Analysis of Parameter Sensitivity in Construction Control of Inclined Pylon Cable-Stayed Bridge without Backstays

2011 ◽  
Vol 255-260 ◽  
pp. 851-855
Author(s):  
Qing Chen Zhang ◽  
Quan Sheng Sun
Keyword(s):  
Parameter Sensitivity ◽  
Construction Control ◽  
Construction Technology ◽  
Bridge Structure ◽  
Construction Process ◽  
Bridge Construction ◽  
Cable Stayed Bridge ◽  
Sensitive Parameters ◽  
Affect State

Parameter changes of a bridge in construction process must have an effect on its stress and alignment.And different parameters ,in the same bridge ,affect state of bridge to a different degree. While we have no need to consider every parameter in practical construction process, just paying attention to some sensitive parameters with a great effect on bridge structure instead .So a reseach of parameter sensibility of bridge construction is necessary to find out sensitive ones of all to limit their great effect .In this paper, based on JinZhou cable-stayed bridge without backstays,we use Midas civil to analyze the degree of impact of each parameter on stress and alignment of main girde ,which is depended on to put forward the main sensitive parameters of the bridge in construction process and a few of advice about its construction technology.

Construction Control Technology of Cable Hoisting System for the Arch Rib of Steel Box Bridge

2014 ◽  
Vol 919-921 ◽  
pp. 1403-1406
Author(s):  
Yu Wang ◽  
Yan Hong Wei ◽  
Gui Fen Hu
Keyword(s):  
Simulation Analysis ◽  
Steel Structures ◽  
Narrow Channel ◽  
Construction Control ◽  
Construction Technology ◽  
Bridge Construction ◽  
Welded Steel ◽  
Geological Conditions ◽  
Stress And Deformation ◽  
Hoisting System

Mingzhou bridge in Ningbo is a half-through steel box arch bridge with 450m main-span. The bridge adopts welded steel structures except that abutments are made of steel composite structure. High requirements for the bridge construction technology are put forward because of the restrictions including poor geological conditions for bridge site, height limit for aircraft, narrow channel, frequent typhoon. The mid-span arch rib adopts cable hoisting and stayed buckle cable technology for the construction. This paper introduces the construction method during the assembled process of the mid-span arch rib. The numerical simulation analysis for the construction process is carried out. Stress and deformation of the main arch are in a reasonable range, which indicates completing the bridge construction control target successfully.

Asymmetric Construction Technology of Partially Cable-Stayed Bridge with Single Tower and Single Cable Plane

2011 ◽  
Vol 255-260 ◽  
pp. 881-885
Author(s):  
Xiao Meng Sun ◽  
Zi Cai Yan ◽  
Da Yong Zhu ◽  
Hui Chen
Keyword(s):  
Structural Characteristics ◽  
Construction Method ◽  
Construction Technology ◽  
Bridge Construction ◽  
Cable Stayed Bridge ◽  
Surrounding Environment ◽  
Technical Features ◽  
Main Girder

According to the structural characteristics and the surrounding environment of partially cable-stayed bridge, an asymmetric construction method combinded with support cast-in-place and cantilever casting is applied for main girder construction, based on project of Yuyao cable-stayed bridge. Its basic idea is as follows: One deck section is concreted with brackets in advance, which to offer counterweight for basket construction symmetrically. The technical features and construction key point are described in detail, which provides reference for similar bridge construction.

Simulation Analysis on Construction Control of Low Tower Cable-Stayed Bridge

2013 ◽  
Vol 438-439 ◽  
pp. 879-882
Author(s):  
Zhu Lin Yang ◽  
Hui Zhao ◽  
Shi Ming Liu
Keyword(s):  
Simulation Analysis ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Construction Control ◽  
Construction Process ◽  
Design Code ◽  
Cable Stayed Bridge ◽  
Safety And Reliability ◽  
Calculation Results ◽  
Related Design

To ensure the construction quality, safety and reliability, according the design drawings, construction process and the related design code, this paper establishes the simulation model by the software of MIDAS/CIVIL for the analysis of construction control of the low tower cable-stayed bridge. The calculation results showed that the maximum cumulative horizontal displacement of the tower and vertical displacement of the beam is 13.8mm and 154mm respectively, which can be adjusted by setting camber. At completion state of the cable-stayed bridge, the stresses of the tower and the beam are both in compressive with the maximum of 14.47MPa and 14.03MPa respectively, which are both less than the limits of corresponding materials. The bridge is safe and reliable.

Research on Detail-Structure Construction Technology of Outside Heat Preservation of Exterior Walls

2014 ◽  
Vol 548-549 ◽  
pp. 1790-1794
Author(s):  
Xia Zhao ◽  
You Ping Ding ◽  
Xiu Yan Zhang
Keyword(s):  
Construction Technology ◽  
Air Conditioner ◽  
Construction Process ◽  
External Wall ◽  
Similar Construction ◽  
Preservation Technology ◽  
Structure Treatment ◽  
Heat Preservation

In order to analyze the effect of heat preservation, the heat preservation technology of detail structure, such as decorative lines of external walls, edge beam and edge column, windows, balcony and laying position of air conditioner, have been well treated under the system of thin plastered external wall based on EPS. Moreover, the technical-economy benefits of detail structure treatments have been analyzed by comparing with those without detail structure treatment. The results show that better heat preservation and economy benefits would be created by detail structure treatment, which could provide good reference for similar construction process.

Bridge bearing solutions that facilitate quick and efficient bearing installation and bridge construction

2019 ◽  
Author(s):  
Simon Hoffmann ◽  
Amit Kutumbale ◽  
Danilo Della Ca'
Keyword(s):  
Load Distribution ◽  
Construction Method ◽  
Construction Process ◽  
Vital Function ◽  
Bridge Construction ◽  
Construction Methods ◽  
Efficient Construction ◽  
Critical Components ◽  
Bridge Bearing ◽  
Segmental Bridge

<p>A bridge’s bearings, arguably its most critical components, perform a vital function throughout the bridge’s service life, but the bearings used can also have a significant impact on the bridge construction process. Suitably designed adjustable bearings are an integral part of the incremental launch method of bridge construction, for instance, which can be a very efficient construction method. Adjustable bearings may also support other bridge construction methods, such as segmental bridge construction, where fixities/freedoms that applied during the construction phase require to be changed before the bridge enters service. Lifting bearings, the height of which can be increased, may enable a lack of precision in the structure to be tolerated, and measuring bearings may enable load distribution during bridge construction to be verified, where this is required by the construction method. Design features of otherwise standard bearings that support quick and high-quality installation can also contribute towards the efficiency of the overall bridge construction process, as can the use of bearing designs which minimize bearing size. Bearing solutions and features that facilitate bearing installation and bridge construction in ways such as these are described.</p>

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.

scholarly journals Research on Reliability of Straight Thread Connection of Reinforcement Cage of Bridge Foundation

2021 ◽  
Vol 248 ◽  
pp. 03064
Author(s):  
Jinhui Li ◽  
Xiaodong Shang ◽  
Minmin Yuan
Keyword(s):  
New Technologies ◽  
Practical Significance ◽  
Construction Technology ◽  
Bridge Construction ◽  
Thread Connection ◽  
Development Status ◽  
Steel Bar ◽  
Foreign Countries ◽  
Application Requirements ◽  
Bridge Foundation

With the continuous improvement of bridge construction technology in our country, although the service life of the bridge has been greatly extended, the mechanical connection technology of steel bar in the technology is still in the stage of steel bar straight thread connection, which is nearly 30 years behind that of foreign countries. According to the development status and application requirements of bridge construction in China, it is of great practical significance to explore new technologies and methods to solve the problem of insufficient strength of straight thread connection of reinforcement. In this paper, the reliability of the straight thread reinforcement connection in the bridge foundation reinforcement cage connection technology is studied as the main breakthrough point, and the main problems encountered in the application of the straight thread reinforcement connection technology in the bridge reinforcement cage connection are analyzed.

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