CAJ | 학술논문

针对深基坑的土钉和桩锚组合式支护体系，通过数值计算分析基坑开挖过程对支护体系结构的位移、应力及稳定安全系数等的影响，分析基坑开挖过程引起的地层变形规律。对2种基坑支护方案进行计算，其一为采用2道土钉加上1道锚杆的土钉与桩锚组合式结构，其二为采用4道土钉加上3道锚杆的土钉与桩锚组合式结构。根据计算结果，对不同支护方案下基坑的支护效果进行了对比研究，进而分析支护方案的可行性，最后将现场实际采用的支护方案与实测结果进行了比较。
침대심기갱적토정화장묘조합식지호체계，통과수치계산분석기갱개알과정대지호체계결구적위이、응력급은정안전계수등적영향，분석기갱개알과정인기적지층변형규률。대2충기갱지호방안진행계산，기일위채용2도토정가상1도묘간적토정여장묘조합식결구，기이위채용4도토정가상3도묘간적토정여장묘조합식결구。근거계산결과，대불동지호방안하기갱적지호효과진행료대비연구，진이분석지호방안적가행성，최후장현장실제채용적지호방안여실측결과진행료비교。
To the combined support system of soil nailing and pile-anchor for deep excavation, by the numerical calculation with FLAC3D software, the analysis is made on the influence of excavating process to displacement, stress and stability safety factor of support system structures, as well as the laws of ground deformation caused by excavation.2 retaining schemes are considered;one is the retaining structure composted by 2 layer soil nails and 1 pile-anchor, the other one is the retaining structure composted by 4 layer soil nails and 3 pile-anchors.Based on the calculation results, comparative study is carried out on the support effects of different schemes to analyze the feasibility of the support scheme.The paper presents the comparison of support effects between the adopted scheme in the engineering and field measured results.