A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Large-span arch bridge pre-descending construction technology
The invention provides a large-span arch bridge pre-descending construction process which comprises the following steps: S1) transverse limiting: constructing on the outer side of a main beam to form transverse limiting; (S2) lifting systems are arranged, specifically, the lifting systems are symmetrically arranged on the side piers, the lifting systems work at the same time, and a main beam is arranged above the lifting systems; (S3) the main beam is lifted, specifically, a lifting system is controlled, so that the main beam is driven to be lifted, and then a disengaging structure is formed between the main beam and the abutment pier; s4) adjusting the bearing beam: dividing the bearing beam into a plurality of sections according to the descending stroke in the pre-descending process of the main beam, and adjusting the bearing beam to form a descending space between the main beam and the bearing beam; s5) pre-descending of the main beam: pre-descending the main beam into the set pre-descending space by utilizing the descending space according to the set descending stroke; and S6) repeating the step S3) to the step S5) until the main beam is lifted or dropped to a design position step by step. The process is easy to operate, efficient in construction and high in construction safety.
本发明提供了一种大跨度拱桥预降施工工艺，包括以下步骤，S1)横向限位：于所述主梁外侧，施工形成横向限位；S2)升降系统的设置：于边墩上，对称设置升降系统，所述升降系统同时工作，且所述升降系统上方设有主梁；S3)主梁的起升：控制升降系统，使得主梁被带动起升，进而使得主梁与边墩之间形成脱空结构；S4)垫梁的调整：根据主梁预降中的降落行程，将其分为若干段，调整垫梁，使其在主梁和垫梁之间形成降落空间；S5)主梁的预降：根据设定的降落行程，利用降落空间使得主梁预降至设定的预降空间内；S6)重复步骤S3)至步骤S5)，直至逐级将主梁升降或下落到设计位置。本发明的工艺操作简单，施工高效，施工安全性较高。
Large-span arch bridge pre-descending construction technology
The invention provides a large-span arch bridge pre-descending construction process which comprises the following steps: S1) transverse limiting: constructing on the outer side of a main beam to form transverse limiting; (S2) lifting systems are arranged, specifically, the lifting systems are symmetrically arranged on the side piers, the lifting systems work at the same time, and a main beam is arranged above the lifting systems; (S3) the main beam is lifted, specifically, a lifting system is controlled, so that the main beam is driven to be lifted, and then a disengaging structure is formed between the main beam and the abutment pier; s4) adjusting the bearing beam: dividing the bearing beam into a plurality of sections according to the descending stroke in the pre-descending process of the main beam, and adjusting the bearing beam to form a descending space between the main beam and the bearing beam; s5) pre-descending of the main beam: pre-descending the main beam into the set pre-descending space by utilizing the descending space according to the set descending stroke; and S6) repeating the step S3) to the step S5) until the main beam is lifted or dropped to a design position step by step. The process is easy to operate, efficient in construction and high in construction safety.
本发明提供了一种大跨度拱桥预降施工工艺，包括以下步骤，S1)横向限位：于所述主梁外侧，施工形成横向限位；S2)升降系统的设置：于边墩上，对称设置升降系统，所述升降系统同时工作，且所述升降系统上方设有主梁；S3)主梁的起升：控制升降系统，使得主梁被带动起升，进而使得主梁与边墩之间形成脱空结构；S4)垫梁的调整：根据主梁预降中的降落行程，将其分为若干段，调整垫梁，使其在主梁和垫梁之间形成降落空间；S5)主梁的预降：根据设定的降落行程，利用降落空间使得主梁预降至设定的预降空间内；S6)重复步骤S3)至步骤S5)，直至逐级将主梁升降或下落到设计位置。本发明的工艺操作简单，施工高效，施工安全性较高。
Large-span arch bridge pre-descending construction technology
一种大跨度拱桥预降施工工艺
LI YEXUN (author) / LYU LINTONG (author) / ZUO XIAOYONG (author) / HUO ZHENDONG (author) / LI LONG (author) / LIU XIAOGANG (author) / DENG WENBIN (author) / LI ZHEN (author)
2023-03-21
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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