Archive

15 April 2006, Volume 25 Issue 2 Previous Issue    Next Issue

---

For Selected:

Download Citations EndNote Ris BibTeX

Toggle Thumbnails

Select

Research and application on plan for city river bridgescape ZHANG Peng-tao，YAO Qi-ming，JIN Xin-hua 2006, 25(2): 1-3.  Abstract ( )   PDF (319KB) ( )   With the fast developing of economies and the rising stan dardof living，plan for bridgescape on the city river has been attracted atention gradually．For improving city environment and cityscape，the problems of bridgescape on the domestic river were introduced and the plan idea for bridgescape on the city river and the principle of renovation and construction were put forward．As an example，the application of idea and principle on Suzhou River was introduced．It was a good reference to the plan for bridgescape on the city river in China． References | Related Articles | Metrics

Select

Reinforcing effect analysis of converting simply-support into continuous for multi-span T shape free beam bridge JIN Xin-hua，YAO Qi-ming，ZHANG Peng-tao 2006, 25(2): 4-7.  Abstract ( )   PDF (255KB) ( )   Converting simply-support into continuous is the effectual reinforcement measure to improve ultimate bearing capacity of multi-span T shape flee beam bridge But some problem was also found in practice．Take example for reinforcing T shape free beam bridge with double spans(16.76m+16.76m)by using the measure，the result of theoretic analysis and calculation indicates that the bend bearing capacity in the middle of span Was improved，as the same time，the sheer bearing capacity of the continuous end of beam Was reduced.The advice Was advan ced that reinforcing the sheer bearing capacity of the continuous end of beam when the measure Was adopted to improve bend bearing capacity of multi-span T shape simply-support beam bridge． References | Related Articles | Metrics

Select

Calculating model determining increasing coefficient of internal forcees for continuous box girder bridges CHENG Xiang-yun 2006, 25(2): 8-11.  Abstract ( )   PDF (290KB) ( )   To calculate the increasing coefficient of internal forces for continuous box girder bridges the calculating model with two spring bearings is established．The analytical results of an example by this model coincided satisfactory with those by the traditional method,and it simplified the calculation process to a certain extent with the latter． References | Related Articles | Metrics

Select

The confirmation closure jacking force of continuous rigid frame bridge ZOU Yi-song，SHAN Rong-xiang 2006, 25(2): 12-15.  Abstract ( )   PDF (245KB) ( )   The analysis formula ofjacking force is deduced when the mid-span of a continuous rigid frame bridge is in closure．Based on Heergou extra-long span bridge，the computation and accomplishment of jacking force of the continuous rigid flame bridge are introduced． References | Related Articles | Metrics

Select

The new technology of strain-measurement for bridge static-dynamic load testing WANG Jian-hua，HU Da-lin，BAI Peng-xiang 2006, 25(2): 16-19.  Abstract ( )   PDF (268KB) ( )   During the bridge static-dynamic testing,how to decrease various interfering factors，and to improve the degree of reliability for eficiency of detection and measured value，is the problem that Was explored by engineers for many years．A type of strain-measurement sensor was introduced in this paper,which is used successfully in static-dynamic testing for plenty of bridges, and it solved a series of problems encountered in strain-measuring for bridge static-dynamic testing，and improved the reliability of efficiency and measured value in field work． References | Related Articles | Metrics

Select

Fire alarm systems for highway tunnel HAN Zhi 2006, 25(2): 20-24.  Abstract ( )   PDF (211KB) ( )   The main reason applied improperly for highway tunnel fire alarm system is to be not known well for the equivement performance．By testing the three kinds of tire alarm system，it is is gotten that the alarm time is afected by flow speed，smoke density and so on，and presented the test method and how to select fier slarm system． References | Related Articles | Metrics

Select

Geostress measurement of Kaiser effect in Tongyu highway tunnel XU Lin-sheng 2006, 25(2): 25-27.  Abstract ( )   PDF (159KB) ( )   Through geostress measurement by Kaiser effect method，it is found out that the general space stress state of rockmass in deeply-lying and especially long Tongyu highway tunnel belongs to the potential strike-slip type.The measured geostresses in the middle part of the tunnel are generally very large with the σl major principal stress of 33．04 MPa．So during the construction process，the problems ofhigh geostress and roekburst have to be taken into account． References | Related Articles | Metrics

Select

Non-nodal connection of brick and beam elements in finite element analysis WANG Jia-Lin，CHEN Shan-lin，XIAO Sheng-xie 2006, 25(2): 28-30.  Abstract ( )   PDF (223KB) ( )   A method is presented for connecting three-dimensioral brick and beam elements．Based on the analysis of the displacement and rotation of an arbitrary point within a brick clement，a series of multipoint constraint equations are raised to reflect the proper connections of brick and beam elements．The multipoint constraint equations are realized by their introduction into the beam element analysis process and the replacement of the beam element's degrees of freedom with those of the brick element．This method suits a variety of connections between such two types of elements．A numerical example demonstrates the accuracy and feasibility of the method． References | Related Articles | Metrics

Select

Calculation of continuous bridge transverse load-distributing influence lines with plane finite bar elements XU Yi，GAo Fei 2006, 25(2): 31-34.  Abstract ( )   PDF (183KB) ( )   Based on analysis and generalization of the existent calculating methods of bridge transverse load-distributing influence lines and aiming at the thoughtfulness of article [3】which narrating the methods of Calculation of Bridge Transverse Load-distributing Influence Lines with Plane Finite Bar Elements,A new method is proposed in the paper with the continuous bridge transverse formation simulated as a usual plane finite bar element model in a computer software，and its rightness and convenience warranted in the given calculation examples． References | Related Articles | Metrics

Select

The derivation of relationship between J integral and K1 in view of the plane stress state ZHOU Hai-long 2006, 25(2): 35-37.  Abstract ( )   PDF (160KB) ( )   The author deduced the relationship between J Integral and Stress Intensity Factor K1 in view of the plane stress state in detail，which was based on the documentary [1】【2】's derivation of relationship between J Integral and Stress Intensity Factor K1 in view of the plane strain state．Therefore，this derivation was with important theory value and referred meaning． References | Related Articles | Metrics

Select

Analysis and numerical calculation for the length of approach slap based on the strengthened filling of the abutment DING Jing-sheng，WU Guo-xiong，WANG Wei-hua 2006, 25(2): 38-41.  Abstract ( )   PDF (271KB) ( )   Setting approach slap and paving geogirds are two primary measures to reduce the bridge head bump．The length of the approach slap should be shortened even be cancelled as enhancing the rebound module of the padding in the back of the abutment．According to the data of the ground module heightened by paving geogirds to deal with the bridge head bump in the freeway from Liangping to Changshou in Chongqing，This article analyses the relation among the ground module，the depth of abutment and the length of the approach slap，which can be referenced in the correct design an d construction of the approach slap by utilizing finiteelement program． References | Related Articles | Metrics

Select

Simulation and analysis of ultra-thin whitetopping panel faulting CUI Peng，LI Yu-zhi，ZHANG Li，SHAO La-geng 2006, 25(2): 42-45.  Abstract ( )   PDF (328KB) ( )   ANSYS Software is utilized in the structural analysis of the panel faulting in Ultra-thin Whitetopping pavement(UTW)． Different contact conditions were simulated with various dimensions in the model，which include the panels without faulting and those with faulting to diferent extents at three diferent locations．The locations are the edge along the longitudinal joint,the edge along the transversal joint,and the cornel The mechanical properties of the upper panels were also discussed，as well as the reason and the pattern of the pavement breakage．The analysis was verified through the field test observations．It was pointed out that measures should be taken during the course of design and construction，to provide a good bonding condition between UTW and the underlying asphalt layer and to avoid early failures of UTW pavement． References | Related Articles | Metrics

Select

The Temperature Measure and Control for Hydration Heat of Concrete JIANG Jia-mao，ZHOU Shui-xing 2006, 25(2): 46-48.  Abstract ( )   PDF (141KB) ( )