Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mountainous area bridge construction method with large water volume change
The invention discloses a mountainous area bridge construction method with large water volume change, which comprises the following steps: preparation before construction: in a drawing rechecking stage, carefully checking the bridge structure size and the part elevation, calculating the engineering quantity, and carefully comparing and analyzing whether the design ground elevation and the longitudinal and transverse sections at the pier position are consistent with the reality; making sufficient technical data preparation before construction, and determining the excavation position and the excavation depth of the pile foundation; and bridge foundation construction: measuring and setting out to determine the position of a foundation pit, then carrying out manual hole digging by adopting a delayed blasting method, removing slag after hole digging, repairing a hole wall, then expanding a hole in a rock mass at the bottom of a pile hole, placing a reinforcement cage in the pile hole, and placing an expanded reinforcement cage in the expanded hole. The method has the beneficial effects that the concrete follow-up retaining wall is adopted, the construction safety and the pouring quality of pile foundation concrete are ensured, the number of used mechanical equipment is small, the construction investment is reduced, the engineering cost is reduced, the professional degree of construction is small, the construction face is wide, the number of excavation points is large, and the construction progress is accelerated.
本发明公开了一种水量变化大山区桥梁施工方法，包括以下步骤：施工前准备：在图纸复核阶段，认真核对桥梁结构尺寸、部位高程、工程量计算，且对设计地面高程和墩位处纵横断面与实际是否一致进行仔细比对分析，为施工前做好充分的技术资料准备，并确定桩基开挖位置及其开挖深度；桥基施工：测量放样确定基坑的位置，然后采用延时爆破法进行人工挖孔，挖孔后清渣，修理孔壁，然后在桩孔底部岩体上面扩孔，然后往桩孔中安放钢筋笼，在扩孔内放置扩大钢筋笼。有益效果：采用砼跟进护壁，确保施工安全和桩基砼的灌注质量，使用的机械设备少，减少施工投入，降低工程造价，且施工的专业程度小，施工面广，开挖点多，加快施工进度。
Mountainous area bridge construction method with large water volume change
The invention discloses a mountainous area bridge construction method with large water volume change, which comprises the following steps: preparation before construction: in a drawing rechecking stage, carefully checking the bridge structure size and the part elevation, calculating the engineering quantity, and carefully comparing and analyzing whether the design ground elevation and the longitudinal and transverse sections at the pier position are consistent with the reality; making sufficient technical data preparation before construction, and determining the excavation position and the excavation depth of the pile foundation; and bridge foundation construction: measuring and setting out to determine the position of a foundation pit, then carrying out manual hole digging by adopting a delayed blasting method, removing slag after hole digging, repairing a hole wall, then expanding a hole in a rock mass at the bottom of a pile hole, placing a reinforcement cage in the pile hole, and placing an expanded reinforcement cage in the expanded hole. The method has the beneficial effects that the concrete follow-up retaining wall is adopted, the construction safety and the pouring quality of pile foundation concrete are ensured, the number of used mechanical equipment is small, the construction investment is reduced, the engineering cost is reduced, the professional degree of construction is small, the construction face is wide, the number of excavation points is large, and the construction progress is accelerated.
本发明公开了一种水量变化大山区桥梁施工方法，包括以下步骤：施工前准备：在图纸复核阶段，认真核对桥梁结构尺寸、部位高程、工程量计算，且对设计地面高程和墩位处纵横断面与实际是否一致进行仔细比对分析，为施工前做好充分的技术资料准备，并确定桩基开挖位置及其开挖深度；桥基施工：测量放样确定基坑的位置，然后采用延时爆破法进行人工挖孔，挖孔后清渣，修理孔壁，然后在桩孔底部岩体上面扩孔，然后往桩孔中安放钢筋笼，在扩孔内放置扩大钢筋笼。有益效果：采用砼跟进护壁，确保施工安全和桩基砼的灌注质量，使用的机械设备少，减少施工投入，降低工程造价，且施工的专业程度小，施工面广，开挖点多，加快施工进度。
Mountainous area bridge construction method with large water volume change
一种水量变化大山区桥梁施工方法
FENG LIN (Autor:in) / YU LINXIANG (Autor:in) / ZHENG CHENXU (Autor:in) / DONG QINGJIANG (Autor:in) / PAN PENGFEI (Autor:in)
15.10.2021
Patent
Elektronische Ressource
Chinesisch
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