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A platform for research: civil engineering, architecture and urbanism
Deep foundation pit supporting construction method under silt geology
The invention discloses a deep foundation pit support construction method under sludge geology, which comprises the following steps: S1, construction preparation: a, site leveling: before formal entry construction and after pipeline investigation, removing obstacles within 2 meters below the ground of a construction site, taking protective measures if the obstacles cannot be removed, and then leveling and tamping; and b, pile position lofting is conducted, specifically, according to coordinate points, benchmarks and a foundation pit supporting plane graph provided by an owner, jet grouting pile large sample lofting is conducted, marks are made, ash lines are scattered, after the lines are tested again and are qualified, pile positions are laid on site through a steel ruler and a measuring line, bamboo sticks are used for tightening, one pile is provided with one stick, and it is guaranteed that the displacement deviation of the center of a pile hole is smaller than 10 mm. The Larsen steel sheet piles, the steel enclosing purlins and the steel supports are adopted as a supporting system of the deep foundation pit, the construction speed is high, the cost is low, the high-pressure jet grouting piles are adopted for conducting soil reinforcement on sludge below the elevation of the base in the foundation pit, and the stability of foundation pit supporting is improved.
本发明公开了一种淤泥地质下的深基坑支护施工方法，包括以下步骤：S1，施工准备：a.场地平整：正式进场施工前，进行管线调查后，清除施工场地地面以下2米以内的障碍物，不能清除的做好保护措施，然后整平、夯实；b.桩位放样：根据业主提供的坐标点、水准点和基坑支护平面图，进行旋喷桩大样放样，并做上记号，撒上灰线，经过复测验线合格后，用钢尺和测线实地布设桩位，并用竹签钉紧，一桩一签，保证桩孔中心移位偏差小于10mm。本发明通过采用拉森钢板桩、钢围檩、钢支撑作为深基坑的支护体系，施工速度快，成本较低，并且采用高压旋喷桩对基坑内基底标高以下淤泥进行土体加固，提高基坑支护的稳定性。
Deep foundation pit supporting construction method under silt geology
The invention discloses a deep foundation pit support construction method under sludge geology, which comprises the following steps: S1, construction preparation: a, site leveling: before formal entry construction and after pipeline investigation, removing obstacles within 2 meters below the ground of a construction site, taking protective measures if the obstacles cannot be removed, and then leveling and tamping; and b, pile position lofting is conducted, specifically, according to coordinate points, benchmarks and a foundation pit supporting plane graph provided by an owner, jet grouting pile large sample lofting is conducted, marks are made, ash lines are scattered, after the lines are tested again and are qualified, pile positions are laid on site through a steel ruler and a measuring line, bamboo sticks are used for tightening, one pile is provided with one stick, and it is guaranteed that the displacement deviation of the center of a pile hole is smaller than 10 mm. The Larsen steel sheet piles, the steel enclosing purlins and the steel supports are adopted as a supporting system of the deep foundation pit, the construction speed is high, the cost is low, the high-pressure jet grouting piles are adopted for conducting soil reinforcement on sludge below the elevation of the base in the foundation pit, and the stability of foundation pit supporting is improved.
本发明公开了一种淤泥地质下的深基坑支护施工方法，包括以下步骤：S1，施工准备：a.场地平整：正式进场施工前，进行管线调查后，清除施工场地地面以下2米以内的障碍物，不能清除的做好保护措施，然后整平、夯实；b.桩位放样：根据业主提供的坐标点、水准点和基坑支护平面图，进行旋喷桩大样放样，并做上记号，撒上灰线，经过复测验线合格后，用钢尺和测线实地布设桩位，并用竹签钉紧，一桩一签，保证桩孔中心移位偏差小于10mm。本发明通过采用拉森钢板桩、钢围檩、钢支撑作为深基坑的支护体系，施工速度快，成本较低，并且采用高压旋喷桩对基坑内基底标高以下淤泥进行土体加固，提高基坑支护的稳定性。
Deep foundation pit supporting construction method under silt geology
一种淤泥地质下的深基坑支护施工方法
WEI XIAOFAN (author) / ZHANG JIAN (author) / WANG JIAN (author) / LI MENG (author) / MENG LINGNAN (author) / FANG LINFU (author)
2024-03-22
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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