CAJ | 학술논문

　　桩锚支护结构在基坑和边坡围护工程中有着广泛的应用，设计阶段对支护结构的水平变形作出准确预测意义重大。根据国内多地基坑工程围护墙变形实测结果，建立桩锚支护结构水平位移的计算模型和计算假定，计算基坑围护墙在各外力作用下的变形，利用弹性叠加法得出桩锚支护结构围护墙深层水平位移表达式，联立锚杆刚度方程求解出其中的参数，最终得到水平位移的简化计算结果。该简化算法适用于围护墙底变形较小的桩锚支护结构计算，通过温州某基坑工程实例对比，围护墙变形计算结果与实测数据较为吻合，验证了该简化算法的适用性。
　　장묘지호결구재기갱화변파위호공정중유착엄범적응용，설계계단대지호결구적수평변형작출준학예측의의중대。근거국내다지기갱공정위호장변형실측결과，건립장묘지호결구수평위이적계산모형화계산가정，계산기갱위호장재각외력작용하적변형，이용탄성첩가법득출장묘지호결구위호장심층수평위이표체식，련립묘간강도방정구해출기중적삼수，최종득도수평위이적간화계산결과。해간화산법괄용우위호장저변형교소적장묘지호결구계산，통과온주모기갱공정실례대비，위호장변형계산결과여실측수거교위문합，험증료해간화산법적괄용성。
Pile-anchor retaining structure is widely used in foundation pit engineering and side slope engineering in many countries, especially in China and Japan. In contrast to strut, pile-anchor retaining structure has several typical features and advantages. It doesn’t occupy the internal space of the foundation pit and the project cost is much lower. With the technology of prestress, engineers can control the deformation of the retaining wall actively which is impossible in inner supporting structures. Accurate prediction of the lateral displacements of the retaining structure is very important in the design stage. An analytical evaluation model and several calculation assumptions of lateral displacements of pile-anchor retaining structure are set up according to measured data of several foundation pits from different cities in China. The deformation of the retaining wall under each external force is calculated. The expression of lateral displacement versus depth is solved by means of quasi-elastic summation; and the parameters are obtained from the stiffness equation of the anchors. The analytical evaluation of the lateral deformation curve is then completed. The simplified method is suitable for braced excavation with small displacement at the bottom of the retaining wall. The applicability of the proposed method is validated by practical engineering.