| 曲宏略,张哲,李兆龙,陈爽,王希科,马耀先.基于FLAC3D的桩板结构在堆积体边坡中的地震响应评价[J].河北工程大学自然版,2022,39(1):65-71 |
| 基于FLAC3D的桩板结构在堆积体边坡中的地震响应评价 |
| Seismic Response Evaluation of Pile-Slab Structure in Deposit Slope Based on FLAC3D |
| 投稿时间：2021-10-27 |
| DOI：10.3969/j.issn.1673-9469.2022.01.010 |
| 中文关键词: 堆积体边坡 地震响应 桩板墙 参数影响 |
| 英文关键词:deposit slope seismic response sheet pile wall parameter influence |
| 基金项目:国家自然科学基金资助项目(41602332);中铁二十三局集团研究项目(CR2301-GL-CMCB7B-2021-KY-01);西南石油大学青年科技创新基金(2018CXTD02);中国三峡库区生态环境工程研究中心基金(KF2018-01) |
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| 中文摘要: |
| 针对桩板结构的稳定性问题,采用FLAC3D仿真计算软件,研究不同参数下桩板墙在堆积体边坡中的地震响应,并对桩板结构的抗震效果进行评价。研究结果表明:结构动力特性对抗震效果影响显著,在坡体自振频率附近地震波对坡体会产生更大伤害;在地震基本烈度VII、VIII度区,桩板墙可有效起到抗震作用,但在地震基本烈度IX度区,桩身位移超过桩身10%,不能满足抗滑需要;桩间距的不同,直接影响桩身土压力的分布,在一定范围内,桩背土压力会随着桩间距的减小而减小;滑体的参数(c、φ)对抗滑桩桩背土压力影响小于桩身位移;工程中,应综合考虑多种因素对桩板结构进行设计,避免造成资源浪费。 |
| 英文摘要: |
| Focusing on the stability of the pile-slab structure, FLAC3D simulation calculation software was used to study the seismic response of pile-slab wall in the deposit slope under different parameters by numerical analysis method, and the seismic effect of pile-slab structure was evaluated. The results show that the dynamic characteristics of the structure have a significant effect on the seismic effect, and the seismic wave near the natural frequency of the slope has a greater damage to the slope; in the seismic intensity areas of VⅡ and VⅢ, the sheet pile wall can effectively play an anti-seismic role, but in the seismic intensity area of IX, the displacement of the pile exceeds 10 % of the pile length, which cannot meet the needs of anti-sliding; the difference of pile spacing directly affects the distribution of soil pressure on pile and in a certain range, the soil pressure on pile back will decrease with the decrease of pile spacing; influence of parameters of sliding body on back earth pressure of anti-slide pile is less than pile displacement; various factors should be considered in the design of pile - slab structure to avoid waste of resources. |
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