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美国标准是怎样确定地基承载力的？小弟现在正在做一个国外建筑的设计，但是地勘报告做了标准贯入度的实验 三轴有（无）排水的试验，给了很多试验数据，但是没有给土的承载力数值，他们的贯入度实验是这样描述的：The Standard Penetration Test (SPT) was carried out according the ASTM D1586 (1974). The blow count of the SPT was observed for 6 successive drives of sampler spoon to a penetration each of 75mm. or to a maximum of 30 blows whichever happens first. The first two drives are considered as seating drive. The number of blows for the next 4 drives is considered as the Penetration Resistance (N). A value of 30 blows per 75mm. is considered as refusal. In case the N- value reaches 60 without achieving 300mm. penetration, the SPT was stopped to avoid damaging the SPT spoon and to
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zhycht
沙发
煤矸石空心砌块
2010-05-13 19:39:13
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bxzyh
板凳
再问下，200厚的墙体，梁一般做多宽呢？如果按一般做法250的话，便会有更多地方都会露出梁线条了
2010-05-13 14:10:13
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