CAJ | 학술논문

基于PLAXIS3D建立板桩墙基坑支护数值模型，并展开系列数值试验，研究多层地基下板桩墙支护桩身内力和变形情况，得出了板桩的变形、剪应力和桩周土压力分布，验证了应用PLAXIS3D求解基坑支护的精确性和可靠性。研究结果表明，土体硬化模型能够模拟不同土层的真实特性，模拟结果与理论值具有较好的一致性。基坑开挖、支护全过程是初始应力场破坏，新平衡应力场形成的过程。板桩墙支护结构最大水平变形表现为中间大、两端小。模拟结果可以为工程设计与施工提供参考。
기우PLAXIS3D건립판장장기갱지호수치모형，병전개계렬수치시험，연구다층지기하판장장지호장신내력화변형정황，득출료판장적변형、전응력화장주토압력분포，험증료응용PLAXIS3D구해기갱지호적정학성화가고성。연구결과표명，토체경화모형능구모의불동토층적진실특성，모의결과여이론치구유교호적일치성。기갱개알、지호전과정시초시응력장파배，신평형응력장형성적과정。판장장지호결구최대수평변형표현위중간대、량단소。모의결과가이위공정설계여시공제공삼고。
A numerical code PLAXIS3D was used to investigate the sheet-pile walls supporting model. The internal force and deformation of sheet-pile under the multi-layered soils were simulated. The deformation, shear force and soil pressure distribution of the sheet-pile were obtained. The results show that the harding soil model can show the different characters of multi-layered soils;There is a good agreement between the simulation results and the theoretical values. The excavation and supporting of foundation pit is a process that the initial stress field is destroyed and the new stress field is formed. The results can offer some references for design and construction of deep foundation pit engineering.