Experimental studies of embedment length of precast bridge pier with socket connection to pile cap
Experimental studies of embedment length of precast bridge pier with socket connection to pile cap
复制标题
承插承接预制桥墩埋深长度试验研究
DOI：
10.1016/j.engstruct.2021.111906
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发表时间：
2021-04
影响因子：
5.5
通讯作者：
Ge Jiping
中科院分区：
文献类型：
--
作者：
Xu Yan;Zeng Zeng;Wang Zhigang;Ge Jiping
承插连接由于其相对于其他连接方式的优势，在桥梁快速施工中被推荐用于连接预制构件。本研究的主要目的是评估不同埋置长度的嵌岩墩的抗震性能，并探讨设计桥墩-承台嵌岩连接的最小埋置长度。数值分析表明，嵌固长度对承插墙的应力分布有较大影响，并提出了一种基于灌浆许用应力估算承插墙最小嵌固长度的方法。相应地，在具有恒定垂直载荷的横向循环载荷下设计和测试试样。试验结果表明，所有试件的抗震性能具有可比性。也就是说，不同的嵌入长度可以达到相同的预期弯曲失效模式，即，塑性铰区形成于承台上方的墩底。由于嵌岩墩的受力机理与扩底墩不同，嵌岩墩在承台中的埋置长度可以减小。考虑到真实的桥梁工程中粘结浆液的强度退化，最小埋置长度应乘以一个安全系数。
Socket connections are recommended to connect precast members in accelerated bridge construction (ABC) due to their advantages over other connecting methods. The primary objectives of this study are to evaluate the seismic behavior of socketed piers with different embedment lengths, and explore the minimum embedment length for designing pier-pile cap socket connections. The numerical analysis suggested that the stress distribution of the socket wall was greatly influenced by the embedment length, and proposed a way to estimate the minimum embedment length based on the allowable stress of grouting. Accordingly, specimens were designed and tested under lateral cyclic loading with a constant vertical load. The experimental results showed the seismic behavior of all specimens were comparable. That is, different embedment lengths could reach the same expected flexural failure mode, i.e., the plastic hinge region formed at the bottom of the pier above the pile cap. And the results also verified that the embedment length for socketed piers into pile caps can be reduced due to a different load mechanism as compared to that of a spread footing. Considering the strength degradation of bonding grout for the real bridge practices, the minimum embedment length should be multiplied a safe factor.
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DOI：
10.1201/b17063-224
发表时间：
2014-05
期刊：
--
影响因子：
--
作者：
A. Mehrsoroush;M. Saiidi
通讯作者：
A. Mehrsoroush;M. Saiidi
DOI：
10.3130/aijs.59.107
发表时间：
1994
期刊：
--
影响因子：
--
作者：
Yuta Osanai;F. Watanabe;S. Okamoto
通讯作者：
Yuta Osanai;F. Watanabe;S. Okamoto
DOI：
10.1007/1-4020-4891-2_10
发表时间：
2006
期刊：
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影响因子：
--
作者：
P. Riva
通讯作者：
P. Riva
影响因子：
1.8
作者：
Kyle P. Steuck;M. Eberhard;J. Stanton
通讯作者：
Kyle P. Steuck;M. Eberhard;J. Stanton
影响因子：
4.1
作者：
Mohebbi, Alireza;Saiidi, M. Saiid;Itani, Ahmad M.
通讯作者：
Itani, Ahmad M.