CAJ | 학술논문

以巩义市某住宅小区场地为研究背景，分别建立等截面灌注桩和扩底灌注桩的单桩有限元模型并计算、讨论单桩受力性能。对比同一桩型、不同桩身截面尺寸和不同桩型、同一截面尺寸下的桩端截面应力分布特征，结果表明，扩底端能够优化桩端截面受力特性，桩身长度和直径比值在（25，30）区间内时桩端截面受力更趋合理；从而可根据基桩直径选取适宜的桩身长度，然后根据具体工程地质资料选择合适的桩端持力层。
이공의시모주택소구장지위연구배경，분별건립등절면관주장화확저관주장적단장유한원모형병계산、토론단장수력성능。대비동일장형、불동장신절면척촌화불동장형、동일절면척촌하적장단절면응력분포특정，결과표명，확저단능구우화장단절면수력특성，장신장도화직경비치재（25，30）구간내시장단절면수력경추합리；종이가근거기장직경선취괄의적장신장도，연후근거구체공정지질자료선택합괄적장단지력층。
In the context of the geological conditions of a residential in Gongyi city, different finite element models of cast-in-situ piles with uniform cross-section and identical cross-section were established for finite element calculations. This paper compared with the pile section stress distribution in two cases, the same type of pile but different cross-section size and different types of pile but the same cross-section size. The results show that the expansion of the bottom of the pile cross-section can optimize the force characteristics. When the pile diameter ratio is between 25 and 30, the mechanical behavior of the bottom cross-section is more reasonable. According to pile diameter, the appropriate length and pile bearing stratum can be selected.