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杭州地区,位于钱塘江下游,属于近代沉积地区,大量分布着粉砂土,粉砂土做为建筑地基的持力层是可靠的,但由于多年来的自然变化以及雨水蓄积、房屋倒塌、垃圾堆积等原因,在地表面下往往堆积着大量的杂填土,厚度达1米至4米左右。杂填土成分复杂,一般含有碎砖、碎瓦、老墙土、朽木、煤渣、淤泥等,杂填土的填筑时间不同,其厚度变化很大,而且,在一般情况下,杂填土是比较松软的,有机质含量较多,承载力低,压缩性高,由于其均匀性差,要准确地测定杂填土某部分的物理力学性能是非常困难的。对杂填土地基如何处理?过去习惯的做法是将杂填土全部挖除,将基础埋置在较好的土
Hangzhou is located in the lower reaches of the Qiantang River and belongs to the modern sedimentary areas. It is reliable to distribute a large amount of silt sand and silt sand as the foundation of the building foundation. However, due to the natural changes over many years and the accumulation of rainwater, houses collapses and rubbish Accumulation and other reasons, often in the ground surface accumulation of a large number of miscellaneous fill, the thickness of 1 to 4 meters. Miscellaneous fill composition is complex, usually containing broken brick, broken tile, old wall soil, dead wood, cinder, silt, miscellaneous fill fill time varies, the thickness varies widely, and, in general, miscellaneous fill Is relatively soft, more organic content, low bearing capacity, high compressibility, because of its poor uniformity, it is very difficult to accurately determine the physical and mechanical properties of a part of miscellaneous fill. How to deal with miscellaneous fill foundations? In the past, the practice was to dig out all the miscellaneous fillings and embed the foundation in better soil