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详细分析关于强夯施工上的作用以及影响

网址:http://www.sddhfjx.cn/   发布日期:2021-04-25 关注次数:
强夯施工主要是通过利用土压力计观测夯墩和墩间土在加载过程中所承受的士压力变化情况,土压力测试中荷载已包括承压板、钢梁的重量。
Dynamic compaction construction is mainly through the use of earth pressure gauge to observe the change of taxi pressure on the ramming pier and the soil between the piers in the loading process. The load in the earth pressure test has included the weight of bearing plate and steel beam.
土压力计读数的平均值随着荷载的增加而不断增加,并且随着荷载的增加,两者之间的差值基本星线性规律,这说明随着荷载的增加,荷载向强夯置换墩传递的比例增大,达到了强夯加固效果的目的。所承受的土压力较大,且随着承受荷载的增大,强夯置换墩所承受的土压力逐渐增大。
The average value of earth pressure gauge reading increases with the increase of load, and with the increase of load, the difference between the two is basically linear, which shows that with the increase of load, the proportion of load transfer to dynamic compaction replacement pier increases, and the purpose of dynamic compaction reinforcement effect is achieved. With the increase of load, the earth pressure of dynamic compaction replacement pier increases gradually.
经统计分析,一、二遍主夯点所承受土压力平均值为1003kPa;三遍夯点承受土压力为388kPa;夯间土承受土压力平均值为306kPa;据置换墩及墩间土测试的土压力与相应面积的乘积,可得到墩土荷载分担比。即碎石置换墩承相荷载的60%,即载荷板所承受的荷载大部分被传递至强夯置换墩上。
According to the statistical analysis, the average earth pressure at the primary and secondary main compaction points is 1003kpa; The earth pressure at the third tamping point is 388kpa; The average value of earth pressure between rammers is 306kpa; According to the product of the earth pressure measured by the displacement pier and the soil between the piers and the corresponding area, the load sharing ratio of the pier and the soil can be obtained. That is to say, 60% of the phase load of the gravel replacement pier, that is, most of the load borne by the load plate is transferred to the dynamic compaction replacement pier.
通常在强夯施工过程中,会产生在巨大的夯击能。在此作用下,夯点中心会迅速地下沉,累积的沉降量甚至能达到1米以上,随之,夯坑四周的土体也会隆起,所以地基土体定然会产生很大的变形,地基土体一旦变形,周围建筑物必然会收到强烈的影响。
Usually in the process of dynamic compaction construction, there will be a huge impact energy. Under this action, the center of the tamping point will sink rapidly, and the accumulated settlement can even reach more than 1 meter. Then, the soil around the tamping pit will rise, so the foundation soil will certainly produce great deformation. Once the foundation soil is deformed, the surrounding buildings will be strongly affected.
强夯施工不之处在于施工会产生振动和噪声,特别是高能级的强夯施工。首先我们来分析下强夯施工对周围建筑物影响的机理。夯锤对地面施加的冲击能量,以振动波的形式在地基弹性体半空间中传播,改变着土体的物理力学性质。
The difference of dynamic compaction construction is that it will produce vibration and noise, especially in high-energy dynamic compaction construction. First of all, we analyze the mechanism of the impact of dynamic compaction construction on the surrounding buildings. The impact energy exerted by the rammer on the ground propagates in the half space of the elastic body of the foundation in the form of vibration wave, which changes the physical and mechanical properties of the soil.
以上就是关于强夯地基的相关新闻信息,更多相关的信息小编会陆续的整理发布出来,感谢您的观看。
The above is about the dynamic compaction foundation related news information, more related information will be published in succession, thank you for watching.
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