大跨度鋼斜拉橋施工精度控制目標(biāo)值的建議.pdf

大跨度鋼斜拉橋施工精度控制目標(biāo)值的建議

斜拉橋?yàn)閮?nèi)外高次超靜定結(jié)構(gòu), 在架設(shè)過程中其施工管理的復(fù)雜性是不言而喻的。
據(jù)文獻(xiàn)報(bào)道,
斜拉橋施工因產(chǎn)生較大誤差而影響結(jié)構(gòu)機(jī)能, 甚至垮橋事故, 已不鮮見; 另一方面, 因計(jì)算的假定、制造和組
裝的誤差, 施工荷載及位置的誤差, 索、塔、梁的誤差等因素的影響, 要想使斜拉橋在架設(shè)各階段的索力和主
梁線形與設(shè)計(jì)值相同, 幾乎是不可能的, 這就需要設(shè)定一個(gè)合理的施工管理精度目標(biāo)控制值。
本文概要介紹了
通常的斜拉橋施工管理方法, 并根據(jù)近年施工的大跨度鋼斜拉橋的施工實(shí)績(jī), 提出了鋼斜拉橋施工管理精度目
標(biāo)控制值的建議, 供今后大跨度鋼斜拉橋施工參考。

Cable for internal and external higher indeterminate structure, in the process of setting up the complexity of its construction management is self-evident. According to the literature,
Lead to considerable error because of cable-stayed bridge construction affect the structure function, or even the bridge collapse accident, has not uncommon; the other hand, due to calculation assumptions, manufacturing, and group
Installation error, construction and location of the error load, cable, tower, beam error and other factors, in order to bridge the various stages of erection and the main cable tension
Beam Alignment and design of the same value, is almost impossible, which requires construction management to set a reasonable target precision control value. This paper outlines
The usual method of bridge construction management and construction in recent years the construction of long-span steel cable-stayed bridge performance, made precision steel bridge construction project management
Control value of the proposed standard for future construction of long span steel cable-stayed bridge reference....