Floor paint construction share of ground subsidence reason analysis and processing

Floor paint floor sinking cause analysis and treatment methods of construction share

poor geological condition is the objective cause of indoor floor area uneven settlement, the design of ground subsidence underestimated, adopt reasonable measures of foundation reinforcement is caused by the ground large area of the main causes of uneven settlement. Construction, low floor concrete strength, concrete cushion slants thin layer and reduce the crack resistance of concrete ground, make its early cracking. Poor geological conditions and objective cause of outdoor surface subsidence, backfill thicker and backfill to outdoor floor construction time is short outdoor surface subsidence of subjective reasons, backfill incompletely is further exacerbated the outdoor surface subsidence.

deal:

( 1) Chisel in addition to all the cracking and settling larger floor, USES the pile for foundation reinforcement, concrete floor in accordance with national standards.

( 2) Demolition of built in cracking, subsidence of ground level ground all walls and towering buildings, after waiting for the casting floor in masonry wall, to crack the wall and the floor is not directly connected using double-sided reinforcement fabric to reinforce cement mortar.

( 3) After the settlement of foundation treatment and stability of water seepage roofing waterproof, redo and seepage parts structure surface besmear brushs infiltration resistance, rust agent, floor plate cracking serious place, appropriate USES grouting method to repair cracks. The structure reinforcement should try not to damage the original structure component, ground level ground foundation treatment scheme of optimal selection of stability; (2) deformation; (3) penetration problem. For the purpose of foundation treatment is to improve the bearing capacity of soft ground, reduce the weak compressibility of soil, reduce the foundation settlement and uneven settlement. Foundation treatment rule to follow is: advanced technology, reasonable economy, safety, ensure the quality of structure of floor, floor board directly under ground load, the plate connected to the main structure, floor board also adopts the same as the main structure type, the basis of the whole deformation are the same.

the foundation treatment method are many, reasonable choice is very important, not only affect the foundation treatment effect, but also affect the size of the engineering investment. When the choice, should consider site engineering geological and hydrogeological conditions, building on the foundation, structure type and foundation forms, ambient conditions, material supply, construction conditions, construction period and other factors, through technical and economic index selection merit after comparative analysis. To ensure the engineering quality, speed up the construction and investment saving.

common foundation treatment methods are: in bolus layer method, cement-soil mixing method, dynamic compaction method, the method of lime-soil compaction pile, soil compaction method, the preloading method, high pressure injection ( Pressure) Grouting method, sand pile method, cement fly-ash gravel pile and lime pile method, etc. [ 41. When dynamic compaction method and treatment of saturated soft clay foundation easy generation & other; Rubber soil & throughout; Phenomenon, construction noise, and the soil extrusion surrounding roads, houses, or additional subsidence of lateral displacement. Method of lime-soil compaction pile and the soil compaction method does not apply to saturated cohesive soil. Preloading method needed for a long time, the general construction period is 4 ~ 5 ~ - Month. Pressure grouting process is bad, the actual construction quality is not easy to control, test results is difficult to guarantee. Sand pile method, high cost and construction noise is larger, the increase of composite foundation bearing capacity is small, after the completion settlement is not easy to control.