单桩极限承载力与管桩的弹性压缩变形

Ultimate Bearing Capacity of Single Pile and Elastic:Shortening Deformation of Pile

对历年来我国桩基国家标准、桩基行业标准以及广东省标准中用单桩竖向静载试验法来确定极限承载力与桩顶总沉降量的关系相关规定进行了归纳,介绍了澳门使用的欧洲标准计算公式,指出我国规范虽已提出考虑桩长、桩径的因素,但不够具体,而各规范又不统一。对各种规格管桩在几种荷载下的弹性压缩量理论值进行了计算,说明了考虑桩顶沉降时桩长的因素不容忽视,规范需要具体化。澳门使用的公式考虑的因素明确且具体,可作借鉴。

Using vertical static load experiment method of single pile to determine the relationship between ultimate beating capacity and the total settlement of the pile top from our national standards, pile foundation industry standards, and standard of Guangdong province is summarized over the years, and the related calculation formula in Macao using European standard is introduced. It＇s pointed out that our country standards have considered the factors of pile length and pile diameter, but requirements are not enough specific, and the specifications are not unified. By calculating the theoretical value of the elastic compression of all kinds of piles under several loading, it＇s explained that the pile length cannot be ignored considering the settlement of pile top. The Macao calculation formula from European standard can be a reference because of clear and specific requirements.