Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rotary excavating pile foundation double-steel-casing construction method
The invention discloses a rotary excavating pile foundation double-steel-casing construction method. The rotary excavating pile foundation double-steel-casing construction method comprises the following steps that step 1, positioning and setting-out are constructed on site according to a construction drawing, a measuring grid is established, and points are measured and set out; step 2, after the position is adjusted, a guide hole is excavated; step 3, whether the pile position is consistent with the center of an outer steel casing or not is checked, the periphery of the outer steel casing is filled with soil and tamped after correction, and the outer steel casing is sunken to the height H1 through a crawler-type vibratory hammer; step 4, a positioning hoop is installed at an orifice of theouter steel casing, and then the crawler-type vibratory hammer is adopted to enable an inner steel casing to sink from the interior of the positioning hoop and penetrate through the outer steel casing to reach a dense soil layer or a strong weathered layer; step 5, a hole is formed through drilling, the hole is cleaned, and a reinforcement cage is installed; and step 6, concrete is poured, and the inner steel casing and the outer steel casing are pulled out. Compared with the prior art, the construction efficiency of the rotary excavating pile in the high backfill area is improved, and the processing quality and economic benefits of a pile foundation are improved.
本发明公开了一种旋挖桩基双钢护筒施工方法，包括以下步骤：步骤一，根据施工图在现场定位放线，建立测量网格，进行测量放点；步骤二，调整好位置后，开挖引孔；步骤三，校核桩位与外钢护筒中心是否一致，校正后外钢护筒外围填土夯实，采用履带式振动锤下沉外钢护筒至H1高度后；步骤四，在外钢护筒的孔口处安装定位箍，后再采用履带式振动锤将内钢护筒从定位箍内下沉并穿过外钢护筒后至密实土层或强风化层；步骤五，进行钻进成孔、清孔以及钢筋笼的安装；步骤六，灌注混凝土及起拔内钢护筒和外钢护筒；本发明与现有技术相比，提高了高回填区域内旋挖桩施工效率，提高了桩基础的加工质量以及经济效益。
Rotary excavating pile foundation double-steel-casing construction method
The invention discloses a rotary excavating pile foundation double-steel-casing construction method. The rotary excavating pile foundation double-steel-casing construction method comprises the following steps that step 1, positioning and setting-out are constructed on site according to a construction drawing, a measuring grid is established, and points are measured and set out; step 2, after the position is adjusted, a guide hole is excavated; step 3, whether the pile position is consistent with the center of an outer steel casing or not is checked, the periphery of the outer steel casing is filled with soil and tamped after correction, and the outer steel casing is sunken to the height H1 through a crawler-type vibratory hammer; step 4, a positioning hoop is installed at an orifice of theouter steel casing, and then the crawler-type vibratory hammer is adopted to enable an inner steel casing to sink from the interior of the positioning hoop and penetrate through the outer steel casing to reach a dense soil layer or a strong weathered layer; step 5, a hole is formed through drilling, the hole is cleaned, and a reinforcement cage is installed; and step 6, concrete is poured, and the inner steel casing and the outer steel casing are pulled out. Compared with the prior art, the construction efficiency of the rotary excavating pile in the high backfill area is improved, and the processing quality and economic benefits of a pile foundation are improved.
本发明公开了一种旋挖桩基双钢护筒施工方法，包括以下步骤：步骤一，根据施工图在现场定位放线，建立测量网格，进行测量放点；步骤二，调整好位置后，开挖引孔；步骤三，校核桩位与外钢护筒中心是否一致，校正后外钢护筒外围填土夯实，采用履带式振动锤下沉外钢护筒至H1高度后；步骤四，在外钢护筒的孔口处安装定位箍，后再采用履带式振动锤将内钢护筒从定位箍内下沉并穿过外钢护筒后至密实土层或强风化层；步骤五，进行钻进成孔、清孔以及钢筋笼的安装；步骤六，灌注混凝土及起拔内钢护筒和外钢护筒；本发明与现有技术相比，提高了高回填区域内旋挖桩施工效率，提高了桩基础的加工质量以及经济效益。
Rotary excavating pile foundation double-steel-casing construction method
一种旋挖桩基双钢护筒施工方法
HUANG ZHANGJIAN (Autor:in)
15.01.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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