Calculation of Cable Force and Pre-Camber for Long-Span Rib Arch Bridge Construction by Unstressed State Control Method

ICTE 2011 ◽  
2011 ◽  
Author(s):  
Weifeng Tian ◽  
Liangliang Zhang ◽  
Thabit Saeed Ayad
Keyword(s):  
Control Method ◽  
State Control ◽  
Bridge Construction ◽  
Arch Bridge ◽  
Long Span ◽  
Unstressed State ◽  
Cable Force

Calculation of Cable Force for Long-Span Rib Arch Bridge Construction under Seasonal Ambient Temperature

2011 ◽  
Vol 378-379 ◽  
pp. 341-344
Author(s):  
Wei Feng Tian ◽  
Shui Xing Zhou ◽  
Ayad Thabet Saeed Alghabsha
Keyword(s):  
Ambient Temperature ◽  
Control Method ◽  
Difficult Problem ◽  
State Control ◽  
Optimization Analysis ◽  
Arch Bridge ◽  
Long Span ◽  
Unstressed State ◽  
Cable Force ◽  
Cable Forces

Calculation of cable force under seasonal ambient temperature is the key and difficult problem in the construction of long-span rib arch bridge. It affects the final cable forces and deformations of arch rib after arch closure. Unstressed state control method is introduced in the construction of Daning River Bridge; unstressed qualities of ribs and unstressed length of cables can be obtained by optimization analysis of the maximum cantilever state in construction. According to unstressed state control method, the cable forces of each segment were calculated using the forward-iteration method. These results offer the basis for construction control, and guarantee the arch rib line and cable forces to meet the design requirements, and an arch closure with high precision.

Analyze on Construction Status Long-Span Arch Rib Bridge by Numerical Simulation

2011 ◽  
Vol 480-481 ◽  
pp. 1318-1323
Author(s):  
Jiang Hao
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Construction Method ◽  
Bridge Construction ◽  
Actual Measurement ◽  
Arch Bridge ◽  
Long Span ◽  
Cable Force ◽  
Element Method

Non-cable hoisting frame is a construction method of the main arch ribs of big span bridge. The key issue in the numerical simulation of this type of bridge construction is geometric nonlinearity approach. Construction method of long-span bridge rib and stage-by-stage construction method of a arch bridge was simulated by finite element method. The geometric description was attained comparison with simulation results and the actual measurement of cable force. The results show that finite element method is effectively used in the simulation of long span arch bridge construction.

Construction Monitoring Technology Research on Large-Span V Structure Tied Arch Bridge

2013 ◽  
Vol 351-352 ◽  
pp. 1240-1243 ◽  
Author(s):  
Ting Yin ◽  
Wei Zhang ◽  
Yan Bo Zhao ◽  
Xiao Long Sun
Keyword(s):  
Actual State ◽  
Construction Process ◽  
Bridge Construction ◽  
Monitoring Point ◽  
Monitoring Technology ◽  
Construction Monitoring ◽  
Arch Bridge ◽  
Large Span ◽  
Long Span ◽  
Tied Arch Bridge

Large-span V structure tied arch bridge structure system is complex. In order to make the actual state of the bridge into the ideal state of maximum close to the design, we must make real-time monitoring in the key parts of the structure, and adjust to the design of the data by analysis calculated, to ensure the safety and reliability of arch bridge in the course of construction and into stress after the completed bridge. Combined with the construction monitoring of the main Xinglong Bridge on Si River, this paper introduces the main bridge construction process measurement a preliminary study on the large span V configuration basket tied arch bridge construction monitoring technology. Based on the construction monitoring of Xinglong Bridge on Si River, this paper introduces the main contents and methods of monitoring point location, monitoring control of construction process, and discussed the construction monitoring technology of long-span X-style tied arch bridge V structure.

Control Method on Main Girder Configuration of Self-Anchored Suspension Bridges Based on Long Segment Hoisting Method

2011 ◽  
Vol 243-249 ◽  
pp. 1540-1548
Author(s):  
Yu Zhao ◽  
Jia Le Wei ◽  
Shuan Hai He
Keyword(s):  
Control Method ◽  
Suspension Bridge ◽  
Internal Force ◽  
Suspension Bridges ◽  
Construction Technique ◽  
Method Of Calculation ◽  
Main Cable ◽  
Unstressed State ◽  
Cable Force ◽  
And Control

Based on the object of self-anchored suspension bridge constructed with long segment hoist method, the load-carrying characteristics and construction technique which is different from other self-anchored suspension bridge is analyzed, and the method of calculation and control on steel box girder configuration during the construction course of long segment hoisted are proposed. For different calculation methods of girder configuration lifting, the influences of the three manners of pre-cambering for steel girders on the configuration and internal force of finished bridge are analyzed. The results show that inverse erection— forward erection—unstressed state synthetic method can guarantee the minimum deviation of steel girder configuration of finished bridge with the design, and it is not necessary to adjust the suspension cable force, and there is no change in main cable configuration and internal force.

Reasonable Elevation Calculation of Temporary Pier of Long-Span Steel Trussed Arch Bridges with Semi-Cantilever

2014 ◽  
Vol 501-504 ◽  
pp. 1318-1322
Author(s):  
Xu Luo ◽  
Lu Rong Cai
Keyword(s):  
Significant Influence ◽  
Construction Method ◽  
Bridge Construction ◽  
Arch Bridge ◽  
Long Span ◽  
Building Process ◽  
Steel Truss ◽  
Arch Bridges ◽  
Beam Bridge

When the scaffold construction method is applied on long-span steel trussed arch bridges, reasonable setting of the temporary pier elevation has significant influence on assembly linearis and safety assembly of long-span steel trussed arch bridges with semi-cantilever. In this paper, in accordance with the manufacturing linearis steel trussed beam bridge and steel truss beam linearis changing during building process, the calculation of temporary pier elevation was studied systematically, and practical function was deduced. Then, the method was applied to a long-span steel trussed arch bridge. The obtained result by in-situ assembly and dismantling presents that: 50 mm preserved method is considered in this paper, which can provide convenience for removing the temporary pier. At the same time, the rationality and reliability of the presented approach are verified. It also can provide reference for similar bridge construction.

Steel Box Girder - Steel Tube Arch Bridge Fall-Girder System Conversion Technology Construction Control Research

2014 ◽  
Vol 501-504 ◽  
pp. 1390-1397
Author(s):  
Kai Zhong Xie ◽  
Feng Fan ◽  
Xian Zhi Huang
Keyword(s):  
Optimal Control ◽  
Control Method ◽  
Steel Tube ◽  
System Transformation ◽  
Bridge Construction ◽  
Monitoring Method ◽  
Box Girder ◽  
Arch Bridge ◽  
Steel Box Girder ◽  
And Control

In order to make steel box girder - steel tube arch bridge into the bridge state more reasonable, this paper studies the construction monitoring method regarding the fall girder method adopted to conduct system transformation. Using optimal control theory to determine the fall girder method girder jack-up height, control the line shape and stress of arch and girder and derrick force, and control the Vietnam Da Nang Dragon Bridge construction process. Studies have shown that fall girder method to conduct the system conversion can meet the design requirements, and optimal control method in fall girder method system conversion can obtain good effects. Fall girder method and optimization control method is worth extending to the similar bridge construction and control.

Long-span Steel Truss Arch Bridge Construction and Innovation

2015 ◽  
Vol 105 (2) ◽  
pp. 1-7
Author(s):  
Dan Liu ◽  
Wei Tian ◽  
Jianxin Zheng
Keyword(s):  
Bridge Construction ◽  
Arch Bridge ◽  
Long Span ◽  
Steel Truss
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