A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bridge main pier bearing platform and tower base construction method
The invention relates to the technical field of pile cap and tower base construction, and discloses a bridge main pier pile cap and tower base construction method which comprises the following steps: firstly, measuring the elevation of the top surface of a pile head, making an obvious mark, chiseling the pile head by adopting an air pick and a cutting mode, stripping concrete on the outer side of the pile head, taking out the pile head by using a crane, and after the pile head is chiseled out, taking out the pile head; the quality of the pile head is judged, and when obvious defects that the pile head does not clamp mud, concrete does not contain coarse aggregate, a reinforcement cage is exposed and the like are found, the pile head needs to be chiseled out to supplement the pile again. According to the bridge main pier bearing platform and tower base construction method, pouring is conducted twice in the thickness direction, the bottom of a tower column embedded steel bar is poured for the first time, and the rest part of the bearing platform, the tower base and a tower column pre-poured section are poured and formed together for the second time, so that the structural integrity of the position with the large section mutation is improved, the concrete age difference is reduced, and the construction efficiency is improved. Concrete cracking of the tower base and the tower column in the later period is avoided, and then the service life of the bridge is prolonged.
本发明涉及承台及塔座施工技术领域，且公开了大桥主墩承台及塔座施工方法，包括以下步骤：首先测量桩头顶面高程，并做好明显标识，采用风镐、切割方式对桩头进行凿除，在桩头外侧混凝土剥除后，使用吊车将其调出，桩头凿出完成后，应对桩头质量进行判断，当发现桩头没有夹泥、混凝土无粗骨料、钢筋笼外露等明显缺陷时，应凿出桩头重新补桩。该大桥主墩承台及塔座施工方法，在厚度方向上共分两次浇筑，第一次浇筑塔柱预埋钢筋底部，第二次将承台剩余部分、塔座及塔柱预浇段一并浇筑成型，从而提高了截面突变较大处结构整体性，并且减小混凝土龄期差，避免后期塔座与塔柱出现混凝土开裂的情况，进而提高大桥的使用寿命。
Bridge main pier bearing platform and tower base construction method
The invention relates to the technical field of pile cap and tower base construction, and discloses a bridge main pier pile cap and tower base construction method which comprises the following steps: firstly, measuring the elevation of the top surface of a pile head, making an obvious mark, chiseling the pile head by adopting an air pick and a cutting mode, stripping concrete on the outer side of the pile head, taking out the pile head by using a crane, and after the pile head is chiseled out, taking out the pile head; the quality of the pile head is judged, and when obvious defects that the pile head does not clamp mud, concrete does not contain coarse aggregate, a reinforcement cage is exposed and the like are found, the pile head needs to be chiseled out to supplement the pile again. According to the bridge main pier bearing platform and tower base construction method, pouring is conducted twice in the thickness direction, the bottom of a tower column embedded steel bar is poured for the first time, and the rest part of the bearing platform, the tower base and a tower column pre-poured section are poured and formed together for the second time, so that the structural integrity of the position with the large section mutation is improved, the concrete age difference is reduced, and the construction efficiency is improved. Concrete cracking of the tower base and the tower column in the later period is avoided, and then the service life of the bridge is prolonged.
本发明涉及承台及塔座施工技术领域，且公开了大桥主墩承台及塔座施工方法，包括以下步骤：首先测量桩头顶面高程，并做好明显标识，采用风镐、切割方式对桩头进行凿除，在桩头外侧混凝土剥除后，使用吊车将其调出，桩头凿出完成后，应对桩头质量进行判断，当发现桩头没有夹泥、混凝土无粗骨料、钢筋笼外露等明显缺陷时，应凿出桩头重新补桩。该大桥主墩承台及塔座施工方法，在厚度方向上共分两次浇筑，第一次浇筑塔柱预埋钢筋底部，第二次将承台剩余部分、塔座及塔柱预浇段一并浇筑成型，从而提高了截面突变较大处结构整体性，并且减小混凝土龄期差，避免后期塔座与塔柱出现混凝土开裂的情况，进而提高大桥的使用寿命。
Bridge main pier bearing platform and tower base construction method
大桥主墩承台及塔座施工方法
BAI LU (author) / BAEK SE-HEUM (author)
2023-10-13
Patent
Electronic Resource
Chinese
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