A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method for spin digging cast-in-place pile under karst landform
The invention discloses a construction method for a spin digging cast-in-place pile under a karst landform. The method comprises the following steps that aperture, inter-pile spacing and arranging spacing requirements are designed according to foundation pit support, combining a construction site, construction is conducted before pile arranging, construction is conducted after pile arranging, thesequence of pile driving construction starts from two sides of a row of piles to the middle, at the same time, all pile holes are excavated in a pile skipping mode, middle spaced construction is conducted, after pile body concrete is poured, adjacent hole piles are subjected to pile skipping construction until pile driving hole forming is completed; the length of a steel casing is selected according to the site soil excavation condition, the casing is buried, rotating, soil cutting, lifting and soil unloading of a drilling bucket are conducted in a repeated and cycled mode until a hole are formed; hole formation inspection and hole cleaning are conducted, a reinforcement cage is manufactured, the reinforcement cage is hung and placed into the hole, a sound measuring pipe is firmly positioned, and is guaranteed to be vertical; and a pile body is subjected to concrete pouring, the height of concrete surface is detected, and after the concrete is poured, a protective cylinder is pulled out. The method is low in cost and good in hole forming quality.
本发明公开了一种喀斯特地貌下旋挖灌注桩施工方法，包括以下步骤：根据基坑支护设计孔径、桩间间距、排距要求，结合施工现场，先施工后排桩，后施工前排桩；打桩顺序从一排桩的两侧向中间施工，同时所有桩孔跳桩开挖，中间间隔施工，待桩身混凝土浇筑后，再跳桩施工相邻孔桩，直到打桩成孔完成；根据现场开挖土质情况选择钢护筒长度，埋设护筒，通过钻斗的旋转、削土、提升、卸土，反复循环直至成孔；成孔检查，清孔，制作带钢筋笼，将钢筋笼吊放入孔，声测管定位牢固并保证垂直；桩身灌注混凝土；探测混凝土面高度，混凝土灌注完毕，拔出护筒；该方法成本低、成孔质量好。
Construction method for spin digging cast-in-place pile under karst landform
The invention discloses a construction method for a spin digging cast-in-place pile under a karst landform. The method comprises the following steps that aperture, inter-pile spacing and arranging spacing requirements are designed according to foundation pit support, combining a construction site, construction is conducted before pile arranging, construction is conducted after pile arranging, thesequence of pile driving construction starts from two sides of a row of piles to the middle, at the same time, all pile holes are excavated in a pile skipping mode, middle spaced construction is conducted, after pile body concrete is poured, adjacent hole piles are subjected to pile skipping construction until pile driving hole forming is completed; the length of a steel casing is selected according to the site soil excavation condition, the casing is buried, rotating, soil cutting, lifting and soil unloading of a drilling bucket are conducted in a repeated and cycled mode until a hole are formed; hole formation inspection and hole cleaning are conducted, a reinforcement cage is manufactured, the reinforcement cage is hung and placed into the hole, a sound measuring pipe is firmly positioned, and is guaranteed to be vertical; and a pile body is subjected to concrete pouring, the height of concrete surface is detected, and after the concrete is poured, a protective cylinder is pulled out. The method is low in cost and good in hole forming quality.
本发明公开了一种喀斯特地貌下旋挖灌注桩施工方法，包括以下步骤：根据基坑支护设计孔径、桩间间距、排距要求，结合施工现场，先施工后排桩，后施工前排桩；打桩顺序从一排桩的两侧向中间施工，同时所有桩孔跳桩开挖，中间间隔施工，待桩身混凝土浇筑后，再跳桩施工相邻孔桩，直到打桩成孔完成；根据现场开挖土质情况选择钢护筒长度，埋设护筒，通过钻斗的旋转、削土、提升、卸土，反复循环直至成孔；成孔检查，清孔，制作带钢筋笼，将钢筋笼吊放入孔，声测管定位牢固并保证垂直；桩身灌注混凝土；探测混凝土面高度，混凝土灌注完毕，拔出护筒；该方法成本低、成孔质量好。
Construction method for spin digging cast-in-place pile under karst landform
一种喀斯特地貌下旋挖灌注桩施工方法
TIAN JIUYING (author) / LYU ZHENGKUI (author) / WANG ZHAOHUI (author) / CHENG YINGJUN (author) / DU SHASHA (author) / CHEN CONGJUN (author) / YAN XIAOMIN (author) / WANG MEIJING (author)
2020-07-10
Patent
Electronic Resource
Chinese
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