Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Deepwater shallow-covering-layer trestle foundation construction method
The invention discloses a deepwater shallow-covering-layer trestle foundation construction method, and belongs to the technical field of trestle construction. The deepwater shallow-covering-layer trestle foundation construction method comprises the following steps of determining a steel casing driving position, building a construction platform, and enabling a rotary drilling rig to enter; utilizing the rotary drilling rig for drilling; driving the steel casing from an orifice, and cleaning a hole; filling sand into the steel casing, forming a sand filling pile, and pulling out the steel casing; driving a trestle steel pipe pile from the top part of the sand filling pile until reaching the designed elevation; and repeating the steps to carry out next trestle foundation construction until all trestle foundation construction is accomplished. According to the deepwater shallow-covering-layer trestle foundation construction method provided by the invention, the rotary drilling rig carries out hole guiding operation in advance, so that the obstacles enabling a deepwater shallow-covering-layer steel pipe pile to be incapable of penetrating through a hard rock stratum are removed, the steel pipe pile driving efficiency is improved, and a sufficient anchoring force and the stability are provided for the steel pipe pile. According to the construction method, through filling the sand intothe steel casing, the sand filling pile is formed; the sand filling pile and the hard rock stratum are displaced, so that the trestle steel pipe pile is conveniently driven into soil; and in addition, the trestle steel pipe pile can be recycled after being pulled out, so that the construction cost is reduced.
本发明公开了一种深水浅覆盖层栈桥基础施工方法，属于栈桥施工技术领域。包括以下步骤：确定钢护筒插打位置，搭建施工平台，旋挖钻机进场；利用旋挖钻机进行钻孔作业；从孔口插打钢护筒并清孔；在钢护筒内灌砂形成灌砂桩并拔出钢护筒；从灌砂桩的顶部插打栈桥钢管桩至设计标高；重复上述步骤对下一栈桥基础施工，直到所有栈桥基础施工完成。本发明旋挖钻机预先进行引孔作业，排除了深水浅覆盖层钢管桩无法穿过硬质岩层的障碍，提高了钢管桩插打的效率，为钢管桩提供足够的锚固力和稳定性。该施工方法通过在钢护筒内灌砂形成灌砂桩，灌砂桩与硬质岩层进行了置换，便于栈桥钢管桩插打入土，并且栈桥钢管桩拔出后能够重复利用，降低了施工成本。
Deepwater shallow-covering-layer trestle foundation construction method
The invention discloses a deepwater shallow-covering-layer trestle foundation construction method, and belongs to the technical field of trestle construction. The deepwater shallow-covering-layer trestle foundation construction method comprises the following steps of determining a steel casing driving position, building a construction platform, and enabling a rotary drilling rig to enter; utilizing the rotary drilling rig for drilling; driving the steel casing from an orifice, and cleaning a hole; filling sand into the steel casing, forming a sand filling pile, and pulling out the steel casing; driving a trestle steel pipe pile from the top part of the sand filling pile until reaching the designed elevation; and repeating the steps to carry out next trestle foundation construction until all trestle foundation construction is accomplished. According to the deepwater shallow-covering-layer trestle foundation construction method provided by the invention, the rotary drilling rig carries out hole guiding operation in advance, so that the obstacles enabling a deepwater shallow-covering-layer steel pipe pile to be incapable of penetrating through a hard rock stratum are removed, the steel pipe pile driving efficiency is improved, and a sufficient anchoring force and the stability are provided for the steel pipe pile. According to the construction method, through filling the sand intothe steel casing, the sand filling pile is formed; the sand filling pile and the hard rock stratum are displaced, so that the trestle steel pipe pile is conveniently driven into soil; and in addition, the trestle steel pipe pile can be recycled after being pulled out, so that the construction cost is reduced.
本发明公开了一种深水浅覆盖层栈桥基础施工方法，属于栈桥施工技术领域。包括以下步骤：确定钢护筒插打位置，搭建施工平台，旋挖钻机进场；利用旋挖钻机进行钻孔作业；从孔口插打钢护筒并清孔；在钢护筒内灌砂形成灌砂桩并拔出钢护筒；从灌砂桩的顶部插打栈桥钢管桩至设计标高；重复上述步骤对下一栈桥基础施工，直到所有栈桥基础施工完成。本发明旋挖钻机预先进行引孔作业，排除了深水浅覆盖层钢管桩无法穿过硬质岩层的障碍，提高了钢管桩插打的效率，为钢管桩提供足够的锚固力和稳定性。该施工方法通过在钢护筒内灌砂形成灌砂桩，灌砂桩与硬质岩层进行了置换，便于栈桥钢管桩插打入土，并且栈桥钢管桩拔出后能够重复利用，降低了施工成本。
Deepwater shallow-covering-layer trestle foundation construction method
一种深水浅覆盖层栈桥基础施工方法
ZHOU LONG (Autor:in) / WU YI (Autor:in) / ZHU LIUYANG (Autor:in) / CHEN FEI (Autor:in) / CHENG LINGANG (Autor:in) / MO PENGDONG (Autor:in) / ZHANG PING (Autor:in) / YOU YANG (Autor:in) / LI DEKUN (Autor:in) / LI FANGJUN (Autor:in)
10.04.2020
Patent
Elektronische Ressource
Chinesisch
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