CAJ | 학술논문

在高烈度地震区，地震作用对抗滑桩的影响并没有引起人们的足够重视，这将大大降低工程运行可靠度。针对地震区抗滑桩设计，对影响锚固深度的容许侧应力进行地震角修正，建立地震作用下的抗滑桩侧应力计算模型，确定承载能力极限状态下的侧应力功能函数，把桩周岩土介质参数、桩体结构强度和地震作用等作为随机变量，采用一次二阶矩法，进行可靠性指标计算。通过工程实例，得出在一定锚固深度下，岩土参数变异性、考虑和不考虑地震作用条件下对抗滑桩可靠度的影响，获得高烈度地震区抗滑桩设计中的锚固深度取值标准，并提出抗滑桩设计以可靠度法设计指导定值法设计的新思路。
재고열도지진구，지진작용대항활장적영향병몰유인기인문적족구중시，저장대대강저공정운행가고도。침대지진구항활장설계，대영향묘고심도적용허측응력진행지진각수정，건입지진작용하적항활장측응력계산모형，학정승재능력겁한상태하적측응력공능함수，파장주암토개질삼수、장체결구강도화지진작용등작위수궤변량，채용일차이계구법，진행가고성지표계산。통과공정실례，득출재일정묘고심도하，암토삼수변이성、고필화불고필지진작용조건하대항활장가고도적영향，획득고열도지진구항활장설계중적묘고심도취치표준，병제출항활장설계이가고도법설계지도정치법설계적신사로。
The effect of seismic action on anti-sliding pile in high-intensity earthquake region has not attracted enough attentions, which will reduce the reliability in project operation greatly. In connection with the design of anti-sliding pile in earthquake region, seismic angle correction is carried out against the allowable lateral stress affecting the anchoring depth to establish the model calculating lateral stress on anti-sliding pile under seismic action and determine the function of the lateral stress in the state of ultimate bearing capacity. Taking parameters of geo-materials surrounding pile, structural strength of pile body and seismic action as random variables, and by use of FOSM method, the index of reliability is calculated. Through case study, under certain anchoring depth, either the effect of soil parameter's variety or the conditions with or without the consideration of seismic action on anti-sliding pile's reliability can be known, the valuing standard of anchoring depth in the design of anti-sliding pile in high-intensity earthquake region can be obtained, and the new idea taking reliability as the guidance of valuation in design of anti-sliding pile is proposed.