A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for pushing steel box girder for expressway
The invention belongs to the technical field of pushing processes, and particularly relates to a pushing method of a steel box girder for an expressway. Comprising the following steps that S1, a temporary support and a pushing facility are installed according to design requirements; s2, splicing and welding a front steel guide beam of 20-25 meters and a steel beam of 38-43 meters; s3, forward pushing is conducted by about 2-3 m for trial pushing, the pressure conditions of the temporary support and the pushing facility are detected, if the pressure conditions exceed a threshold value, the temporary support and the pushing facility are stopped, and then detection is conducted; s4, after trial pushing is correct, forward pushing is conducted by 15-25 m, and a steel beam of 14-24 m and a tail beam of 10 m are correspondingly assembled; s5, accumulating and pushing to the designed mileage; in the pushing process, the steel guide beam and the tail beam are dismantled in a distributed mode; detecting whether the pressure conditions of the temporary bracket and the pushing facility exceed a threshold value or not after each pushing is completed; s6, taking 40-60mm of each beam falling height as a round, and enabling the beam body to fall at the designed elevation through a plurality of rounds; and S7, pushing and beam falling facilities are dismantled. The jacking process can be monitored, and potential safety hazards are reduced.
本方案属于顶推工艺技术领域，具体设计一种高速公路用钢箱梁顶推方法。包括以下步骤：S1：根据设计要求安装临时支架和顶推设施；S2：拼装焊接20‑25米前钢导梁和38‑43米钢梁；S3：向前顶推约2‑3米进行试顶推，检测临时支架和顶推设施的受压情况，若超过阈值，则停止、然后检测；S4：试顶推无误后，向前顶推15‑25米，对应拼装14‑24米钢梁和10米尾梁；S5：累积顶推至设计里程；并在顶推过程中，分布拆除钢导梁和尾梁；每次顶推完成均检测临时支架和顶推设施的受压情况是否超过阈值；S6：以每次落梁高度40‑60mm为一个轮次，经过多个轮次，使梁体落于设计高程；S7：拆除顶推、落梁设施。能够对顶堆过程进行监测，减少了安全隐患。
Method for pushing steel box girder for expressway
The invention belongs to the technical field of pushing processes, and particularly relates to a pushing method of a steel box girder for an expressway. Comprising the following steps that S1, a temporary support and a pushing facility are installed according to design requirements; s2, splicing and welding a front steel guide beam of 20-25 meters and a steel beam of 38-43 meters; s3, forward pushing is conducted by about 2-3 m for trial pushing, the pressure conditions of the temporary support and the pushing facility are detected, if the pressure conditions exceed a threshold value, the temporary support and the pushing facility are stopped, and then detection is conducted; s4, after trial pushing is correct, forward pushing is conducted by 15-25 m, and a steel beam of 14-24 m and a tail beam of 10 m are correspondingly assembled; s5, accumulating and pushing to the designed mileage; in the pushing process, the steel guide beam and the tail beam are dismantled in a distributed mode; detecting whether the pressure conditions of the temporary bracket and the pushing facility exceed a threshold value or not after each pushing is completed; s6, taking 40-60mm of each beam falling height as a round, and enabling the beam body to fall at the designed elevation through a plurality of rounds; and S7, pushing and beam falling facilities are dismantled. The jacking process can be monitored, and potential safety hazards are reduced.
本方案属于顶推工艺技术领域，具体设计一种高速公路用钢箱梁顶推方法。包括以下步骤：S1：根据设计要求安装临时支架和顶推设施；S2：拼装焊接20‑25米前钢导梁和38‑43米钢梁；S3：向前顶推约2‑3米进行试顶推，检测临时支架和顶推设施的受压情况，若超过阈值，则停止、然后检测；S4：试顶推无误后，向前顶推15‑25米，对应拼装14‑24米钢梁和10米尾梁；S5：累积顶推至设计里程；并在顶推过程中，分布拆除钢导梁和尾梁；每次顶推完成均检测临时支架和顶推设施的受压情况是否超过阈值；S6：以每次落梁高度40‑60mm为一个轮次，经过多个轮次，使梁体落于设计高程；S7：拆除顶推、落梁设施。能够对顶堆过程进行监测，减少了安全隐患。
Method for pushing steel box girder for expressway
一种高速公路用钢箱梁顶推方法
ZHOU BO (author) / HUANG HAIQING (author) / TANG XIAOCHENG (author) / YUAN ZHONGHUA (author) / ZHANG JIANHONG (author) / LIU YANGYANG (author) / WU FAN (author) / REN JIAWEI (author)
2024-12-06
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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