Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for ground cable hanging and aerial butt joint of ultra-large-span prestressed pipe truss
The invention discloses a construction method for ground cable hanging and aerial butt joint of an ultra-large-span prestressed pipe truss. The construction method is characterized in that the ultra-large-span prestressed pipe truss is divided into three sections A, B and C according to the characteristics of the ultra-large-span prestressed pipe truss structure, each section is assembled on the ground through a jig frame, and after the procedures of jig separation, transportation, overturning, hoisting and the like, the sections A and C are hoisted to a designed position at first; the sectionB is divided into a subsection B1 and a subjection B2 and spliced on the ground through a jig frame, after jig separation, the subsections B1 and B2 are sequentially hoisted to a ground support framefor aerial butt joint, a prestressed steel inhaul cable is hung, and the steel inhaul cable is primary tensioned according to a simulation checking result; and after primary tensioning, the section Bis hoisted to the designed position through two machines to be in aerial butt joint with the section A and the section C, after butt joint is finished, a connecting truss is installed, the steel inhaul cable is finally tensioned according to the simulation checking result, and the ultra-large-span prestressed pipe truss is installed. The construction method highlights the characteristics of highconstruction speed, low cost, low safety risk, high construction quality and the like in the operation process.
一种超大跨度预应力管桁架地面挂索空中对接的施工方法，其特征是根据超大跨度预应力管桁架结构的自身特点，将其分为A、B、C三段，每段均在地面胎架组装，然后经过脱胎、运输、翻身、吊装等程序，先将A、C段吊装至设计位置。B段分B1、B2两段地面胎架拼装，脱胎后，先后吊装至地面支撑架空中对接，然后挂预应力钢拉索，并根据仿真验算结果对钢拉索初步张拉。初步张拉后，双机将B段吊装至设计位置与A、C段空中对接，对接完成后，安装联系桁架，最后再按照仿真验算结果将拉索进行终拉，该榀桁架安装完成。本施工方法突显了作业过程施工速度快，费用低，安全风险低，施工质量高等特点。
Construction method for ground cable hanging and aerial butt joint of ultra-large-span prestressed pipe truss
The invention discloses a construction method for ground cable hanging and aerial butt joint of an ultra-large-span prestressed pipe truss. The construction method is characterized in that the ultra-large-span prestressed pipe truss is divided into three sections A, B and C according to the characteristics of the ultra-large-span prestressed pipe truss structure, each section is assembled on the ground through a jig frame, and after the procedures of jig separation, transportation, overturning, hoisting and the like, the sections A and C are hoisted to a designed position at first; the sectionB is divided into a subsection B1 and a subjection B2 and spliced on the ground through a jig frame, after jig separation, the subsections B1 and B2 are sequentially hoisted to a ground support framefor aerial butt joint, a prestressed steel inhaul cable is hung, and the steel inhaul cable is primary tensioned according to a simulation checking result; and after primary tensioning, the section Bis hoisted to the designed position through two machines to be in aerial butt joint with the section A and the section C, after butt joint is finished, a connecting truss is installed, the steel inhaul cable is finally tensioned according to the simulation checking result, and the ultra-large-span prestressed pipe truss is installed. The construction method highlights the characteristics of highconstruction speed, low cost, low safety risk, high construction quality and the like in the operation process.
一种超大跨度预应力管桁架地面挂索空中对接的施工方法，其特征是根据超大跨度预应力管桁架结构的自身特点，将其分为A、B、C三段，每段均在地面胎架组装，然后经过脱胎、运输、翻身、吊装等程序，先将A、C段吊装至设计位置。B段分B1、B2两段地面胎架拼装，脱胎后，先后吊装至地面支撑架空中对接，然后挂预应力钢拉索，并根据仿真验算结果对钢拉索初步张拉。初步张拉后，双机将B段吊装至设计位置与A、C段空中对接，对接完成后，安装联系桁架，最后再按照仿真验算结果将拉索进行终拉，该榀桁架安装完成。本施工方法突显了作业过程施工速度快，费用低，安全风险低，施工质量高等特点。
Construction method for ground cable hanging and aerial butt joint of ultra-large-span prestressed pipe truss
超大跨度预应力管桁架地面挂索空中对接的施工方法
ZHANG XINHUA (Autor:in) / LI LIWU (Autor:in) / HUANG JINBIAO (Autor:in) / WANG GUOBING (Autor:in) / GUO SHUANJUN (Autor:in) / HOU XIANJU (Autor:in) / TAN XINGCHEN (Autor:in) / LI KANG (Autor:in) / LI PENG (Autor:in)
21.04.2020
Patent
Elektronische Ressource
Chinesisch
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