A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Novel pushing method for erecting steel box girder
The invention discloses a novel pushing method for erecting a steel box girder, which comprises the following steps of: S1, respectively mounting temporary piers on two sides of a main tower pier to serve as a pushing assembly bracket, and distributing and mounting at least one auxiliary temporary pier between the main tower pier and a permanent pier; s2, sliding construction of the steel box girder segments is carried out; s3, carrying out walking type incremental launching construction on the steel box girder; s4, pier passing construction of the steel box girder is conducted; s5, continuing to splice and push the sections of the steel box girder until the front end of the steel box girder reaches the position above the permanent pier at the final design position; and S6, steel box girder falling construction is carried out. The reasonable steel box girder pier passing construction method is adopted, guide-beam-free pushing pier passing is achieved, it is avoided that the construction period occupied by mounting and dismounting of a guide beam is long, and the overall bridging cost can be reduced; the temporary supporting cushion blocks and the beam falling cushion blocks are extracted step by step, beam falling construction of the whole steel box beam is achieved, a large amount of internal stress accumulated at part of the section of the steel box beam can be effectively reduced or eliminated, and follow-up bridge system conversion is facilitated.
本发明公开了一种用于钢箱梁架设的新型顶推方法，包括如下步骤：S1、在主塔墩两侧分别安装设置临时墩，作为顶推拼装支架，在主塔墩与永久墩之间分布安装至少一个辅助临时墩；S2、钢箱梁节段滑移施工；S3、钢箱梁步履式顶推施工；S4、钢箱梁过墩施工；S5、继续进行钢箱梁节段的拼装、顶推，直至钢箱梁前端到达最后设计位置的永久墩上方；S6、钢箱梁落梁施工。本发明采用合理的钢箱梁过墩施工方法，实现无导梁顶推过墩，避免了导梁的安装和拆除占用较长的工期，可降低整体的架桥成本；通过逐步抽取临时支撑垫块与落梁垫块，实现整个钢箱梁的落梁施工，可有效降低或消除钢箱梁节段部分位置积聚的大量内部应力，便于后续的桥梁体系转换。
Novel pushing method for erecting steel box girder
The invention discloses a novel pushing method for erecting a steel box girder, which comprises the following steps of: S1, respectively mounting temporary piers on two sides of a main tower pier to serve as a pushing assembly bracket, and distributing and mounting at least one auxiliary temporary pier between the main tower pier and a permanent pier; s2, sliding construction of the steel box girder segments is carried out; s3, carrying out walking type incremental launching construction on the steel box girder; s4, pier passing construction of the steel box girder is conducted; s5, continuing to splice and push the sections of the steel box girder until the front end of the steel box girder reaches the position above the permanent pier at the final design position; and S6, steel box girder falling construction is carried out. The reasonable steel box girder pier passing construction method is adopted, guide-beam-free pushing pier passing is achieved, it is avoided that the construction period occupied by mounting and dismounting of a guide beam is long, and the overall bridging cost can be reduced; the temporary supporting cushion blocks and the beam falling cushion blocks are extracted step by step, beam falling construction of the whole steel box beam is achieved, a large amount of internal stress accumulated at part of the section of the steel box beam can be effectively reduced or eliminated, and follow-up bridge system conversion is facilitated.
本发明公开了一种用于钢箱梁架设的新型顶推方法，包括如下步骤：S1、在主塔墩两侧分别安装设置临时墩，作为顶推拼装支架，在主塔墩与永久墩之间分布安装至少一个辅助临时墩；S2、钢箱梁节段滑移施工；S3、钢箱梁步履式顶推施工；S4、钢箱梁过墩施工；S5、继续进行钢箱梁节段的拼装、顶推，直至钢箱梁前端到达最后设计位置的永久墩上方；S6、钢箱梁落梁施工。本发明采用合理的钢箱梁过墩施工方法，实现无导梁顶推过墩，避免了导梁的安装和拆除占用较长的工期，可降低整体的架桥成本；通过逐步抽取临时支撑垫块与落梁垫块，实现整个钢箱梁的落梁施工，可有效降低或消除钢箱梁节段部分位置积聚的大量内部应力，便于后续的桥梁体系转换。
Novel pushing method for erecting steel box girder
一种用于钢箱梁架设的新型顶推方法
ZHU MIAO (author) / LIU SHEN (author) / XING YANG (author) / LONG DONGLI (author) / YANG CHEN (author) / CHEN MIN (author) / FAN JUNQI (author) / HU GUANGRUI (author) / LIU HAO (author) / YANG CUIPING (author)
2024-01-30
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Steel box girder pushing system and steel box girder pushing construction method
| European Patent Office | 2024