CAJ | 학술논문

某中学教学楼由于附近新建高层的打桩、开挖以及沉降造成教学楼向新建高层严重倾斜.该楼东部为砖混结构,基础采用条形基础,西部为框架结构,基础采用片筏基础,整体刚度较好,基础持力层为软粘土,根据以上情况制定了注浆、掏土结合的纠偏方案.即首先采用注浆加固、顶升多沉部位,制止基础继续下沉,再用掏土法迫降少沉部位,沉降达到规定指标以后再注浆稳定沉降.在纠偏过程中,设置严密的监测系统.经过以上纠偏施工,大约一个月的时间,使该教学楼不均匀沉降值控制在允许范围之内.
모중학교학루유우부근신건고층적타장、개알이급침강조성교학루향신건고층엄중경사.해루동부위전혼결구,기출채용조형기출,서부위광가결구,기출채용편벌기출,정체강도교호,기출지력층위연점토,근거이상정황제정료주장、도토결합적규편방안.즉수선채용주장가고、정승다침부위,제지기출계속하침,재용도토법박강소침부위,침강체도규정지표이후재주장은정침강.재규편과정중,설치엄밀적감측계통.경과이상규편시공,대약일개월적시간,사해교학루불균균침강치공제재윤허범위지내.
Caused by the pile driving, foundation pit digging and settlement of a tall new building in its vicinity,a teaching building of a high school was seriously inclined. The eastern part of the teaching building is of masonry structure with strip foundation, and the western part is of frame structure with mat foundation, which is of better integral stiffness. The bearing layer is soft soil. According to the conditions above, the inclination rectifying approach adopted is grouting combined with subsoil extracting. Grouting was first employed to reinforce and uplift the over settled parts, which was followed by subsoil extracting to cause further settlement in the relatively less settled part. Once the settlement meets the specification, regrouting was performed to stop and stablize the settling tendency. On the procession of rectification, a monitoring system was strictly installed. The rectification proceeded for about one month, and the inclination and the differential settlement of the teaching building have been controlled within the range of requirement.