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Construction method of steel pipe pile foundation of trestle bridge in gravel
The invention discloses a construction method of a steel pipe pile foundation of a trestle bridge in gravel. The construction method comprises the steps that 1, manual filling is carried out in an established area of the trestle bridge; 2, a rotary drilling rig carries out positioning and hole drilling for rotary drilling; 3, a steel protective cylinder is buried after the rotary drilling rig drills a hole at the lofting point, after the burying of the steel protective cylinder is finished, the rotary drilling rig continues to carry out rotary drilling downwards for a first preset distance andthe buried steel protective cylinder is rotated and jacked to follow, then the rotary drilling construction is continued downwards, the steel protective cylinder remains in place after the rotary drilling reaches the designed depth, and a rotary drilling drill bit is withdrawn; 4, the rotary drilling drill bit is withdrawn after the rotary drilling reaches the designed depth, the rotary drillingdrill bit is replaced with a hole cleaning drill bit for the rotary drilling rig to remove loose gravel sediment at the bottom of the hole, and a guide pipe is installed for concrete pouring after thehole is cleaned; 5, after the concrete pouring is finished, the matching of an automobile crane and the rotary drilling rig is immediately adopted to implant the machined steel pipe pile foundation of the trestle bridge into concrete; and 6, a down structure, a Bailey beam and an upper accessory structure of the trestle bridge are installed after completing the construction of the steel pipe pilefoundation of the trestle bridge, and the construction of a next steel pipe pile foundation of the trestle bridge is carried out after the down structure, the Bailey beam and the upper accessory structure of the trestle bridge are installed.
本发明公开了一种砂砾石中栈桥钢管桩基础的施工方法，包括：S1、在栈桥既定区域人工填筑；S2、旋挖钻机定位开孔进行旋挖；S3、旋挖钻机在放样点开孔后埋设钢护筒，钢护筒埋置完成后继续向下旋挖第一预设距离后将埋置的钢护筒旋转顶压跟进，然后继续向下旋挖施工，旋挖至设计深度后钢护筒留在原位，退出旋挖钻头；S4、旋挖至设计深度后退出旋挖钻头，旋挖钻机更换为清孔钻头对孔底松散的砂砾石沉渣进行清除，清孔后安装导管浇筑混凝土；S5、在混凝土浇筑完成后立即采用汽车吊与挖机配合将加工好的栈桥钢管基础植入混凝土中；S6、栈桥钢管桩基础完成施工后完成栈桥下部构造、贝雷梁安装及上部附属结构，完成后进行下一栈桥钢管桩基础施工。
Construction method of steel pipe pile foundation of trestle bridge in gravel
The invention discloses a construction method of a steel pipe pile foundation of a trestle bridge in gravel. The construction method comprises the steps that 1, manual filling is carried out in an established area of the trestle bridge; 2, a rotary drilling rig carries out positioning and hole drilling for rotary drilling; 3, a steel protective cylinder is buried after the rotary drilling rig drills a hole at the lofting point, after the burying of the steel protective cylinder is finished, the rotary drilling rig continues to carry out rotary drilling downwards for a first preset distance andthe buried steel protective cylinder is rotated and jacked to follow, then the rotary drilling construction is continued downwards, the steel protective cylinder remains in place after the rotary drilling reaches the designed depth, and a rotary drilling drill bit is withdrawn; 4, the rotary drilling drill bit is withdrawn after the rotary drilling reaches the designed depth, the rotary drillingdrill bit is replaced with a hole cleaning drill bit for the rotary drilling rig to remove loose gravel sediment at the bottom of the hole, and a guide pipe is installed for concrete pouring after thehole is cleaned; 5, after the concrete pouring is finished, the matching of an automobile crane and the rotary drilling rig is immediately adopted to implant the machined steel pipe pile foundation of the trestle bridge into concrete; and 6, a down structure, a Bailey beam and an upper accessory structure of the trestle bridge are installed after completing the construction of the steel pipe pilefoundation of the trestle bridge, and the construction of a next steel pipe pile foundation of the trestle bridge is carried out after the down structure, the Bailey beam and the upper accessory structure of the trestle bridge are installed.
本发明公开了一种砂砾石中栈桥钢管桩基础的施工方法，包括：S1、在栈桥既定区域人工填筑；S2、旋挖钻机定位开孔进行旋挖；S3、旋挖钻机在放样点开孔后埋设钢护筒，钢护筒埋置完成后继续向下旋挖第一预设距离后将埋置的钢护筒旋转顶压跟进，然后继续向下旋挖施工，旋挖至设计深度后钢护筒留在原位，退出旋挖钻头；S4、旋挖至设计深度后退出旋挖钻头，旋挖钻机更换为清孔钻头对孔底松散的砂砾石沉渣进行清除，清孔后安装导管浇筑混凝土；S5、在混凝土浇筑完成后立即采用汽车吊与挖机配合将加工好的栈桥钢管基础植入混凝土中；S6、栈桥钢管桩基础完成施工后完成栈桥下部构造、贝雷梁安装及上部附属结构，完成后进行下一栈桥钢管桩基础施工。
Construction method of steel pipe pile foundation of trestle bridge in gravel
砂砾石中栈桥钢管桩基础的施工方法
SHEN LUMING (author) / WANG XIANG (author) / QIN JIANJUN (author) / HE NING (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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