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Optimization Analysis of Hanger Tensioning Process on Self-anchored Suspension Bridges

Author: XingZhi
Tutor: LiangPeng
School: Chang'an University
Course: Bridge and Tunnel Engineering
Keywords: Self-anchored suspension System Conversion Sling tension Optimization Catenary cable element
CLC: U448.25
Type: Master's thesis
Year: 2009
Downloads: 162
Quote: 5
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Abstract


Over the past decade, China's self-anchored suspension in a rapid stage of development and prosperity, because of its beautiful shape structure, topographic and geologic adaptable and better economic performance, rapid application and promotion. Sling tension to achieve the main beam dead weight from the cradle to the cable system is key to the process of self-anchored suspension bridge links, how exhausted less repeated the number of tension sling tension to achieve the design of the state of the full-bridge suspender tension a need to study the process of sling tension become the focus and difficulty of the self-anchored suspension bridge. Conversion key issues, self-anchored suspension bridge construction system - tension slings of the main beam from the bracket complex non-linear process, consider the structure of the carrying capacity and tensioning equipment capacity constraints, the self-anchored suspension hanging The cable tensioning process analysis. A concrete self-anchored suspension combined with the characteristics of its structure and force, combined with the impact of the non-linear factors referenced spatial resolution of the numerical method, the principle of self-anchored suspension bridge process control factors in accordance with the same components unstressed length (expected length of the main cable shape as well as the main cable and sling without stress) is calculated using finite element software to verify the reliability of the numerical algorithms, in order to determine the reasonable finished dead state of a concrete self-anchored suspension bridge, in order to The sling tension process to provide the necessary foundation. A deep understanding of the variation of the the sling tension during the displacement of the main cable, and slings force on Construction Control of great significance. Analysis by finite element modeling, comparative analysis reveals the main cable displacement variation: the displacement of tension on the tension displacement has \having a strong coherent \Comprehensive comparison of domestic and foreign self-anchored suspension sling tension construction methods based on the use of finite element software to calculate and analyze construction of a self-anchored suspension sling tension proposed the method to determine the sling tension programs and the use of this method were obtained up to 4 jacks and a maximum of eight jacks tension program, and the program design proposed by the original tension program were analyzed, and verified the proposed scheme reasonable . Most of the literature, several rounds of repeated tension method compared sling tensioning scheme proposed in this paper most slings simply tension once, thus effectively reducing the repeated number of tension, improve slings Zhang pull efficiency.

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CLC: > Transportation > Road transport > Bridges and Culverts > All kinds of bridges > Bridge: Structure > Suspension Bridge
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