强夯施工夯击击数每遍每夯点的夯击击数应按现场试夯得到的夯击击数和夯沉量关系曲线确定,且应同时满足下列条件：
1) The number of tamping shocks per time at each tamping point in dynamic compaction construction shall be determined according to the relationship curve between tamping shocks and tamping settlement obtained from on-site test tamping, and the following conditions shall be satisfied at the same time:
a.最后两击的夯沉量不宜大于下列数值:当单击夯击能小于4000kN·m时为50mm;当单击夯击能为4000~6000kN·m时为100m;当单击夯击能大于6000kN·m时为200mm:
A. The final two-hit ramming settlement should not be greater than the following values: 50 m m when the click ramming energy is less than 4000 kN.m; 100 m when the click ramming energy is 4000-6000 kN.m; and 200 mm when the click ramming energy is more than 6000 kN.m:
b.夯坑周围地面不应发生过大隆起;
B. The ground around the ramming pit should not be heavily raised.
C.不因夯坑过深而发生起锤困难
C. Hammering difficulty does not occur due to too deep ramming pit
总之,各夯击点的夯击数缆接地箱 隔离墩模具 保定电动门 铜狮子 u型槽模具 SMT贴片焊接 收费岛模具 水泥井模具,应使土体竖向压缩最大,而侧向位移最小为原则,一般为4~10击2)夯击遍数夯击遍数应根据地基土的性质和平均夯击能确定。可采用点夯2~3遍对于渗透性较差的细颗粒土,必要时夯击遍数可适当增加。最后冉以低能量淸夯2遍,满夯可采用轻锤或低落距锤多次夯击,锤印彼此搭接。
In a word, the tamping number of each tamping point should maximize the vertical compression of the soil, and the minimum lateral displacement is the principle. Generally, the tamping number of times should be determined according to the nature of the foundation soil and the average tamping energy. Point tamping 2-3 times can be used for fine-grained soils with poor permeability. If necessary, the number of tamping times can be increased appropriately. Lastly, tamping with low energy twice, full tamping can be tampered with light hammer or low drop distance hammer for many times, and hammer prints overlap with each other.