Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for calculating bearing capacity characteristic value at bottom surface of bonded pile composite foundation
The invention discloses a method for calculating a bearing capacity characteristic value at the bottom surface of a bonded pile composite foundation, which comprises the following steps of: for the bonded pile composite foundation, starting from the ground, determining a single pile vertical bearing capacity characteristic value Ra1 according to pile periphery soil properties and pile strength, and obtaining a replacement rate m of piles according to the arrangement form and spacing of the piles; and calculating the bearing capacity of the composite foundation by adopting a standard method, and performing depth correction according to the foundation burial depth to obtain the bearing capacity at the bottom surface of the foundation. In addition, the bearing capacity of the piles and the bearing capacity of soil between the piles on the bottom face of the foundation are calculated respectively, the bearing capacity of the soil between the piles after depth and width correction on the bottom face of the foundation is considered, and a single-pile bearing capacity characteristic value Ra2 is obtained through the pile periphery soil layer property and the pile body strength from the bottom face of the foundation; a composite foundation bearing capacity calculation formula is directly adopted to calculate a bearing capacity characteristic value at the bottom surface of the foundation without correcting the bearing capacity characteristic value. The invention provides a more reasonable calculation method for the characteristic value of the bearing capacity of the bottom surface of the composite foundation.
本发明公开了一种粘结桩复合地基基础底面处承载力特征值计算方法，其实施过程如下：对于粘结桩复合地基，自地面起算，由桩周土体性质及桩体强度确定单桩竖向承载力特征值Ra1，由桩的布置形式及间距，可得桩的置换率m，采用规范方法计算复合地基承载力，根据基础埋深对其进行深度修正得到基础底面处的承载力。除此之外，分别计算基础底面处桩和桩间土的承载力，考虑基础底面处经深宽修正后的桩间土承载力，通过自基础底面起算的桩周土层性质和桩体强度得到单桩承载力特征值Ra2，直接采用复合地基承载力计算公式计算基础底面处承载力特征值，而不再对其进行修正。本发明能为复合地基基础底面处承载力特征值提供一种更加合理的计算方法。
Method for calculating bearing capacity characteristic value at bottom surface of bonded pile composite foundation
The invention discloses a method for calculating a bearing capacity characteristic value at the bottom surface of a bonded pile composite foundation, which comprises the following steps of: for the bonded pile composite foundation, starting from the ground, determining a single pile vertical bearing capacity characteristic value Ra1 according to pile periphery soil properties and pile strength, and obtaining a replacement rate m of piles according to the arrangement form and spacing of the piles; and calculating the bearing capacity of the composite foundation by adopting a standard method, and performing depth correction according to the foundation burial depth to obtain the bearing capacity at the bottom surface of the foundation. In addition, the bearing capacity of the piles and the bearing capacity of soil between the piles on the bottom face of the foundation are calculated respectively, the bearing capacity of the soil between the piles after depth and width correction on the bottom face of the foundation is considered, and a single-pile bearing capacity characteristic value Ra2 is obtained through the pile periphery soil layer property and the pile body strength from the bottom face of the foundation; a composite foundation bearing capacity calculation formula is directly adopted to calculate a bearing capacity characteristic value at the bottom surface of the foundation without correcting the bearing capacity characteristic value. The invention provides a more reasonable calculation method for the characteristic value of the bearing capacity of the bottom surface of the composite foundation.
本发明公开了一种粘结桩复合地基基础底面处承载力特征值计算方法，其实施过程如下：对于粘结桩复合地基，自地面起算，由桩周土体性质及桩体强度确定单桩竖向承载力特征值Ra1，由桩的布置形式及间距，可得桩的置换率m，采用规范方法计算复合地基承载力，根据基础埋深对其进行深度修正得到基础底面处的承载力。除此之外，分别计算基础底面处桩和桩间土的承载力，考虑基础底面处经深宽修正后的桩间土承载力，通过自基础底面起算的桩周土层性质和桩体强度得到单桩承载力特征值Ra2，直接采用复合地基承载力计算公式计算基础底面处承载力特征值，而不再对其进行修正。本发明能为复合地基基础底面处承载力特征值提供一种更加合理的计算方法。
Method for calculating bearing capacity characteristic value at bottom surface of bonded pile composite foundation
一种粘结桩复合地基基础底面处承载力特征值计算方法
SHEN ZHIPING (Autor:in) / LIU HUAN (Autor:in) / FU JUNYI (Autor:in) / SUN XIUDONG (Autor:in) / LIU HUI (Autor:in) / PENG YOUXIAN (Autor:in) / YIN LINLI (Autor:in)
30.04.2021
Patent
Elektronische Ressource
Chinesisch
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