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A platform for research: civil engineering, architecture and urbanism
Karst stratum cast-in-situ bored pile construction method
The invention discloses a karst stratum cast-in-situ bored pile construction method. The karst stratum cast-in-situ bored pile construction method comprises the steps that site leveling is conducted before construction, and advanced drilling and surveying; pile center line positioning and paying off are conducted; mud pit excavation is conducted; pile casing embedding is conducted; pile machine in-place is conducted; correction and hole forming are conducted; mud circulation is conducted; mud removal is conducted; karst layer top plate breakdown is conducted; karst layer tamping or mud wall manufacturing is conducted; continuous impact hole forming is conducted; repeated tamping is conducted; repeated hole forming is conducted; sediment removal is conducted; and hole inspection is conducted. The karst stratum cast-in-situ bored pile construction method solves the problems of karst cave hole forming and wall protection difficulty of geology with poor karst development, the comprehensivecost is increased by 1.87% on the basis of the pile foundation construction cost, and the method is economical and reasonable. The karst stratum cast-in-situ bored pile construction method solves theproblems of low impact drilling hole forming efficiency and low construction speed, and meanwhile the requirements for reliable quality, safe construction, economical efficiency and practicability are met. In addition, in the construction process, all pile foundation tests are qualified, no dangerous accident occurs, civilized construction and environmental protection are controlled, and the method can be widely applied. The karst stratum cast-in-situ bored pile construction method is reliable in quality, safe in construction, economical and practical.
本发明是一种岩溶地层钻孔灌注桩施工方法，包括步骤：施工前进行场地平整，并完成超前钻勘→桩中心线定位放线→泥浆池开挖→埋设护筒→桩机就位→校正并造孔→泥浆循环→清除浆泥→击穿岩溶层顶板→填实岩溶层或制造泥壁→继续冲击造孔→重复填实→重复造孔→清除沉渣→验孔。本发明解决了因岩溶发育不良地质的溶洞成孔问题、护壁困难问题，综合造价在桩基施工造价的基础上增加了1.87％，属于经济合理。本发明解决了冲击钻成孔效率低，施工速度慢的问题，同时满足质量可靠，施工安全，经济实用。此外，在施工过程中，各桩基试验合格，未发生危险事故，文明施工及环保受控，可以进行广泛应用。本发明质量可靠，施工安全，经济实用。
Karst stratum cast-in-situ bored pile construction method
The invention discloses a karst stratum cast-in-situ bored pile construction method. The karst stratum cast-in-situ bored pile construction method comprises the steps that site leveling is conducted before construction, and advanced drilling and surveying; pile center line positioning and paying off are conducted; mud pit excavation is conducted; pile casing embedding is conducted; pile machine in-place is conducted; correction and hole forming are conducted; mud circulation is conducted; mud removal is conducted; karst layer top plate breakdown is conducted; karst layer tamping or mud wall manufacturing is conducted; continuous impact hole forming is conducted; repeated tamping is conducted; repeated hole forming is conducted; sediment removal is conducted; and hole inspection is conducted. The karst stratum cast-in-situ bored pile construction method solves the problems of karst cave hole forming and wall protection difficulty of geology with poor karst development, the comprehensivecost is increased by 1.87% on the basis of the pile foundation construction cost, and the method is economical and reasonable. The karst stratum cast-in-situ bored pile construction method solves theproblems of low impact drilling hole forming efficiency and low construction speed, and meanwhile the requirements for reliable quality, safe construction, economical efficiency and practicability are met. In addition, in the construction process, all pile foundation tests are qualified, no dangerous accident occurs, civilized construction and environmental protection are controlled, and the method can be widely applied. The karst stratum cast-in-situ bored pile construction method is reliable in quality, safe in construction, economical and practical.
本发明是一种岩溶地层钻孔灌注桩施工方法，包括步骤：施工前进行场地平整，并完成超前钻勘→桩中心线定位放线→泥浆池开挖→埋设护筒→桩机就位→校正并造孔→泥浆循环→清除浆泥→击穿岩溶层顶板→填实岩溶层或制造泥壁→继续冲击造孔→重复填实→重复造孔→清除沉渣→验孔。本发明解决了因岩溶发育不良地质的溶洞成孔问题、护壁困难问题，综合造价在桩基施工造价的基础上增加了1.87％，属于经济合理。本发明解决了冲击钻成孔效率低，施工速度慢的问题，同时满足质量可靠，施工安全，经济实用。此外，在施工过程中，各桩基试验合格，未发生危险事故，文明施工及环保受控，可以进行广泛应用。本发明质量可靠，施工安全，经济实用。
Karst stratum cast-in-situ bored pile construction method
一种岩溶地层钻孔灌注桩施工方法
YOU HANYU (author) / JIANG XIAOJIANG (author) / DANG CHENGMING (author) / XU YUE (author) / FENG CHAO (author)
2020-12-04
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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