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A platform for research: civil engineering, architecture and urbanism
Construction method for erecting and installing large-span steel truss girder in segmented and fragmented mode
The invention relates to the field of large-span steel truss girder construction, in particular to a large-span steel truss girder segmented and fragmented erection and installation construction method, which comprises the following steps of: dividing a steel truss girder into segments according to the structure, the size and the field limiting conditions of the steel truss girder, specifically dividing the steel truss girder into a segment A and a segment B, manufacturing and pre-assembling; pre-assembled components are transported to the site, formal assembly is conducted on an assembling platform built on the site, and meanwhile a temporary steel structure support is built between the main bridge and the approach bridge; starting to erect and install the steel trusses, namely installing a bridge girder erection machine and moving forwards through holes, enabling front supporting legs to fall onto a temporary steel structure support, sequentially erecting a left section A steel truss and a right section A steel truss, and after the left section A steel truss and the right section A steel truss are in place; a secondary through hole of the bridge girder erection machine moves forwards, a front supporting leg falls to a main bridge cover beam, a middle supporting leg falls to a temporary support, and a B truss girder left piece and a B truss girder right piece are erected in sequence; and after the section A and the section B of the steel truss girder are in place, a jack is arranged on the temporary support to adjust the line type of the main girder, and two sections of truss girders are welded after the line type of the main girder meets the requirement.
本发明涉及大跨度钢桁梁施工领域，涉及一种大跨度钢桁梁分段分片架设安装施工工法，根据钢桁梁结构、尺寸和现场限制条件，将钢桁梁进行分节段划分，具体分为A，B两段、制造和预拼装；将预拼装好的构件运输至现场，在现场搭建好的拼装平台上进行正式组装，同时，在主桥与引桥之间搭设临时钢构支架；开始架设安装钢桁梁，步骤为：安装架桥机并过孔前移，前支腿落至临时钢构支架上，依次进行左片A右片A段钢桁梁架设，待A段左右两片钢桁梁就位后；架桥机二次过孔前移，前支腿落至主桥盖梁处，中支腿落至临时支架处，依次架设B桁梁左右片；待A和B段钢桁梁就位后，在临时支架上设置千斤顶调整主梁线型，主梁线性满足要求后焊接两节段桁梁。
Construction method for erecting and installing large-span steel truss girder in segmented and fragmented mode
The invention relates to the field of large-span steel truss girder construction, in particular to a large-span steel truss girder segmented and fragmented erection and installation construction method, which comprises the following steps of: dividing a steel truss girder into segments according to the structure, the size and the field limiting conditions of the steel truss girder, specifically dividing the steel truss girder into a segment A and a segment B, manufacturing and pre-assembling; pre-assembled components are transported to the site, formal assembly is conducted on an assembling platform built on the site, and meanwhile a temporary steel structure support is built between the main bridge and the approach bridge; starting to erect and install the steel trusses, namely installing a bridge girder erection machine and moving forwards through holes, enabling front supporting legs to fall onto a temporary steel structure support, sequentially erecting a left section A steel truss and a right section A steel truss, and after the left section A steel truss and the right section A steel truss are in place; a secondary through hole of the bridge girder erection machine moves forwards, a front supporting leg falls to a main bridge cover beam, a middle supporting leg falls to a temporary support, and a B truss girder left piece and a B truss girder right piece are erected in sequence; and after the section A and the section B of the steel truss girder are in place, a jack is arranged on the temporary support to adjust the line type of the main girder, and two sections of truss girders are welded after the line type of the main girder meets the requirement.
本发明涉及大跨度钢桁梁施工领域，涉及一种大跨度钢桁梁分段分片架设安装施工工法，根据钢桁梁结构、尺寸和现场限制条件，将钢桁梁进行分节段划分，具体分为A，B两段、制造和预拼装；将预拼装好的构件运输至现场，在现场搭建好的拼装平台上进行正式组装，同时，在主桥与引桥之间搭设临时钢构支架；开始架设安装钢桁梁，步骤为：安装架桥机并过孔前移，前支腿落至临时钢构支架上，依次进行左片A右片A段钢桁梁架设，待A段左右两片钢桁梁就位后；架桥机二次过孔前移，前支腿落至主桥盖梁处，中支腿落至临时支架处，依次架设B桁梁左右片；待A和B段钢桁梁就位后，在临时支架上设置千斤顶调整主梁线型，主梁线性满足要求后焊接两节段桁梁。
Construction method for erecting and installing large-span steel truss girder in segmented and fragmented mode
一种大跨度钢桁梁分段分片架设安装施工工法
YANG LIMING (author) / CHENG JINGANG (author) / KE ZHENGXIONG (author) / KANG JIAN (author) / JIANG GUOPENG (author) / WANG SHUMING (author) / YANG AIBING (author) / WANG WEI (author) / YUE YANG (author)
2024-11-19
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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