What should I do about loose foundation foundations? For everyone to answer questions and solve problems:

1. composite foundation method: soil mixing piles, powder spray piles, rubble piles, etc.; the disadvantage is that the cost is higher.

2. drainage consolidation method

(1) plastic drainage board joint pile load: long construction period, the effect is not ideal

(2) plastic drainage board joint vacuum pre-pressure: after 90 days, the effect is easy to control, low cost

(3) Strong tamping method: disadvantages: quality is not controllable, easy to form "spring soil".

(4) Vacuum pre-pressurization of non-drained sand bedding layer: new method, short construction period, low cost One-third of the cost than the joint vacuum pre-pressurization of plastic drainage boards, reliable results.