TYPE BEAM-HOISTING MACHINE USED FOR ERECTING BEAMS OF LONG-SPAN CABLE-STAYED BRIDGE
YAN Huai-bing,WANG Yuan-gen,GUO Fu-yuan
Combined with the requirements for erecting beams of the long-span cable-stayed bridge, the paper introduces briefly the essentails of design scheme,the specialities of mechanism and the situ-ation of practical application of the 170t walk-type beam-hoisting machine used for erecting the beams of a long-span cable-stayed bridge.
1999 Vol. 16 (4): 103-106 [
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2460
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107
PRELIMINARY ANALYSES ON DESIGN OF VRV SYSTEM IN TECHNO-LOGICAL AIR-CONDITIONING AND ITS OPERATION SITUATION
WANG Zheng
Combined with the engineering calculations,the paper puts forward the preliminary analy?ses on the design features concerned with the following aspects;controlling of temperature precision in technological air-conditioning by VRV system ?supplying of fresh air by constant temperature and con?stant humidity unit used in computer room,and controlling of humidity precision in technological air- conditioning by VRV system* Its operation situation in a whole year was presented as well.
1999 Vol. 16 (4): 107-109 [
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2461
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110
DESIN OF HEAT EXCHANGE STATION FOR CENTRALIZED HEAT SUPPLY OF DAMINGGONG RESIDENTIAL DISTRICT BUILT BY XI’AN RAILWAY SUB-ADMINISTRATION
ZHANG Li-juan
The paper introduces the design of heating system of the heat exchange station for the centralized heat supply of the Daminggong residential district built by the Xi'an Railway SubAdminis?tration.Combined with the specialities of the engineering project and based on the principles of econo?my of investment and power supply and fulfilling the effect of heat supply,the contents concerned with following aspects are explored emphatically ;the selection of equipments for the technological system of the heat exchange station,the defined pressure of the system,the regulation of heat supply for the system,the return of condensate water，etc.
1999 Vol. 16 (4): 110-113 [
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114
EXPLORATION ON SELECTION OF MATERIALS FOR RAILWAY BAL?LAST
LU Xiu-ying
The paper puts forward an analysis on the influence factors for evaluating the quality grade of railway ballast,From the viewpoint of petrology,concerned with the limitation of rock prop?erties of existing ballast materials, the names of three main kinds of rocks which may be classified as I grade ballast or not are pointed out}as well as the names of the high-quality rocks distributed in China are proposed. Several steps and several suggestions are also proposed for engineering technicians concerned with how to select the superior-quality ballast and enlarging the selection scope of rock ma?terials.
1999 Vol. 16 (4): 114-122 [
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2554
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123
CONSTRUCTION OF ROADBED BY FILLING ROADBED WITH FINE SAND
PEI Sheng-yan,LI Yan-long
During construction of roadbed by filling the roadbed with fine sand on Tai′-Liaozhing Section of the Shen-Shan express way,the selection of construction machinery,the construction pro?cedure and the testing methods are introduced in this paper,as well as the problems which occurred usually in the working procedure and their treatment.
1999 Vol. 16 (4): 123-126 [
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127
COMPREHENSIVE BUSINESS BUILDING OF NATIONAL TEXATION BUREAU OF SHANXI PROVINCE
LIU Yan-xiang,WEI Yi-qing,YANG Ping
The paper expounds the construction techniques of the rigid reinforced concrete piles for the comprehensive business building of the National Texation Bureau of the Shanxi Province. These techniques solve successfully the welding deformation of the long welding seams of the steel struc-tures* synthetic assembly in working site,as well as the construction essentials on the mould plate, re?inforcing bars，concrete engineering,etc,for the section-steel concrete piles.
1999 Vol. 16 (4): 127-130 [
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2540
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