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1996 Vol. 13, No. 4
Published: 1996-04-16
6
INFORMATION TECHNOLOGY AND RAILWAY SIGNY-DESIGN
Deng Fujia
The present applica tion situa tion, the dev elop tendency a nd the existing problems o f the info rmation techno logy in the rai lway surv ey-desig n a re analy zed in this paper. Based o n these analy ses, the sugg estions fo r dev eloping the info rmatio n techno logy in the railway surv ey a nd desig n in o rder to promo te the raising of i t s technical lev el are proposed f rom the ov erall point of view.
1996 Vol. 13 (4): 6-9 [
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A NEW STADIA MEASUREMENT FOR ELIMINATING ERROR NO MORE THAN HALF- METER
Sun Ji zho ng
The paper int roduces the current o perating method in the stadia measurement and i ts existing problem wi th maximum er ro r mo re tha n hal f- meter. A new metho d for eliminating these erro rs has been propo sed. Thi s method i s feasible theoretically, v ery simple, and rapid and conv enient fo r o peratio n.
1996 Vol. 13 (4): 10-15 [
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2452
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16
BRIEF DISCUSSIONS ON RAISING SPEED, ENLARGING TRAFFIC CAPACITY AND COORDINATION OF CAPACITIES OF LINE AND STATIONS FOR EXISTING RAILWAY LINES
Ao Yunbi
Combined wi th the technical reco nst ructio n eng ineering of raising speed and enlarging capaci ty for the Da-Yu Section of the Xiang-Yu Railway , the pa per analy zes th e problems concerned wi th the raising speed, the enla rging t raf fic capaci ty and the coo rdina tion of the capaci ties o f line and sta tions for the existing railw ay lines f rom th e follow ing aspect s: the railw ay standard , the tack st ructure, the type of lo comotiv es , the capaci ty o f the terminals, etc.
1996 Vol. 13 (4): 16-20 [
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2473
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21
EXPLORATION ON LONGITUDINAL - SECTION DESIGN OF TRESTLE BRIDGE FOR RAILWAY TRAIN FERRY
Tao Minghe
The dev elopment o f the train ferry engineering in our railw ay s is rather slow , and there are no relativ e systematical stipulatio ns in the Desig n Code. In accorda nce wi th the specialities of the t rain ferry, the paper ex plores in detail the lo ngi tudinal-section design of i ts t rest le bridg e.
1996 Vol. 13 (4): 21-25 [
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2451
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26
STUDY ON CONSTRUCTION METHODS OF RAILWAY PRESTRESSED CONCRETE BRIDGES
Jia Zhiwu
The paper introduces tho ro ughly the principal co nst ructio n methods of the prest ressed co ncrete beams in our country , as w ell as thei r applications and developments in the construction o f Chinese rai lway bridges. Based on the analy ses a nd the comparisons, the important applying sco pes of these co nst ructio n methods are pointed o ut.
1996 Vol. 13 (4): 26-30 [
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2584
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31
CONSTRUCTION OF 20m PRE-TENSIONED PRESTRESSED CONCRETE HOLLOW PLATE BEAM OF HIGHWAY BRIDGES
Zhao Jiang uo
The paper discussed the co nst ructio n technolog y of pre-tensioned prest ressed concrete hol low plate beam f rom the techno logic principle, characteri stic and const ruction technique. Wo rked out the w orking methods about technologic equipment s and technologic process. For cont rol the concrete quali ty to ensure tensio ned quality o f the beam , used the double cont ro l methods, that is: to co ntrol the check betw een the tensio ned st ress and ex tenison va lue.
1996 Vol. 13 (4): 31-35 [
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2511
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36
DESIGN AND CONSTRUCTION OF THE VERTICAL HOISTING SCHEME FOR THE STEEL-TUBE ARCH RIBS OF LIANTUO BRIDGE
Wa ng Daobin Lu Zhichu Lei Yo ngw ei Du Lixin Peng Tingjia
Liantuo Larg e Bridge is one o f the key project for the special highw ay transportation in Three Go rges Pro ject. In thi s paper , the details of the v ertical Ba rg an hoisting scheme for the steel-tube arch ribs of this bridge are presented. Meanwhile , the const ruction sequence and the key point s o f the construction technique a re described also.
1996 Vol. 13 (4): 36-42 [
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2510
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43
NEW CONSTRUCTION METHOD OF PROTECTIVE PILES FOR BRIDGE PIERS AND ABUTMENTS
Li Deng fang
The paper introduces brief ly a new method o f set ting th e pro tective measruing pi les in the construction of bridge piers and abutments. The superio ri ties o f thi s new method a re pointed out by compa rison wi th the tradi tional method.
1996 Vol. 13 (4): 43-45 [
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2475
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46
PROBLEMS ON CONSTRUCTION VENTILATION OF WUZHISHAN TUNNEL
Liu Shunian Cui Ying zhe Fan Peng
The const ruction v enti latio n technique, w hich w as ado pted during the co nst ruction of the Wuzhi shan Tunnel o n the Jing -Jiu Rai lw ay Line, is the ef fective measure applied ag ainst the high g round temperature and the high pollutio ns. Thi s techno logy has been described comprehensiv ely in the paper , and the sugg estions fo r doing w ell the const ruction v enti la tio n fo r the double-t racked lo ng tunnels a re proposed. It is v aluable a s reference fo r the const ruction of the double-t racked lo ng tunnels , especially fo r the lo ng tunnels wi th parallel heading adi ts.
1996 Vol. 13 (4): 46-53 [
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54
PRACTICAL STRESS MEASURING RESULTS IN BOREHOLES AT QINLING TUNNEL AND DISCUSSIONS
So ng Binglin
The mea surement s of g ro und st resses by using the hydraulic cracking method w ithin the deep boreholes w ere pro ceeded at the Qinling ex t ra-lo ng tunnel di st rict. Based on the practical measuring result s, and combined w ith the g eological ci rcumsta nces at the measuring point s, the paper makes the discussions o n the follow ing impor tant aspects: the inf luences of topog raphic-g eomo rpholog y o n the measuring resul ts, the co ncent ratio n o f st resses, the g round st resses at the deep po rtions, etc. The result s show tha t the gro und st resses at Qinling ex t ra-long tunnel district hav e been ex pressed in some speciali ties mainly by the g rav itatio nal st ress-field. Finally , combined wi th the engineering practices, the paper discusses the pro blems co ncerned w ith the axial selectio n of the tunnel, the rock burst during construction, etc.
1996 Vol. 13 (4): 54-59 [
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60
METHOD OF DETERMINING THE MOST DANGER FAILURE SURFACE OF SOIL
Zhang Guoxia ng
In thi s paper, the stability safety coefficient o f a point in soi l and the judgment method of the w hole soil stability are presented according to the Mohr-Coulomb st reng th theo ry , a nd th e method o f determining the most dang er failure surface o f soi l i s proved by the theo ry. The stability o f w hole soi l ca n be a nalysed by the who le soil st ress a nalysed result s. The metho d can be used also to a nalyse the soi l stabi li ty problem of g round bearing capaci ty and slo pe stabili ty. The g round bea ring capaci ty is analy sed in thi s paper , a nd i t s resul ts show that the cal culated bearing capacity in this metho d is mo re closer to the sug gested v alue of sta nda rds than the t raditional pla stic load. The practice and co rrect of this method are tested and verified.
1996 Vol. 13 (4): 60-65 [
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66
SEV ERAL N UM ERICAL-PHYSICAL STAT IS TICS ON GROUND SUBSIDENCE AT TAI′AN DISTRICT
Zhu Dali
The author made an inv estiga tion on the resul ts o f the treatment fo r the g round subsidence at the Tai′an Railw ay Sta tio n on the Jin-Pu Rai lway Line in 1995. The subsidence section has been t reated by g routing for 10 yea rs. Now , the subg rade i s stable and the traf fic is reg ula r. From the v iew point o f hydrogeolog y , the paper analyzes and finds out the relations between the g ro und subsidence a nd the pumping w ells in such dist rict. It may be taken as reference fo r analy zing the reaso ns of subsidence under the simi lar condi tio ns.
1996 Vol. 13 (4): 66-70 [
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71
TRY TO DETERMINE BEARING CAPACITY OF HYPABYSSAL ROCK BY APPLYING SYNTHETIC PROSPECTINGMEASURES
Zhu Jia nnong
The hy pabyssal ro ck is a kind o f special rock. There has been no defini te rule fo r determining the bea ring capaci ty o f thi s kind of rock by existing di fferent standards at home. A large amount o f data and info rmatio ns for the Tertiary rock at the Nanning Qingch uan Great Bridge hav e been obtained f rom ma ny measuring a nd testing metho ds, such as the compressio n test , the standard penet ra tion test , the dynamic penet ra tion and soil test, etc. Based on the above data a nd combined w ith the relativ e sta nda rds and document s, the conceptio ns and the metho ds for determining the subg rade bea ring capaci ty o f the hypaby ssa l rock a re pro posed in thi s paper. Finally , the sugg ested values fo r desig n are giv en.
1996 Vol. 13 (4): 71-77 [
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78
SOLIDIFICTION TREATMENT REINFORCED BY CHEMICAL GROUTING FOR OVERBURDEN KARST GROUND
Cheng Jianji
The pa per ex po unds the relatio ns betw een the karst g round a nd the selection of the foundatio ns. Based o n these rela tions , the paper introduces the chemical g routing technique by using cement-w aterg lass. Tw o ty pical engineering ex amples a re also int ro duced. The particular ef fect fo r treating the w eak ka rst gro und by chemical g routing has been explained sufficiently.
1996 Vol. 13 (4): 78-84 [
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85
DISCUSSION ON APPLICATION OF DRILLING TECHNOLOGY W ITH HOLEWALL PROTECTED BYMUD IN RAILWAY ENGINEERING GEOLOGICAL DRILLING
L iY ouqing
C om b ined w ith the cha racte rist ic o f ra ilw ay eng inee ring g eo log ica l dr illing , the feasibility o f app ly ing the dr illing techno log y w ith ho lew a ll pro tected by m ud, the av ailab ility o f the mud character, the conv en ience o f m ak ing m ud, as w el l as the technique leve l o f w o rke rs a ffected on this techno logy have been d iscu ssed in the pape r.
1996 Vol. 13 (4): 85-88 [
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89
SEVERAL PROBLEMS ON GENERAL LAYOUT DESIGN OF XI′ AN RAILWAY TERMINAL
Zheng Qiuro ng
Based on the analy ses on the v ehicle f low s of the Xi′an Railw ay Terminal and thei r passage w ay s, a nd combined w ith th e Xi′an urba n planning , the follow ing problems w hich are co ncer ned wi th in the Genera l Lay out Planning of the Xi′a n Terminal are discussed in this paper, such as: the leading-in schemes o f the new railw ay lines, th e selection of the posi tio ns o f the south a nd the no rth ci rcular railw ay lines, the selection of the po sitio n o f the second passeng er sta tion, dev elo ping the ro le of the thi rd railw ay line betw een Hua ng jia zhai and Xianya ng , etc. The autho r′s co nceptio ns are also pro posed, and they are valuable fo r reference.
1996 Vol. 13 (4): 89-96 [
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97
DISCUSSION ON POSITION SELECTION OF FACILITIES IN RAILWAY TERMINAL AND COORDINATION WITH URBAN PLANNING
Liu Gaohu
The di st ributions of the dif ferent facili ties in a railw ay terminal are v ery closely rela tiv e wi th tha t ci ty. They a re not o nly dependence but also constraint wi th each other. Therefore, the relatio nship betw een the rai lway and the urban si tuatio n should be treated v ery well in the desig n procedure. According to the analy ses o n the reqiurements of the interface betw een railw ay facili ties with the urban si tua tio n and the specialities of themselv es, the autho r proposes the sug gestions which sho uld be taken into at tentio n concerned wi th the posi tio n selectio n of the main facili ties in the rai lw ay terminal a nd the coo rdinatio n wi th the urban pla nning.
1996 Vol. 13 (4): 97-100 [
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2489
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101
ACTION OF TRACTION DISTRICT ON DOUBLE TRACK ELECTRIFIED RAILWAY AND ITS IMPROVED SCHEME
Liu Jiamei
Acco rding to the analyses o n the action of the t raction dist rict in the double t rack electrified rai lw ays and it s applica tion ef fects, and combined wi th the recent popula ri za tion of sev eral new tech niques and new equipments such as the remote cont rol system, the load disconnecting swi tches, etc, the a uthor proposes an improv ed “ remo te cont rol equipment+ load di sconnecting swi tch” scheme fo r the tractio n dist rict. The feasibili ty , reliabili ty and the superio ri ties of this improv ed scheme are discussed in this paper. A new thinking for desig ning the t raction pow er supply has been prov ided.
1996 Vol. 13 (4): 101-103 [
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104
COPPER-ALUMINIUM ALLOY CONTACT WIRE WITH HIGH STRENGTH
Wu Cheng san
The paper int roduces a high-st reng th co ntact w ire fo r using in the high-speed rai lw ay wi th running speed 400km /h.
1996 Vol. 13 (4): 104-109 [
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2485
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110
RESEARCH ON INSERTING DEPTH OFNEWTYPE THIN-WALL LONG STEEL-POLE
Zhang Xin Zhao Feng
Thi s a rticle i s the ex perimental analysis and the theo retical resea rch on the inserting depth o f the new ty pe thin-w all long steel-pole. From this w o rk, the fo rmula fo r co ntro ling the inser ting depth w as obtained for the fi rst time, w hich has great referential v alue on manufacturing.
1996 Vol. 13 (4): 110-118 [
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2485
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119
CHINESE RAILWAY CONSTRUCTION ENTERPRISES MUST SUIT THE NEEDS OF INTERNATIONAL ARCHITECTURAL MARKETS
Xin Shi Li Tongg uo
As the reform and open policy has been dev elo ped in depth, the railway co nst ruction market s wi ll be opened g radually by th e gov ernment in order to release the const raints o n the natio nal eco nomic developments by the rai lw ay as soon as possible. Due to th e rush in o f the foreig n investment s and the fo reig n merchants, the national rai lway co nst ructio n market wi ll be conv erted into a big inter natio nal arena. Therefo re, the na tional rai lway co nst ruction enterprises wi ll be faced wi th serious challenge. The author proposes sev eral o pinio ns on how to face w ith this challenge.
1996 Vol. 13 (4): 119-123 [
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124
QUANTIZATION OF INDEXES FOR EVALUATION OF SCIENCES AND TECHNOLOGY ACHIEVEMENTS
Zhu Shihui
The paper pro poses a set of qua nti zatio n models o n index es fo r ev aluating the sciences and techno logy achiev ement s. Larg e amount of complex ma thematic calculatio ns and the t reatment o n it s w hole procedure are reali zed th roug h the desig n o f the computer sof tw ares.
1996 Vol. 13 (4): 124-131 [
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132
PROBLEMS ON IMPLEMENTATIONS OF THE RAILWAY TEST AND EVALUATION STANDARDS FOR STRENGTH OF CONCRETE
Xie Wenhao
The pa per pro poses the specific sugg estions co ncerned w ith the implementatio ns o f the TB10425- 94 in the co nst ructio n o f new rai lw ay lines and the test s and evaluatio ns in batches fo r the rai lw ay precast co ncrete beams. The pro blems which sho uld be paid a ttention to in the specific applicatio ns o f the interim co nv ersion schemes are also proposed. They are va luable as reference for the engineerirg desig n a nd co nst ructio n technica l staf fs in the po pulari za tion and implementa tion o f the TB10425- 94.
1996 Vol. 13 (4): 132-136 [
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137
COMPUTER- AIDEDMANAGEMENT DURING CONSTRUCTION OF RAILWAY ENGINEERING PROJECT
Gu Bao nan Liao Li zhao Li Hai feng
The pa per describes the ov erall structure of the computer - aided manag ement system fo r the engineering project s. The content s a nd the ef fects of the computer - aided manag ement during const ructing a railw ay engineering pro ject are ex plored preliminarily. The sugg estio ns fo r making the dev elop a nd the research w orks o f the computer- aided manag ement system fo r the rai lway engineering projects are also proposed.
1996 Vol. 13 (4): 137-141 [
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