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A platform for research: civil engineering, architecture and urbanism
Mechanical large-diameter bottom expanding construction method for firm rock mass
The invention discloses a mechanical large-diameter bottom expanding construction method for a firm rock mass, and relates to the technical field of pile foundation construction. The mechanical large-diameter bottom expanding construction method comprises the steps that firstly, the construction time is calculated, and a schedule plan is formulated; construction preparation is carried out, and construction materials, constructors and construction machines enter the site; surveying and setting out are carried out; mechanical drilling is carried out; cutting and bottom expanding are carried out;final hole checking is carried out; primary hole cleaning is carried out; reinforcement cage machining and checking are carried out; a pile foundation reinforcement cage is hoisted and placed; a guide pipe is arranged; a steel protection cylinder is hoisted and placed; secondary hole cleaning is carried out; concrete pouring is carried out; concrete quality checking is carried out; ultrasonic detection is carried out; and construction is finished, and checking and acceptance are carried out. The mechanical large-diameter bottom expanding construction method for the firm rock mass has the beneficial effects that the hard rock mass chambering difficulty is reduced, the pile end bearing capacity is improved, the rock entering depth and the pile body length are saved, and the construction cost is saved; and the problems that the hard rock mass chambering is difficult, the construction efficiency is relatively low, the operation is complex, and consequently the construction is difficult are solved.
本发明公开了一种坚固岩体机械大直径扩底施工工法，涉及桩基施工技术领域，包括：开始，计算施工时间，编织进度计划；进行施工准备，施工材料、施工人员和施工机械进场；进行测量放线；进行机械钻孔；进行切割扩底；进行终孔检查；进行一次清孔；进行钢筋笼加工检验；进行吊放桩基础钢筋笼；进行安设导管；进行吊放钢护筒；进行二次清孔；进行灌注混凝土；进行混凝土质量检查；进行超声波检测；结束施工，检验验收。该坚固岩体机械大直径扩底施工工法，具有减小硬质岩体扩孔难度，提高桩端承载力，并且节约了入岩深度和桩身长度，节约施工成本的优点，解决了硬质岩体扩孔难度大，施工效率较低，操作复杂，导致施工困难的问题。
Mechanical large-diameter bottom expanding construction method for firm rock mass
The invention discloses a mechanical large-diameter bottom expanding construction method for a firm rock mass, and relates to the technical field of pile foundation construction. The mechanical large-diameter bottom expanding construction method comprises the steps that firstly, the construction time is calculated, and a schedule plan is formulated; construction preparation is carried out, and construction materials, constructors and construction machines enter the site; surveying and setting out are carried out; mechanical drilling is carried out; cutting and bottom expanding are carried out;final hole checking is carried out; primary hole cleaning is carried out; reinforcement cage machining and checking are carried out; a pile foundation reinforcement cage is hoisted and placed; a guide pipe is arranged; a steel protection cylinder is hoisted and placed; secondary hole cleaning is carried out; concrete pouring is carried out; concrete quality checking is carried out; ultrasonic detection is carried out; and construction is finished, and checking and acceptance are carried out. The mechanical large-diameter bottom expanding construction method for the firm rock mass has the beneficial effects that the hard rock mass chambering difficulty is reduced, the pile end bearing capacity is improved, the rock entering depth and the pile body length are saved, and the construction cost is saved; and the problems that the hard rock mass chambering is difficult, the construction efficiency is relatively low, the operation is complex, and consequently the construction is difficult are solved.
本发明公开了一种坚固岩体机械大直径扩底施工工法，涉及桩基施工技术领域，包括：开始，计算施工时间，编织进度计划；进行施工准备，施工材料、施工人员和施工机械进场；进行测量放线；进行机械钻孔；进行切割扩底；进行终孔检查；进行一次清孔；进行钢筋笼加工检验；进行吊放桩基础钢筋笼；进行安设导管；进行吊放钢护筒；进行二次清孔；进行灌注混凝土；进行混凝土质量检查；进行超声波检测；结束施工，检验验收。该坚固岩体机械大直径扩底施工工法，具有减小硬质岩体扩孔难度，提高桩端承载力，并且节约了入岩深度和桩身长度，节约施工成本的优点，解决了硬质岩体扩孔难度大，施工效率较低，操作复杂，导致施工困难的问题。
Mechanical large-diameter bottom expanding construction method for firm rock mass
一种坚固岩体机械大直径扩底施工工法
CHEN CHONGKAI (author)
2020-09-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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