Numerical Simulation Analysis Of Pit Angle Effect Of Prefabricated Recoverable Deep Foundation Pit Supporting Structure

The hole excavated for building foundation has the obvious three-dimensional effect,in the supports and protections structure stress process can form the pit corner effect area and the plane should the variation area,the pit corner effect area hole excavated for building foundation horizontal departure change be obvious,the plane should the variation area relatively stable displacement basic consistent.At present assembles the type to be possible to recycle the deep hole excavated for building foundation to support and protect this kind of new structure,also is uses the plane in the design process to be supposed the variation area to carry on the design,has not considered the pit corner effect area displacement change the influence.In order to explore may recycle supports and protections structure pit corner effect influence this article to use the value simulation method,the research pit corner effect to may recycle the supports and protections structure the influence,may recycle the supports and protections structure with other supports and protections structural style pit corner effect same opposite sex,many kinds of factors to may recycle the supports and protections structure pit corner effect the influence scope change rule,its main research content for following several points:(1)Consults domestic and foreign to the hole excavated for building foundation pit corner effect research expert work literature,understood thoroughly the pit corner effect action mechanism,which aspect influence does have as well as the research technique to the hole excavated for building foundation,for may recycle the supports and protections structure pit corner effect research to provide the theory instruction.(2)Pair may recycle the supports and protections structure to carry on the comprehensive introduction,described this kind of supports and protections structure sophistication,the environment-protective as well as the recycling step,through the consult correlation books and the hole excavated for building foundation supports and protections design standard,makes the adjustment to the traditional supports and protections design formula,repairs and maintains including the anchor rod design formula,the guard stake design changes to the steel structure computation theory,summarizes set of uses in to be possible to recycle the supports and protections structure the design flow,will provide the theory instruction for the next this supports and protections structure supports and protections design.(3)Carries on the supports and protections project design according to the exploration geological parameter,uses the value simulation method to examine in the structure excavation process may recycle the supports and protections structure,the peripheral soil body,according to the finite element analogue result,obtains the hole excavated for building foundation in to excavate the distortion displacement which in the process produces in the hole excavated for building foundation monitor standard early warning value,has confirmed the hole excavated for building foundation security.(4)Analysis supports and protections structure horizontal departure discovered this kind of new supports and protections structure has the remarkable pit corner effect rule,may use in view of the pit corner effect influence may recycle in the supports and protections structure the unique bolt structure,through reduces the pit corner effect influence scope to the bolt loose and tight adjustment realization.(5)May know the outside factor change through the consult literature to be able to create the varying degree to the pit corner effect influence scope the change,in the actual project the hole excavated for building foundation size,the peripheral environment are various,study each kind of different factor change to be possible to recycle the supports and protections structure the pit corner effect influence,the analysis may recycle the supports and protections structure and the stake anchor supports and protections structure,the double piling supports and protections structure in the pit corner effect aspect same opposite sex,as well as the pit angle corner form,the ground load position,the hole excavated for building foundation size change pit corner effect scope change rule,will later use for this area may recycle the supports and protections structure to carry on the design to provide the three-dimensional effect reference.