A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for measuring settlement amount of foundation
The invention discloses a method for measuring the settlement amount of a foundation. The method comprises the following steps of performing a pore pressure static sounding test on foundation soil in a target area on site to obtain layers of a foundation soil body and conical tip resistance and pore water pressure in each layer of soil body; further obtaining the conical tip resistance corrected by pore pressure; according to the corrected conical tip resistance, obtaining compression modulus of each layer of the soil body under different pressures; according to the filling process of the target area, calculating change process data of additional soil pressure on the middle surface of each soil layer of the foundation along with time; calculating the settlement amount of each layer of the soil body under the additional pressure according to the compression modulus and the data of the change process of the compression modulus along with the pressure; and adding the calculated settlement amount of the soil layers to obtain the total settlement amount of the foundation in the target area. Compared with soil sampling for indoor test, the method has the advantages that disturbance to a soil sample is reduced, the condition for acquiring the soil parameters is consistent with actual condition, so that the value of soil parameters is more real, and the accuracy of the obtained foundation settlement amount is higher.
本发明公开了一种地基沉降量的测量方法，在现场进行目标区域地基土的孔压静力触探测试，获得地基土体的分层及各层土体中的锥尖阻力、孔隙水压力；进而得出经孔压修正的锥尖阻力；根据修正的锥尖阻力，得出各层土体在不同压力下的压缩模量；根据目标区域的填筑过程，计算出地基各土层中面上的附加土压力随时间的变化过程数据；根据压缩模量及其随压力的变化过程数据，计算出每层土体在附加压力下的沉降量；将各土层的计算沉降量相加，得到目标区域地基的总沉降量。该方法相比于取土进行室内试验，既减少了对土样的扰动，又能保证获取土体参数时的条件与实际一致，从而使土体参数取值更真实，得出的地基沉降量准确度更高。
Method for measuring settlement amount of foundation
The invention discloses a method for measuring the settlement amount of a foundation. The method comprises the following steps of performing a pore pressure static sounding test on foundation soil in a target area on site to obtain layers of a foundation soil body and conical tip resistance and pore water pressure in each layer of soil body; further obtaining the conical tip resistance corrected by pore pressure; according to the corrected conical tip resistance, obtaining compression modulus of each layer of the soil body under different pressures; according to the filling process of the target area, calculating change process data of additional soil pressure on the middle surface of each soil layer of the foundation along with time; calculating the settlement amount of each layer of the soil body under the additional pressure according to the compression modulus and the data of the change process of the compression modulus along with the pressure; and adding the calculated settlement amount of the soil layers to obtain the total settlement amount of the foundation in the target area. Compared with soil sampling for indoor test, the method has the advantages that disturbance to a soil sample is reduced, the condition for acquiring the soil parameters is consistent with actual condition, so that the value of soil parameters is more real, and the accuracy of the obtained foundation settlement amount is higher.
本发明公开了一种地基沉降量的测量方法，在现场进行目标区域地基土的孔压静力触探测试，获得地基土体的分层及各层土体中的锥尖阻力、孔隙水压力；进而得出经孔压修正的锥尖阻力；根据修正的锥尖阻力，得出各层土体在不同压力下的压缩模量；根据目标区域的填筑过程，计算出地基各土层中面上的附加土压力随时间的变化过程数据；根据压缩模量及其随压力的变化过程数据，计算出每层土体在附加压力下的沉降量；将各土层的计算沉降量相加，得到目标区域地基的总沉降量。该方法相比于取土进行室内试验，既减少了对土样的扰动，又能保证获取土体参数时的条件与实际一致，从而使土体参数取值更真实，得出的地基沉降量准确度更高。
Method for measuring settlement amount of foundation
一种地基沉降量的测量方法
TIAN XIAOGE (author) / YU SHUI (author) / HU FUGUI (author) / REN QUAN (author) / HU TAO (author) / WANG XIAOFEI (author) / LI GUANGYAO (author) / HU HONGLI (author) / GUO CHANGHUI (author) / LU XUERONG (author)
2021-11-26
Patent
Electronic Resource
Chinese
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