Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bridge abutment construction method
The invention relates to the technical field of bridge engineering, and particularly relates to a bridge abutment construction method. In the prior art, a bridge abutment entering tunnel bottom is excavated to the bottom at one time, excavation height is large, construction site is large, if the side slope is loose, slump is easily caused. The bridge abutment construction method is characterized by comprising the following steps: cleaning tunnel outer side upward slope dangerous rock; carrying out anchor-plate retaining on the outer side slope of the tunnel; constructing foot locking anchor pipes on second lining portions on the two sides of an abutment front beam groove, additionally arranging temporary supports on the left side wall and the right side wall of a tunnel second lining, adopting step-by-step excavation for bridge abutment construction in the tunnel, adopting a concrete retaining wall excavation scheme for hole digging piles from left to right, carrying out segmental excavation, excavating one support , and carrying out concrete pouring after excavation to the designed elevation; pouring bearing platform concrete at a time, and arranging surface protection ribs on four side faces of the bearing platform; and pouring the platform body concrete in two times, wherein the first pouring height is the height of the bottom surface of the padstone, and the second pouringheight reaches the designed elevation. The method has the advantages that the construction site is small, and the slump phenomenon is prevented in segmented construction.
本发明涉及桥梁工程技术领域，具体涉及一种桥台施工方法，旨在解决现有技术中桥台进洞隧底一次开挖到底，开挖高度大，施工场地大，如果边坡松散容易造成溜坍的问题，其技术要点在于包括清理隧道外侧仰坡危石，对隧道外侧边坡进行锚喷支护，对桥台及台前梁槽两侧二衬部位施做锁脚锚管，对隧道二衬左、右边墙加设临时支撑，隧道内桥台施工采用分步开挖，先左后右，挖孔桩采用混凝土护壁开挖方案，分节开挖，开挖一节支护一节，开挖至设计标高后，下钢筋笼，进行混凝土的浇筑；承台砼一次浇筑，承台四个侧面设置护面筋；台身砼分两次进行浇筑，第一次浇筑高度为垫石底面高度，第二次浇筑至设计标高。优点是施工场地小，分段施工不会出现溜坍现象。
Bridge abutment construction method
The invention relates to the technical field of bridge engineering, and particularly relates to a bridge abutment construction method. In the prior art, a bridge abutment entering tunnel bottom is excavated to the bottom at one time, excavation height is large, construction site is large, if the side slope is loose, slump is easily caused. The bridge abutment construction method is characterized by comprising the following steps: cleaning tunnel outer side upward slope dangerous rock; carrying out anchor-plate retaining on the outer side slope of the tunnel; constructing foot locking anchor pipes on second lining portions on the two sides of an abutment front beam groove, additionally arranging temporary supports on the left side wall and the right side wall of a tunnel second lining, adopting step-by-step excavation for bridge abutment construction in the tunnel, adopting a concrete retaining wall excavation scheme for hole digging piles from left to right, carrying out segmental excavation, excavating one support , and carrying out concrete pouring after excavation to the designed elevation; pouring bearing platform concrete at a time, and arranging surface protection ribs on four side faces of the bearing platform; and pouring the platform body concrete in two times, wherein the first pouring height is the height of the bottom surface of the padstone, and the second pouringheight reaches the designed elevation. The method has the advantages that the construction site is small, and the slump phenomenon is prevented in segmented construction.
本发明涉及桥梁工程技术领域，具体涉及一种桥台施工方法，旨在解决现有技术中桥台进洞隧底一次开挖到底，开挖高度大，施工场地大，如果边坡松散容易造成溜坍的问题，其技术要点在于包括清理隧道外侧仰坡危石，对隧道外侧边坡进行锚喷支护，对桥台及台前梁槽两侧二衬部位施做锁脚锚管，对隧道二衬左、右边墙加设临时支撑，隧道内桥台施工采用分步开挖，先左后右，挖孔桩采用混凝土护壁开挖方案，分节开挖，开挖一节支护一节，开挖至设计标高后，下钢筋笼，进行混凝土的浇筑；承台砼一次浇筑，承台四个侧面设置护面筋；台身砼分两次进行浇筑，第一次浇筑高度为垫石底面高度，第二次浇筑至设计标高。优点是施工场地小，分段施工不会出现溜坍现象。
Bridge abutment construction method
一种桥台施工方法
WU MAN (Autor:in) / GE JIPING (Autor:in) / BAI SONG (Autor:in) / HOU ZHAOLONG (Autor:in) / KANG LI (Autor:in)
21.04.2020
Patent
Elektronische Ressource
Chinesisch
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