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A platform for research: civil engineering, architecture and urbanism
Cast-in-situ bored pile construction method under poor stratum
The invention relates to a construction method of a cast-in-situ bored pile under a poor stratum, and belongs to the technical field of civil construction of constructional engineering. Comprising the following steps. Site leveling, measuring and positioning, drilling machine in place, slurry preparing, hole guiding to 11 m through a rotary drilling machine, steel casing pre-assembling, first casing section shocking and burying through a shocking hammer, section-by-section lengthening and downward shocking and burying of the steel casing to 12 m, rotary drilling machine drilling and hole forming to the designed depth, hole cleaning, steel reinforcement cage placing through a crane, secondary hole cleaning and pre-stirring the concrete guide pipe is poured underwater to form a pile; in the segmented guide pipe pulling process, the steel casing is pulled out and dismantled at the same time; and post-grouting is conducted at the pile end. Wherein the steel casing is formed by sequentially connecting six casing sections in a socket mode. According to the method, the hole-forming and pile-forming quality is improved, the construction problems of drill burying, drill jamming and the like are avoided, the construction progress is accelerated, the engineering quality is guaranteed, the construction period is shortened, it is guaranteed that pile foundation engineering is safely and smoothly implemented, and good social and economic benefits are achieved.
本发明为一种不良地层下钻孔灌注桩施工方法，属于建筑工程土建施工技术领域，包括步骤：场地平整→测量定位→钻机就位→制备泥浆→通过旋挖钻机引孔至11m→钢护筒预拼装→震冲锤震冲埋设一号护筒段→逐段接长并向下震冲埋设钢护筒至12m→旋挖钻机跟管钻进成孔至设计深度→清孔→吊车安放钢筋笼→二次清孔→预拌砼导管水下灌注成桩→分段拔导管过程中钢护筒也同时随之拨出拆除→桩端后注浆；其中，钢护筒由六节护筒段采用承插方式依次连接而成。本发明方法提高了成孔成桩质量，避免了埋钻、卡钻等施工问题，加快了施工进度，保证了工程质量，缩短了施工工期，保证了桩基工程安全顺利的实施，达到了较好的社会、经济效益。
Cast-in-situ bored pile construction method under poor stratum
The invention relates to a construction method of a cast-in-situ bored pile under a poor stratum, and belongs to the technical field of civil construction of constructional engineering. Comprising the following steps. Site leveling, measuring and positioning, drilling machine in place, slurry preparing, hole guiding to 11 m through a rotary drilling machine, steel casing pre-assembling, first casing section shocking and burying through a shocking hammer, section-by-section lengthening and downward shocking and burying of the steel casing to 12 m, rotary drilling machine drilling and hole forming to the designed depth, hole cleaning, steel reinforcement cage placing through a crane, secondary hole cleaning and pre-stirring the concrete guide pipe is poured underwater to form a pile; in the segmented guide pipe pulling process, the steel casing is pulled out and dismantled at the same time; and post-grouting is conducted at the pile end. Wherein the steel casing is formed by sequentially connecting six casing sections in a socket mode. According to the method, the hole-forming and pile-forming quality is improved, the construction problems of drill burying, drill jamming and the like are avoided, the construction progress is accelerated, the engineering quality is guaranteed, the construction period is shortened, it is guaranteed that pile foundation engineering is safely and smoothly implemented, and good social and economic benefits are achieved.
本发明为一种不良地层下钻孔灌注桩施工方法，属于建筑工程土建施工技术领域，包括步骤：场地平整→测量定位→钻机就位→制备泥浆→通过旋挖钻机引孔至11m→钢护筒预拼装→震冲锤震冲埋设一号护筒段→逐段接长并向下震冲埋设钢护筒至12m→旋挖钻机跟管钻进成孔至设计深度→清孔→吊车安放钢筋笼→二次清孔→预拌砼导管水下灌注成桩→分段拔导管过程中钢护筒也同时随之拨出拆除→桩端后注浆；其中，钢护筒由六节护筒段采用承插方式依次连接而成。本发明方法提高了成孔成桩质量，避免了埋钻、卡钻等施工问题，加快了施工进度，保证了工程质量，缩短了施工工期，保证了桩基工程安全顺利的实施，达到了较好的社会、经济效益。
Cast-in-situ bored pile construction method under poor stratum
不良地层下钻孔灌注桩施工方法
WANG YUQING (author) / YANG KUI (author) / JING RUIHONG (author) / GUO PENGFEI (author) / WANG SHUIWANG (author) / TIAN GUIYUAN (author) / REN YONGWEI (author) / MIAO CHAO (author) / LIU XUHUI (author) / WANG JING (author)
2024-10-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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