CAJ | 학술논문

基坑工程实践中,经常遇到相邻基坑土条土压力如何计算的问题,现行基坑规范尚没有计算方法.通过理论探索和工程实践,对前、后期的基坑支护型式进行了归类和组合,提出了相临基坑宽度的确定原则;提出了建立在库仑土压力理论基础之上的简化计算方法--叠加法,推导并给出了非黏性土和黏性土在不同坡率和地面分布有荷载条件下主动土压力系数和土压力的计算公式,并提出了临界宽度的概念和土条土压力折减系数的计算公式.利用所提出的叠加法、临界宽度的概念和土条土压力折减系数的计算公式,可以简捷地计算不同土层、不同坡率和地面荷载条件下的土条土压力合力及土压力强度.工程实践表明,该方法概念清晰、理论依据充分、计算公式简便,以此设计的基坑支护结构安全合理,可供类似基坑支护工程设计参考.
기갱공정실천중,경상우도상린기갱토조토압력여하계산적문제,현행기갱규범상몰유계산방법.통과이론탐색화공정실천,대전、후기적기갱지호형식진행료귀류화조합,제출료상림기갱관도적학정원칙;제출료건립재고륜토압력이론기출지상적간화계산방법--첩가법,추도병급출료비점성토화점성토재불동파솔화지면분포유하재조건하주동토압력계수화토압력적계산공식,병제출료림계관도적개념화토조토압력절감계수적계산공식.이용소제출적첩가법、림계관도적개념화토조토압력절감계수적계산공식,가이간첩지계산불동토층、불동파솔화지면하재조건하적토조토압력합력급토압력강도.공정실천표명,해방법개념청석、이론의거충분、계산공식간편,이차설계적기갱지호결구안전합리,가공유사기갱지호공정설계삼고.
The Problem of how to calculate the earth pressure for the earth-strip neighbouring excavations is run against frequently in excavation engineering practice; but there is no calculation method in the existing criterion of excavation for the moment. First, the retaining and protection forms between neighbouring excavations are classified and put together, the affirming principle of the width between two excavations is put forward; then, the superposition method on Coulomb's earth pressure theory is presented; and the calculation formulas of the active earth pressure coefficient and earth pressure are derived and presented for clay and non-clay under differrent gradients and ground load, and the idea of the critical width and the calculation formula of reducing coefficient of the earth pressure of the earth-strip are also presented. The total and distributing earth pressure of earth-strip for different soils, different gradients and ground load can be calculated simply by the superposition method, the idea of the critical width and the calculation formula of reducing coefficient of the earth pressure of the earth-strip. Finally, two engineering examples are given to show that the retaining and protection structures generated by the method and the formulas are safe and rational; the method and the formulas can be for reference by similar excavation engineering.