摘要
为研究全直桩码头结构的抗震能力,以江苏某全直桩码头结构段为例,采用SAP2000软件对结构进行了纵向静力弹塑性分析,讨论了不同桩基刚度等因素对Pushover分析结果的影响,得到了荷载因子-顶点位移关系曲线、桩身高度-纵向位移曲线、码头结构的屈服次序和位置及桩基内力等规律。结果表明,桩径的增大可提高结构所能承担的极限水平荷载;纵向水平地震作用下桩基以纵向受弯破坏为主,桩基纵向弯矩由海侧向陆侧逐渐增大;塑性铰一般由陆侧向海侧发展,同一排桩沿纵向由一端向另一端发展,同一桩基由底端向顶端发展。
In order to study the seismic performance of all-vertical-piled wharf, a structural segment of all-vertical- piled wharf in Jiangsu Province was studied by using longitudinal pushover analysis with SAP2000. The effects of differ- ent stiffness of pile foundation on the results of the pushover analysis are discussed. And then it obtains the relationships between loading factor and top displacement, between pile height and longitudinal displacement, the yield sequence and position of wharf structure and the internal force of pile foundation. It is concluded that the increase of pile diameter can raise the limit load of structure; pile foundation is given to longitudinal bending under longitudinal horizontal earthquake; the longitudinal moment of pile foundation increases from sea side to land side; the plastic hinges develop generally from land side to sea side; for one row of piles, it develops from one end to the other side in longitudinal direction; for the same pile foundation, it develops from the bottom to the top.
出处
《水电能源科学》
北大核心
2013年第12期109-112,共4页
Water Resources and Power
