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学者姓名：张明聚
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摘要 ：
This paper aims at analyzing the influence of non-associated flow rule on passive face instability for shallow shield tunnels. The influence exerted by dilation angle on the limit support pressures, the failure zones and partial failure ratios is investigated by numerical simulations. Based on the failure zone obtained from numerical simulation, a log-spiral mechanism is proposed. The upper-bound theorem is employed to acquire the limit support pressures, failure zones and partial failure ratios. The analytical results indicate that dilation angle has a significant influence on the limit support pressure and failure mechanisms. Finally, by comparison with the numerical models and existing analytical models, the results indicate that the proposed log-spiral model has a certain accuracy in analyzing the face instability of blow-out.
关键词 ：
Limit analysis Limit analysis Blow-out Blow-out Shallow tunnels Shallow tunnels Numerical simulations Numerical simulations Non-associated flow rule Non-associated flow rule
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| GB/T 7714 | Li, Pengfei , Wei, Yingjie , Zhang, Mingju et al. Influence of non-associated flow rule on passive face instability for shallow shield tunnels [J]. | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY , 2022 , 119 . |
| MLA | Li, Pengfei et al. "Influence of non-associated flow rule on passive face instability for shallow shield tunnels" . | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 119 (2022) . |
| APA | Li, Pengfei , Wei, Yingjie , Zhang, Mingju , Huang, Qingfei , Wang, Fan . Influence of non-associated flow rule on passive face instability for shallow shield tunnels . | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY , 2022 , 119 . |
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摘要 ：
本发明属于基坑支护技术领域，具体的说是一种装配式组合钢管混凝土内支撑固支端结构；包括预埋钢板和短接件；所述预埋钢板的表面固定连接有托盘；所述短接件的表面固定连接有高脚螺栓；所述短接件的表面通过高脚螺栓螺纹连接有第一法兰盘；所述短接件与第一法兰盘之间装填有多个模袋；通过此结构，既能承担压力也能承载拉力和弯矩，且采用模袋混凝土灌浆填缝，可以达到内支撑两端充分填缝的效果，并消除由施工误差引起的偏心作用且实现了模块化施工，通过微型高压混凝土泵在压注过程中能够施加给混凝土一定的预应力，降低了混凝土水灰比，一定程度上提高了混凝土早期承受强度，起到快速承载作用。
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| GB/T 7714 | 郭彩霞 , 张明聚 , 单余含 et al. 一种装配式组合钢管混凝土内支撑固支端结构 : CN202211112069.4[P]. | 2022-09-13 . |
| MLA | 郭彩霞 et al. "一种装配式组合钢管混凝土内支撑固支端结构" : CN202211112069.4. | 2022-09-13 . |
| APA | 郭彩霞 , 张明聚 , 单余含 , 孔恒 , 郭飞 , 傅睿智 et al. 一种装配式组合钢管混凝土内支撑固支端结构 : CN202211112069.4. | 2022-09-13 . |
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摘要 ：
为研究基坑工程钢支撑体系中活络端的偏心受压性能,建立有限元模型,经试验结果验证后,开展一系列的数值模拟,系统研究偏心距、试件的关键参数等对活络端在偏心荷载作用下的轴向承载性能和抗弯性能的影响。结果表明,活络端的偏心距不应超出箱型体外边缘;箱型体间的缀板能够有效提升活络端的抗弯性能;活络端承载性能和抗弯性能随钢楔长度、钢楔宽度、钢板厚度和箱型体长度的增加而提高;且改变钢板厚度能明显改善活络端的承载性能和抗弯性能。
关键词 ：
参数分析 参数分析 钢支撑 钢支撑 基坑工程 基坑工程 有限元分析 有限元分析 活络端 活络端 偏心受压 偏心受压
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| GB/T 7714 | 张明聚 , 谢治天 , 李鹏飞 et al. 基于有限元分析的基坑工程钢支撑活络端偏心受压性能研究 [J]. | 土木工程学报 , 2021 , 54 (10) : 106-116 . |
| MLA | 张明聚 et al. "基于有限元分析的基坑工程钢支撑活络端偏心受压性能研究" . | 土木工程学报 54 . 10 (2021) : 106-116 . |
| APA | 张明聚 , 谢治天 , 李鹏飞 , 郭彩霞 . 基于有限元分析的基坑工程钢支撑活络端偏心受压性能研究 . | 土木工程学报 , 2021 , 54 (10) , 106-116 . |
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摘要 ：
This paper focuses on the ground settlement induced by the construction of a curved shield tunnel. Ground loss and construction loadings are the two factors causing ground settlement, and two corresponding analytical models were developed. First, the ground settlement due to ground loss was analyzed based on 3D image theory. The "integrative gap at shield tail" (IGST) and overcutting gap of a curved tunnel were considered. Second, the ground settlement due to construction loadings was analyzed by modifying Mindlin's solutions. The additional thrust, frictional force, and grouting pressure were considered. Subsequently, a case study and a parameter analysis were conducted. Finally, the obtained solutions were compared with a classical analytical solution, numerical simulations, and monitored results. The proposed model could effectively predict the ground settlement induced during curved shield tunneling.
关键词 ：
U455 U455 TU744 TU744 Curved tunnel Curved tunnel Ground loss Ground loss Image theory Image theory 43 43 Ground settlement Ground settlement s solution s solution Mindlin’ Mindlin’
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| GB/T 7714 | Li, Shao-hua , Zhang, Ming-ju , Li, Peng-fei . Analytical solutions to ground settlement induced by ground loss and construction loadings during curved shield tunneling [J]. | JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A , 2021 , 22 (4) : 296-313 . |
| MLA | Li, Shao-hua et al. "Analytical solutions to ground settlement induced by ground loss and construction loadings during curved shield tunneling" . | JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A 22 . 4 (2021) : 296-313 . |
| APA | Li, Shao-hua , Zhang, Ming-ju , Li, Peng-fei . Analytical solutions to ground settlement induced by ground loss and construction loadings during curved shield tunneling . | JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A , 2021 , 22 (4) , 296-313 . |
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摘要 ：
Rainfall infiltration is one of the main triggers of slope failure. Based on the upper bound theorem of limit analysis, this work presents an analytical stability analysis of a 3D vertical cut slope subjected to rainfall infiltration. An analytical model that can directly provide pore water pressure change at any depth and time is adopted to calculate the time-dependent matric suction and shear strength of unsaturated soil during the rainfall infiltration process. Thereafter, based on a 3D rotational failure mechanism of a slope, the energy balance equation is built, and the factor of safety (FoS) of the slope is consequently determined in conjunction with the strength reduction technique. The influences of the 3D characteristics of the slope and rainfall patterns on both FoS and failure pattern of the slope are investigated. It is found that the 3D characteristic of slope is a key factor which determines the FoS of slope. Different rainfall infiltration patterns lead to diverse variation rules of both the FoS solutions and the critical failure patterns of slope. However, these rainfall patterns with a same accumulated rainfall result in the same FoS solution of slope at the end of rainfall infiltration. The present work may provide guidance on the stability analysis and preliminary design of slopes subjected to rainfall infiltration.
关键词 ：
3D slope stability 3D slope stability Pore water pressure change Pore water pressure change Rainfall infiltration Rainfall infiltration Unsaturated soil Unsaturated soil
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| GB/T 7714 | Xu, Jingshu , Zhao, Xu , Li, Pengfei et al. Stability of a 3D unsaturated vertical cut slope subjected to variable rainfall infiltration [J]. | COMPUTERS AND GEOTECHNICS , 2021 , 134 . |
| MLA | Xu, Jingshu et al. "Stability of a 3D unsaturated vertical cut slope subjected to variable rainfall infiltration" . | COMPUTERS AND GEOTECHNICS 134 (2021) . |
| APA | Xu, Jingshu , Zhao, Xu , Li, Pengfei , Zhang, Mingju . Stability of a 3D unsaturated vertical cut slope subjected to variable rainfall infiltration . | COMPUTERS AND GEOTECHNICS , 2021 , 134 . |
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摘要 ：
To improve the seismic performance of subway stations built by enlarging two parallel shield tunnels, joints of special structures between prefabricated open-loop segments and cast-in-site main station structures were proposed. Experiments on the low-frequency cyclic loading of full-scale models of joints under different structural configurations were carried out. The seismic performance, such as the load-displacement hysteresis curves, skeleton curves, structural ductility, strength degradation, energy dissipation, strain of the cable-stayed bars and failure modes, were studied. The results showed that compared with the pre-embedded connector joint, the preembedded steel plate joint had advantages in terms of the mechanical stability, intensity, stiffness, energy dissipation capacity and ductility performance. However, the relative displacement between the segment and wall column of the pre-embedded steel plate joint was larger than that of the pre-embedded connector joint. Both types of joints had a full hysteretic circle, good ductility nature, energy dissipation ability, and stable elastic and elastic-plastic deformation. The cable-stayed bars did not yield in the stretch area when the joints failed. Both of the joints could meet the performance requirements of strong joints and weak components.
关键词 ：
Seismic performance Seismic performance Enlarging subway station on a shield tunnel Enlarging subway station on a shield tunnel Low frequency cyclic load Low frequency cyclic load Load-displacement hysteresis curves Load-displacement hysteresis curves Joints of special structures Joints of special structures
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| GB/T 7714 | Liu, Yi , Zhang, Mingju , Li, Pengfei et al. Experiments on the seismic performance of Y-shape joints of subway stations built by enlarging two parallel shield tunnels [J]. | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY , 2021 , 115 . |
| MLA | Liu, Yi et al. "Experiments on the seismic performance of Y-shape joints of subway stations built by enlarging two parallel shield tunnels" . | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 115 (2021) . |
| APA | Liu, Yi , Zhang, Mingju , Li, Pengfei , Wang, Binghui , Wang, Liyan , Yuan, Pingping . Experiments on the seismic performance of Y-shape joints of subway stations built by enlarging two parallel shield tunnels . | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY , 2021 , 115 . |
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摘要 ：
This paper focuses on analytical solutions of additional stresses for a curved shield tunnel. General equations of additional stress caused by construction loadings were deduced by rewritten Mindlin solutions, and additional thrust and friction force were considered. In addition, theoretical formulae of additional stress caused by soil loss were deduced based on the three-dimensional image theory, and the actual processes of synchronous grouting and over-excavation were considered. Then, by using a curved tunnel in Zhuhai City, China as a case study, the distribution laws of additional stress along the directions of advancement and circumference were investigated. Under the coaction of construction loadings and soil loss, it was found that the distributions of σx and σy along the advancement direction for curved tunnels are similar to those for straight-line tunnels. However, the soil around a curved tunnel is more likely to yield because the difference between the normal stresses in two directions is greater than that for soil around a straight-line tunnel. Additional stresses caused by soil loss along the circumferential direction for a curved tunnel were found to no longer have the characteristics of strictly axial symmetry. The values of compressive stress σx and σy at the outer side of the curved tunnel were found to be greater and smaller than those at the inner side, respectively. As the curvature radius decreases, the maximum tensile stresses σx and σy for curved tunnels were found to decrease and increase, respectively. Furthermore, an insufficient quantity of injection grouting will trigger detrimental effects to nearby structures during the approaching excavation. © 2020 Elsevier Ltd
关键词 ：
Soils Soils Shielding Shielding Mortar Mortar Compressive stress Compressive stress Concrete construction Concrete construction Friction Friction Grouting Grouting Excavation Excavation
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| GB/T 7714 | Li, Shaohua , Li, Pengfei , Zhang, Mingju . Analysis of additional stress for a curved shield tunnel [J]. | Tunnelling and Underground Space Technology , 2021 , 107 . |
| MLA | Li, Shaohua et al. "Analysis of additional stress for a curved shield tunnel" . | Tunnelling and Underground Space Technology 107 (2021) . |
| APA | Li, Shaohua , Li, Pengfei , Zhang, Mingju . Analysis of additional stress for a curved shield tunnel . | Tunnelling and Underground Space Technology , 2021 , 107 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
本发明公开了一种圆形基坑钢波纹板‑模袋混凝土支护结构及其施工方法，模袋内侧表面通过防水密封胶与钢波纹板管片粘牢，与管片波纹完全贴合，注浆孔处，简易单向阀钢波纹板管片外一侧外丝穿出管片，并用适配尺寸薄螺母压紧。相邻两块钢波纹板管片之间通过端法兰上预留的螺栓孔定位，相邻两环钢波纹板管片之间通过侧法兰上预留的螺栓孔定位，两环之间错缝拼装，采用高强螺栓连接。拼装完成一环结构后，任选两块位置相对的模袋“对侧灌注”混凝土，并以此为轴，顺时针灌注剩余模袋。本发明弥补了基坑围护结构背后注浆时跑浆漏浆的缺点，提高了钢波纹板管片的受力性能，使钢波纹板‑模袋混凝土支护结构在各工程领域中具有更好的适用性。
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| GB/T 7714 | 张明聚 , 韩忆萱 , 李鹏飞 et al. 一种圆形基坑钢波纹板-模袋混凝土支护结构 : CN202111001972.9[P]. | 2021-08-30 . |
| MLA | 张明聚 et al. "一种圆形基坑钢波纹板-模袋混凝土支护结构" : CN202111001972.9. | 2021-08-30 . |
| APA | 张明聚 , 韩忆萱 , 李鹏飞 , 郭彩霞 . 一种圆形基坑钢波纹板-模袋混凝土支护结构 : CN202111001972.9. | 2021-08-30 . |
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摘要 ：
本发明公开了一种连接钢管内支撑‑围护结构的钢套筒节点，由预埋钢板、模袋混凝土、钢套筒组成，节点结构一端与基坑侧壁连接，另一端与钢管内支撑连接。预埋钢板浇筑于围护结构地连墙内。钢套筒由上半套筒和下半套筒组成，侧面伸出一定长度翼缘，通过高强螺栓固定扣紧。圆柱模袋放置于钢套筒内部，混凝土灌注工作完成后，使得膜袋一端紧贴预埋钢板，另一端与钢管支撑顶紧。固定钢板用来承载钢管内支撑，钢套筒内有固定钢楔，用于限制内支撑水平方向位移。本发明模袋是一种透气透水材料，混凝土中水分通过挤压排出，降低了水灰比，增大强度，相比常用的钢楔式活络端头，能够显著改善内支撑的偏心问题，提高内支撑承载力，具有广阔的应用前景。
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| GB/T 7714 | 张明聚 , 刘文杰 , 李鹏飞 et al. 一种连接钢管内支撑-围护结构的钢套筒节点 : CN202111001949.X[P]. | 2021-08-30 . |
| MLA | 张明聚 et al. "一种连接钢管内支撑-围护结构的钢套筒节点" : CN202111001949.X. | 2021-08-30 . |
| APA | 张明聚 , 刘文杰 , 李鹏飞 , 郭彩霞 . 一种连接钢管内支撑-围护结构的钢套筒节点 : CN202111001949.X. | 2021-08-30 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
本发明公开了一种连接钢管内支撑与基坑围护结构的模袋混凝土‑钢板组合节点，该节点由模袋混凝土、钢板、可调节螺纹钢筋组成，节点结构一端与基坑侧壁连接，另一端与钢管内支撑端面抵接。钢板在围护结构地连墙或排桩施工时浇筑并固定。钢板承担支撑托盘作用。所述模袋用来压力灌注混凝土，使其填充节点空隙。钢板与钢管内支撑端面顶紧。所述螺纹钢筋连接钢板根据现场需求调节长度。本发明压力灌注混凝土后，混凝土具有一定的流动性，能够很好地填充节点内部空隙，消除偏心给节点带来的局部弱化影响，且模袋是一种透水透气材料，混凝土凝结过程中不断通过排水降低水灰比，增大后期强度、提高承载力，本发明具有良好的技术经济效应和应用前景。
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| GB/T 7714 | 张明聚 , 刘文杰 , 李鹏飞 et al. 一种连接钢管内支撑与基坑围护结构的模袋混凝土-钢板组合节点 : CN202111001939.6[P]. | 2021-08-30 . |
| MLA | 张明聚 et al. "一种连接钢管内支撑与基坑围护结构的模袋混凝土-钢板组合节点" : CN202111001939.6. | 2021-08-30 . |
| APA | 张明聚 , 刘文杰 , 李鹏飞 , 郭彩霞 . 一种连接钢管内支撑与基坑围护结构的模袋混凝土-钢板组合节点 : CN202111001939.6. | 2021-08-30 . |
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