现浇X形混凝土桩复合地基设计计算方法

he soft soil universally exists in coastal area and mainland lakelands, so the settlement deformation is more important in construction of highway, high-speed railway and municipal road. The cast-in-place X-section concrete pile technique is a new patent pile technique which is work out by geohohai, basing on a wide range of engineering practices and successfully applying in municipal and highway construction in soft ground .In order to make X-section pile better used in engineering practice ,take Nanjing northbound sewage treatment plants as the background, derived the X-section pile's perimeter and area formulas, given the X-section pile composite foundation bearing capacity and settlement calculation method ,also introduced a method of checking the strength of concrete pile ,providing an engineering practice for future reference.