MONITORING STUDY OF SOFT GROUND EXCAVATION IN A RECTANGULAR DEEP FOUNDATION PIT
This paper studies the rectangular pit geometry effect and the influence of pit notch on pit deformation characteristics, taking the rectangular deep foundation pit project of an extension project in Shantou as the case, the geometric effect of rectangular foundation pit on the surface settlement around the foundation pit and the horizontal displacement of the enclosing piles is studied through the field measurement data, and the deformation pattern and influencing factors of the foundation pit in time and space are analysed. The results show surface settlement in-creased with the pit excavation conditions with downward settlement deformation dominating. Horizontal displace-ment of the enclosing piles increases with time, which shows a parabolic deformation pattern of increasing and then decreasing along the direction of the depth of the enclosing piles' burial with a section of obvious bulge. Due to the influence of geometric effects of rectangular pit corners, rectangular pit corners are weaker than that of others, result-ing in lateral displacement of the perimeter piles and surface settlement is more significant at the corners. The re-sults of the study may provide the reference for the excavation and design of the same type of pit.
rectangular deep foundation pithorizontal displacement of the retaining pilegeometric effect
万方数据
维普
