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Numerical study on the seismic response of the underground subway station- surrounding soil mass-ground

Guobo WANG, Mingzhi YUAN, Xianfeng MA, Jun WU

《结构与土木工程前沿（英文）》 2017年第11卷第4期页码 424-435 doi: 10.1007/s11709-016-0381-7

摘要： Ground buildings constructed above metro station have increased very quickly due to the limited land resources in urban areas. In this paper, the seismic response of the Underground subway station-Surrounding soil mass-Ground adjacent buildings (USG) system subjected to various seismic loading is studied through numerical analysis. The numerical model is established in terms of the calculation domain, boundary condition, and contact property between soil and structure based on the real project. The reciprocal influence between subway station and ground adjacent building, and their effects on the dynamic characteristics of surrounding soil mass are also investigated. Through the numerical study, it is found that the impact of underground structure on the dynamic characteristics of the surrounding soil mass depends on its own dimension, and the presence of underground structure has certain impact on the seismic response of ground adjacent building. Due to the presence of underground structure and ground adjacent building, the vertical acceleration generated by the USG system cannot be ignored. The outcomes of this study can provide the references for seismic design of structures in the USG system.

关键词： underground subway station ground adjacent building seismic response

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Comparison of shallow tunneling method with pile and rib method for construction of subway station in

Sina AMIRI; Ali Naghi DEHGHAN

《结构与土木工程前沿（英文）》 2022年第16卷第6期页码 704-717 doi: 10.1007/s11709-021-0746-4

摘要： In the present study, a comparison between the new shallow tunneling method (STM) and the traditional pile and rib method (PRM) was conducted to excavate and construct subway stations in the geological conditions of Tehran. First, by selecting Station Z6 located in the Tehran Subway Line 6 as a case study, the construction process was analyzed by PRM. The maximum ground settlement of 29.84 mm obtained from this method was related to the station axis, and it was within the allowable settlement limit of 30 mm. The acceptable agreement between the results of numerical modeling and instrumentation data indicated the confirmation and accuracy of the excavation and construction process of Station Z6 by PRM. In the next stage, based on the numerical model validated by instrumentation data, the value of the ground surface settlement was investigated during the station excavation and construction by STM. The results obtained from STM showed a significant reduction in the ground surface settlement compared to PRM. The maximum settlement obtained from STM was 6.09 mm as related to the front of the excavation face. Also, the sensitivity analysis results denoted that in addition to controlling the surface settlement by STM, it is possible to optimize some critical geometric parameters of the support system during the station excavation and construction.

关键词： shallow tunneling method pile and rib method ground surface settlement subway station construction numerical modeling

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Seismic responses of subway station with different distributions of soft soil in Tianjin

Dejian YANG,Meiling DUAN

《结构与土木工程前沿（英文）》 2014年第8卷第2期页码 187-193 doi: 10.1007/s11709-014-0252-z

摘要： In connection with the practical project of Kunming Road station of Tianjin subway Line 3, the paper established a two-dimensional finite element model with visco-elastic boundary by using ANSYS and analyzed seismic responses of subway station with different distribution of soft soil. The nonlinear dynamic properties of soft soils are modeled by the KINH. And obtain the response rules about displacement and internal force on subway station in the general field soil and five different distributions of soft soil. Provide reference for improving the seismic performance of subway stations in Tianjin soft soil.

关键词： distribution of soft soil soft soil in Tianjin seismic response ANSYS

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Design of a shaking table test box for a subway station structure in soft soil

YANG Linde, ZHENG Yonglai, ZHANG Dongliang, JI Qianqian, YANG Chao

《结构与土木工程前沿（英文）》 2007年第1卷第2期页码 194-197 doi: 10.1007/s11709-007-0022-2

摘要： A reasonable choice of structure of a model box is significant for a shaking table test to be successful in geotechnical engineering. A model box has been designed for the shaking table test of a subway station structure in the soft soil of Shanghai in the paper. The reasonable geometric similarity scale of the subway station structure has been determined by a 3-D dynamic analysis under the action of lateral equivalent static loading. The shape, size and structure of the model box are chosen by considering all the involved factors comprehensively. The shape of the box is similar to that of a typical station structure, and the ratio between the plane dimension of the model ground and that of the model structure is big enough to reduce the influence of boundary condition effectively. The structure is strong enough to avoid being demolished by shaking during a test. The contact conditions between the model soil and box are clear to help the data gained from the test well fit that from numerical analysis. The total weight of the model soil and box is less than the bearing capacity of the shaking table apparatus and there is no resonance between the model soil and box. The results show that the model box can be used to simulate the dynamic response of a subway station structure very well, so it provides a firm foundation for the success of the shaking table test of a subway station structure.

关键词： geotechnical engineering numerical analysis weight dynamic analysis Shanghai

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跨地铁运营隧道的地下空间施工组合技术研究 Article

陈湘生

《工程（英文）》 2018年第4卷第1期页码 103-111 doi: 10.1016/j.eng.2017.08.001

摘要：

既有地铁运营隧道对地下空间的强烈分割效应，导致城市繁华地段的地下空间难以有效充分开发，本文提出了以变形缓冲层、特殊注浆技术、小分仓跳挖及门式框反压技术为核心的一整套针对跨地铁运营隧道的地下空间施工组合技术。这些技术在实际工程中的成功应用，解决了跨地铁运营隧道的地下空间合理利用中的重大技术难题，取得了显著的经济效益和社会效益，具有重要的推广应用前景与价值。

关键词：地铁运营隧道地下空间施工组合技术

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Effect of strata restraint on seismic performance of prefabricated sidewall joints in fabricated subway

《结构与土木工程前沿（英文）》 2023年第17卷第5期页码 763-779 doi: 10.1007/s11709-023-0917-6

摘要： A disadvantage of the conventional quasi-static test method is that it does not consider the soil restraint effect. A new method to test the seismic performance of prefabricated specimens for underground assembled structures is proposed, which can realistically reflect the strata restraint effect on the underground structure. Laboratory work combined with finite element (FE) analysis is performed in this study. Three full-scale sidewall specimens with different joint forms are designed and fabricated. Indices related to the seismic performance and damage modes are analyzed comprehensively to reveal the mechanism of the strata restraint effect on the prefabricated sidewall components. Test results show that the strata restraint effect effectively improves the energy dissipation capacity, load-bearing capacity, and the recoverability of the internal deformation of the precast sidewall components. However, the strata restraint effect reduces the ductility of the precast sidewall components and aggravates the shear and bending deformations in the core region of the connection joints. Additionally, the strata restraint effect significantly affects the seismic performance and damage mode of the prefabricated sidewall components. An FE model that can be used to conduct a seismic performance study of prefabricated specimens for underground assembled structures is proposed, and its feasibility is verified via comparison with test data.

关键词： underground structures precast sidewall specimen seismic test method bearing capacity energy dissipation capacity plastic deformation

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A study on bearing characteristic and failure mechanism of thin-walled structure of a prefabricated subwaystation

Lianjin TAO; Cheng SHI; Peng DING; Sicheng LI; Shang WU; Yan BAO

《结构与土木工程前沿（英文）》 2022年第16卷第3期页码 359-377 doi: 10.1007/s11709-022-0816-2

摘要： In order to study the bearing performance of a new type of prefabricated subway station structure (PSSS), firstly, a three-dimensional finite element model of the PSSS was established to study the nonlinear mechanics and deformation performance. Secondly, the bearing mechanism of a PSSS was investigated in detail. Finally, the development law of damages to a thin-walled prefabricated component and the failure evolution mechanism of a PSSS were discussed. The results showed that this new type of the PSSS had good bearing capacity. The top arch structure was a three-hinged arch bearing system, and the enclosure structure and the substructure were respectively used as the horizontal and vertical support systems of the three-hinged arch structure to ensure the integrity and stability of the overall structure. Moreover, the tongue-and-groove joints could effectively transmit the internal force between the components and keep the components deformed in harmony. The rigidity degradation of the PSSS caused by the accumulation of damages to the spandrel, hance, arch foot, and enclosure structure was the main reason of its loss of bearing capacity. The existing thin-walled components design had significant advantages in weight reduction, concrete temperature control, components hoisting, transportation and assembly construction, which achieved a good balance between safety, usability and economy.

关键词： prefabricated subway station thin-walled components finite element analysis bearing characteristic failure mechanism

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大直径盾构侧穿地铁站的变形预测与实测结果分析

张继清,索晓明

《中国工程科学》 2010年第12卷第12期页码 18-22

摘要：

通过数值计算方法对北京地下直径线侧穿地铁2号线某车站的结构变形进行预测，并将预测值与实测值进行对比和差异性原因分析，以期对类似工程预测变形、指定控制指标有一定指导作用。

关键词：大直径盾构地铁车站变形预测监测数值分析

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地铁车站出入口火灾烟气特性的模拟研究

朱伟,卢平,廖光煊,厉培德,洪亦修

《中国工程科学》 2005年第7卷第2期页码 91-96

摘要：

利用木垛火模拟地铁火灾的演化过程，在地铁车站出入口的缩尺度模型中进行模拟实验。采用温度相对值，分析地铁火灾沿车站出入口烟气温度下降的规律及其影响因素。通过实验图像，对烟气分层所需条件以及区域模拟方法在地铁火灾烟气特性研究中的适用性进行了讨论。气体成分测量结果表明，出口处烟气中CO的质量分数存在阶梯状变化的规律。

关键词：地铁火灾缩尺度模型烟流温度烟气形态

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Technology improvements and management innovations in construction of Xiluodu hydropower station on Jinsha

Qixiang FAN

《工程管理前沿（英文）》 2017年第4卷第2期页码 231-237 doi: 10.15302/J-FEM-2017103

摘要： Hongtao ZHOU, Hongwei WANG, Wei ZENG. [J]. Front. Eng, 2018, 5(1): 78-87.Peter REDFERN, Hua ZHONG. [J]. Front. Eng, 2017, 4(2): 193-200.Ming-zhou Liu,Cong-hu Liu,Mao-gen Ge,Yuan Zhang,Qing-hua Zhu. [J]. Front. Eng, 2016, 3(2): 144-146.Chong-guang Feng,Hao Hu,Feng Xu,Jian Yang. [J]. Front. Eng, 2015, 2(2): 178-181.Yu Zhao,Sheng-quan Wang,Ke-chao Zhu. [J]. Front. Eng, 2015, 2(1): 35-38.Ru-gui Chen,Jia-meng Chen. [J]. Front. Eng, 2014, 1(1): 52-61.An Wang. [J]. Front. Eng, 2014, 1(1): 13-17.

关键词： super-high arch dam intelligent construction mass concrete temperature control structure behavior control anti-erosion concrete low-heat portland cement large-discharge and high-velocity spillway tunnels large scale underground powerhouse green hydropower station sustainable development Xiluodu hydropower station

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北京站至北京西站地下直径线工程重大风险源分析与控制

赵勇,韩福忠,李建华

《中国工程科学》 2010年第12卷第12期页码 23-28

摘要：

北京站至北京西站地下直径线工程地处北京市中心城区，沿线建/构筑物众多。沿线穿越立交桥、护城河、地铁2号线等重大风险源。通过对地下直径线全线进行详细的风险评估，充分分析沿线各风险源的状况，并根据评估结果提出防止和降低风险的有效控制措施，施工完成后地铁2号线测点沉降值均小于2 mm，天宁寺桥因隧道开挖引起的沉降值低于3 mm，施工对周围建/构筑物影响非常小。

关键词：隧道风险分析风险控制

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复杂地质条件下水电站地下厂房岩壁梁精细爆破开挖

李昌能,徐成光

《中国工程科学》 2014年第16卷第11期页码 42-47

摘要：

针对向家坝水电站地下厂房岩壁梁地质条件异常复杂、岩台宽度窄、承受荷载大、质量要求高和工期紧迫等特点和难点，贯彻“精细爆破”理念，通过采取合理的开挖顺序、自行设计钢管钻孔样架以确保钻孔精度、双层光面爆破和均匀微量化装药、错孔布置及预锚锁角等技术和工艺措施，对炸药爆炸能量释放与岩体破碎等进行精密控制，以确保岩壁梁的开挖成型质量，取得了优良的爆破效果：岩台光爆孔半孔率分别为Ⅱ类围岩100 %，Ⅲ类围岩99.2 %，Ⅳ类围岩90 %～97.3 %；岩壁无欠挖，平均超挖仅2.9 cm；不平整度为0～4 cm；因爆破和围岩卸荷造成的影响深度在0.2～0.7 m。

关键词：向家坝水电站地下厂房岩壁梁精细爆破开挖