采用试桩验证注浆加固效果

在新回填的坑中兴建建筑物存在很多安全隐患，为提高填土密实度、均匀性和承载能力，防止地面产生过大的沉降和不均匀沉降，同时解决桩的负摩阻力问题，采用注浆加固工艺对填土进行加固，并通过在坑内、坑外进行预应力管桩试桩验证加固效果。结果表明，填土经注浆加固后的性质明显提高，采用注浆技术进行加固处理是合理的。

Using Prestressed Concrete Pipe to Test the Grouting Reinforcement Effection

There are many existing security risks of buildings in the new backfill pit. By using the grouting technologies to reinforce density,uniformity and bearing capacity, we can produce large settlement and uneven settlement in order to problem of negative skin friction of pile, and through the prestressed concrete pipe to test grouting effect in and outside the pit. The results showed that, the character of fill is improved obviously after grouting reinforcement. So, using grouting technology to treat fill is reasonable.