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A platform for research: civil engineering, architecture and urbanism
Cable-stayed bridge concrete beam combined hanging basket construction method
The invention discloses a cable-stayed bridge concrete beam combined hanging basket construction method. Stay cable construction is divided into two times of tensioning, the two times of tensioning are conducted after segment pouring and hanging basket walking respectively, the internal force influence on new concrete and old concrete due to different working conditions is reduced, cross operationis reduced, and effective control over the line shape of a finished bridge is enhanced; due to the fact that a small cross beam is arranged between two box chambers of a main beam, when a hanging basket moves forwards after concrete pouring is completed, due to blocking of the cross beam, a hanging basket bottom die system needs to be lowered firstly. Therefore, small wood molds convenient to mount and demount should be adopted for the cross beam portion plate, the demounted formwork and the demounted support are flatly laid on the hanging basket bottom mold, the lowering height of the hanging basket hanging system is reduced, lowering time is saved, and the underbridge navigation clearance requirement can be met. The method is applied to the field of bridge hanging basket construction.
本发明公开了一种斜拉桥混凝土梁组合式挂篮施工方法，斜拉索施工分两次张拉，分别在节段浇筑后及挂篮走行后进行，减少因不同工况对新旧混凝土间的内力影响，减少交叉作业，加强对成桥线形的有效控制；由于主梁两箱室中间为小横梁，混凝土浇筑完成后挂篮前移时，由于横梁的阻隔，需将挂篮底模系统先进行下放操作。因此横梁部位板应采用便于安拆的小块木模，使拆除后的模板及支架平铺于挂篮底模上，以减小挂篮吊挂系统下放高度，节省下放时间，且能保证桥下通航净空要求。此发明用于桥梁挂篮施工领域。
Cable-stayed bridge concrete beam combined hanging basket construction method
The invention discloses a cable-stayed bridge concrete beam combined hanging basket construction method. Stay cable construction is divided into two times of tensioning, the two times of tensioning are conducted after segment pouring and hanging basket walking respectively, the internal force influence on new concrete and old concrete due to different working conditions is reduced, cross operationis reduced, and effective control over the line shape of a finished bridge is enhanced; due to the fact that a small cross beam is arranged between two box chambers of a main beam, when a hanging basket moves forwards after concrete pouring is completed, due to blocking of the cross beam, a hanging basket bottom die system needs to be lowered firstly. Therefore, small wood molds convenient to mount and demount should be adopted for the cross beam portion plate, the demounted formwork and the demounted support are flatly laid on the hanging basket bottom mold, the lowering height of the hanging basket hanging system is reduced, lowering time is saved, and the underbridge navigation clearance requirement can be met. The method is applied to the field of bridge hanging basket construction.
本发明公开了一种斜拉桥混凝土梁组合式挂篮施工方法，斜拉索施工分两次张拉，分别在节段浇筑后及挂篮走行后进行，减少因不同工况对新旧混凝土间的内力影响，减少交叉作业，加强对成桥线形的有效控制；由于主梁两箱室中间为小横梁，混凝土浇筑完成后挂篮前移时，由于横梁的阻隔，需将挂篮底模系统先进行下放操作。因此横梁部位板应采用便于安拆的小块木模，使拆除后的模板及支架平铺于挂篮底模上，以减小挂篮吊挂系统下放高度，节省下放时间，且能保证桥下通航净空要求。此发明用于桥梁挂篮施工领域。
Cable-stayed bridge concrete beam combined hanging basket construction method
一种斜拉桥混凝土梁组合式挂篮施工方法
ZHOU WEN (author) / FENG CHAOJUN (author) / LIAO YUNZHAO (author) / HE ZELIN (author) / ZHANG QIQIAO (author) / SU SHENGCHUN (author) / XU PENGXIANG (author) / GUO JUNYA (author) / FAN WEI (author) / MA CHAO (author)
2020-04-21
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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