A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Multi-boulder stratum super-large-diameter cast-in-place pile composite hole forming construction method
The invention relates to the technical field of cast-in-place pile construction, and provides a multi-boulder stratum super-large-diameter cast-in-place pile composite hole forming construction method which specifically comprises the following steps that firstly, early-stage preparation is conducted; 2, a drilling machine is in place, and hole positions are corrected; step 3, drilling a soil layer; 4, replacing the cone drill to take a core when encountering boulders; 5, impacting after soil filling; and 6, after soil is backfilled, impact hole forming is carried out. Wherein the diameter of the cast-in-place pile is phi 2500mm, the effective construction pile length of the pile is 57.8 m, the soil layer is 32.8 m, three layers of boulder, probe stone and oblique rock are arranged, the thickness of the boulder is 13.9 m, the thickness of fragmented and discrete granite is 9.6 m, the thickness of weathered granite in a bearing stratum is 1.5 m, and construction is conducted through a rotary excavating and impacting composite hole forming process. By means of the technical scheme, the problems that in existing multi-boulder stratum super-large-diameter cast-in-place pile composite hole forming construction, the construction difficulty is large, the construction period is long, and the lease cost of mechanical equipment can be greatly increased are solved, the better using effect can be achieved, and the application prospect is better.
本发明涉及灌注桩施工技术领域，提出了多孤石地层超大直径灌注桩复合成孔施工方法，具体包括如下步骤：步骤一：前期准备；步骤二：钻机就位、孔位校正；步骤三：土层钻进；步骤四：遇孤石更换牙轮钻取芯；步骤五：填土后冲击；步骤六：回填土后冲击成孔。其中，灌注桩的直径为Ф2500mm，桩的施工有效桩长为57.8m，土层为32.8m，孤石、探头石、斜岩一共有三层，孤石厚度共13.9m，碎裂状及散体状花岗岩共9.6m，且入持力层中风化花岗岩1.5m，采用旋挖+冲击复合成孔工艺法施工。通过上述技术方案，解决了现有多孤石地层超大直径灌注桩复合成孔施工，往往施工难度较大，且工期较长，会极大的增加机械设备的租赁费用问题，能够带来更好使用效果，应用前景更好。
Multi-boulder stratum super-large-diameter cast-in-place pile composite hole forming construction method
The invention relates to the technical field of cast-in-place pile construction, and provides a multi-boulder stratum super-large-diameter cast-in-place pile composite hole forming construction method which specifically comprises the following steps that firstly, early-stage preparation is conducted; 2, a drilling machine is in place, and hole positions are corrected; step 3, drilling a soil layer; 4, replacing the cone drill to take a core when encountering boulders; 5, impacting after soil filling; and 6, after soil is backfilled, impact hole forming is carried out. Wherein the diameter of the cast-in-place pile is phi 2500mm, the effective construction pile length of the pile is 57.8 m, the soil layer is 32.8 m, three layers of boulder, probe stone and oblique rock are arranged, the thickness of the boulder is 13.9 m, the thickness of fragmented and discrete granite is 9.6 m, the thickness of weathered granite in a bearing stratum is 1.5 m, and construction is conducted through a rotary excavating and impacting composite hole forming process. By means of the technical scheme, the problems that in existing multi-boulder stratum super-large-diameter cast-in-place pile composite hole forming construction, the construction difficulty is large, the construction period is long, and the lease cost of mechanical equipment can be greatly increased are solved, the better using effect can be achieved, and the application prospect is better.
本发明涉及灌注桩施工技术领域，提出了多孤石地层超大直径灌注桩复合成孔施工方法，具体包括如下步骤：步骤一：前期准备；步骤二：钻机就位、孔位校正；步骤三：土层钻进；步骤四：遇孤石更换牙轮钻取芯；步骤五：填土后冲击；步骤六：回填土后冲击成孔。其中，灌注桩的直径为Ф2500mm，桩的施工有效桩长为57.8m，土层为32.8m，孤石、探头石、斜岩一共有三层，孤石厚度共13.9m，碎裂状及散体状花岗岩共9.6m，且入持力层中风化花岗岩1.5m，采用旋挖+冲击复合成孔工艺法施工。通过上述技术方案，解决了现有多孤石地层超大直径灌注桩复合成孔施工，往往施工难度较大，且工期较长，会极大的增加机械设备的租赁费用问题，能够带来更好使用效果，应用前景更好。
Multi-boulder stratum super-large-diameter cast-in-place pile composite hole forming construction method
多孤石地层超大直径灌注桩复合成孔施工方法
LI PENGKUN (author) / GUO ZHENZHI (author) / ZHENG SHICHUN (author) / LONG ZIFU (author)
2023-04-28
Patent
Electronic Resource
Chinese
| European Patent Office | 2024
Cast-in-place pile hole-forming construction method for complex stratum
| European Patent Office | 2022
Cast-in-place pile hole-forming construction structure for complex stratum
| European Patent Office | 2022
Pile foundation hole forming construction method under boulder water outlet stratum condition
| European Patent Office | 2022
Large-diameter super-long cast-in-place pile construction method
| European Patent Office | 2021