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学者姓名：张文学
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Abstract ：
Rail-cum-road truss bridges are rapidly developing, and frequent cracking in freshly poured concrete is of great concern. For the performance of such a load-bearing deck, it is necessary to understand its stress status due to short-term shrinkage. In this study, a newly constructed railway-cum-highway truss bridge in Guangdong Province was used to analyze the stress distribution in the concrete deck under short-term shrinkage. In-situ tests were performed to measure the shrinkage of one deck panel and two companion specimens shortly after the concrete pouring. It was found that the free shrinkage of companion specimens at 42 days was 140-150 microstrains, which was significantly higher than that indicated by current codes or standards. An exponential form of shrinkage development curve was proposed based on shrinkage test results. The measured shrinkage of the deck panel varied with locations, with a relatively large concrete shrinkage between grillages, reaching 45-55 microstrains at the end of the shrinkage test. The resulting mechanical strain due to restraints, taken as the difference in measured strains between the deck panel and companion specimen, was consistent with numerical simulation results, demonstrating the validity of the analysis method adopted. Under short-term shrinkage, the secondary tensile stress of 1.5-3.5 MPa was present in the deck above the main trusses and cross beams, triggering potential cracking. The stress is primarily attributed to the external restraint from connecting steel members, whose degree of restraint dramatically exceeds that of internal restraint from reinforcement. Although creep tends to reduce such shrinkage stress slightly, the effect of short-term shrinkage requires significant attention.
Keyword ：
Rail-cum-road bridge Rail-cum-road bridge Finite element simulation Finite element simulation Short-term shrinkage Short-term shrinkage In-situ testing In-situ testing Secondary shrinkage stress Secondary shrinkage stress Composite bridge deck Composite bridge deck
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| GB/T 7714 | Chen, Huating , Li, Dewang , Zhu, Xiufu et al. Short-term shrinkage stress in deck concrete of rail-cum-road truss bridge [J]. | CASE STUDIES IN CONSTRUCTION MATERIALS , 2023 , 19 . |
| MLA | Chen, Huating et al. "Short-term shrinkage stress in deck concrete of rail-cum-road truss bridge" . | CASE STUDIES IN CONSTRUCTION MATERIALS 19 (2023) . |
| APA | Chen, Huating , Li, Dewang , Zhu, Xiufu , Zhang, Wenxue . Short-term shrinkage stress in deck concrete of rail-cum-road truss bridge . | CASE STUDIES IN CONSTRUCTION MATERIALS , 2023 , 19 . |
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Abstract ：
This paper proposes a novel self-centring friction rope device (Sc-FRD) for improving the seismic isolation and recentring effect of continuous bridges. The Sc-FRD is designed to provide energy dissipation and re-centring functions and works in conjunction with typical sliding bearings to separate vertical support. The Sc-FRD isolated system allows function separation, with sliding bearings supporting vertical loads, friction rope dampers (FRDs) dissipating seismic energy, and self-centring springs providing re-centring forces. Firstly, a constitutive model of the Sc-FRD was developed by theoretical analysis, and the mechanical properties of the FRD were studied through quasi-static testing. Then, a 1/30-scale, three-span continuous bridge model was constructed and tested on the shake table to investigate the seismic performance of the Sc-FRD isolated system. Finally, the software ANSYS was employed for an effective simulation of the shake-table test. The test results showed that the Sc-FRD isolated system performed well in seismic isolation and energy dissipation. It could effectively reduce the fixed pier's earthquake responses and restrain the isolator's residual displacements within an acceptable range. Furthermore, the Sc-FRD's main parameters and ground motion characteristics greatly influenced the residual displacement of the bridge isolation system, with the coda stage of ground motions playing a critical role in the superstructure's re-centring.
Keyword ：
Self-centring Self-centring Friction damper Friction damper Seismic isolation Seismic isolation Function separated Function separated Continuous bridge Continuous bridge
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| GB/T 7714 | Wang, Zhibin , Zhang, Wenxue , Fang, Rong et al. Development and experimental investigation of a novel self-centring friction rope device for continuous bridges [J]. | ENGINEERING STRUCTURES , 2023 , 289 . |
| MLA | Wang, Zhibin et al. "Development and experimental investigation of a novel self-centring friction rope device for continuous bridges" . | ENGINEERING STRUCTURES 289 (2023) . |
| APA | Wang, Zhibin , Zhang, Wenxue , Fang, Rong , Yang, Weifeng , Kang, Luming . Development and experimental investigation of a novel self-centring friction rope device for continuous bridges . | ENGINEERING STRUCTURES , 2023 , 289 . |
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Abstract ：
Curved high-pier rigid frame bridges (CHRF bridges) are unavoidably affected by near-fault ground motions (NFGMs), and seismic pounding between adjacent components of CHRF bridge has a significant effect on the seismic performance of CHRF bridges. The seismic response and seismic pounding laws of CHRF bridges under NFGMs need further investigation. In this study, the influence of NFGMs with impulse and directional effects on the dynamic response of CHRF bridges was studied. Subsequently, the pounding responses between adjacent components of CHRF bridge were systematically analyzed. The results showed that the impulse and directional effects of NFGMs have a significant impact on the seismic response of CHRF bridges. The seismic response of CHRF bridges under near-fault impulse-like ground motions (IPGMs) is greater than that under near-fault non-pulse-like ground motions (NPGMs). CHRF bridges have the lowest seismic response under far-fault ground motions (FFGMs). The seismic response of CHRF bridges is significant under backward region ground motions (BRGMs) and the lowest under forward region ground motions (FRGMs). The IPGMs induce larger pounding force (PF) and a smaller number of poundings (PN) compared with FFGMs. The PF and the PN increase from the FRGMs to the BRGMs. Because of the pounding, the impulse and directional effects of NFGMs cause the shear force of the main pier and the auxiliary pier of CHRF bridges to increase significantly and the relative bending moment decreases. Moreover, the shear force and bending moment of the tie beam increases significantly owing to pounding.
Keyword ：
numerical analysis numerical analysis pounding response pounding response dynamic response dynamic response CHRF bridges CHRF bridges near-fault ground motion near-fault ground motion
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| GB/T 7714 | Zheng, Yongrui , Wang, Jin , Xu, Weibing et al. Impact of Near-Fault Ground Motions on Longitudinal Seismic Response of CHRF Bridges [J]. | SUSTAINABILITY , 2022 , 14 (6) . |
| MLA | Zheng, Yongrui et al. "Impact of Near-Fault Ground Motions on Longitudinal Seismic Response of CHRF Bridges" . | SUSTAINABILITY 14 . 6 (2022) . |
| APA | Zheng, Yongrui , Wang, Jin , Xu, Weibing , Li, Nana , Zhang, Wenxue , Chen, Yanjiang . Impact of Near-Fault Ground Motions on Longitudinal Seismic Response of CHRF Bridges . | SUSTAINABILITY , 2022 , 14 (6) . |
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Abstract ：
To ensure the safety of bridges during horizontal rotation, we propose a method through which it is possible to evaluate the stability of structures in real time by measuring the vibration acceleration of the rotating structure. First, the vibration characteristics collected during the horizontal rotation of a typical high-speed railway bridge were compared with the results of a finite element analysis. Second, the analytic formula to calculate the ratio of vibration acceleration and the pier-bottom-section bending moment for the rotating structure was deduced by considering the beam and pier as an infinite-degree-of-freedom rod. Then, the results of the analytical formula were compared with those of the finite element calculation. Overall, the results showed that the bending moment of the pier bottom (which was related to the stability of the rotating bridge) was affected only by the two asymmetrical vibration modes. The analytic formula built by considering the beam and pier as an infinite degree-of-freedom rod with equal cross-section effectively described the relationship between the vibration acceleration and pier-bottom-bending moment. Finally, the vibration of the rotating bridge was simplified to the superposition of the first two asymmetric vibration modes in the facade. Based on our findings, we were able to provide a formula and some check tables to calculate the permissible value of vibration acceleration for typical high-speed railway bridges.
Keyword ：
stability stability construction monitoring construction monitoring horizontal rotation horizontal rotation vibration vibration acceleration acceleration
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| GB/T 7714 | Zhang, Wenxue , Liang, Kun , Chen, Ying . Relationship between the Vibration Acceleration and Stability of a Continuous Girder Bridge during Horizontal Rotation [J]. | SUSTAINABILITY , 2022 , 14 (10) . |
| MLA | Zhang, Wenxue et al. "Relationship between the Vibration Acceleration and Stability of a Continuous Girder Bridge during Horizontal Rotation" . | SUSTAINABILITY 14 . 10 (2022) . |
| APA | Zhang, Wenxue , Liang, Kun , Chen, Ying . Relationship between the Vibration Acceleration and Stability of a Continuous Girder Bridge during Horizontal Rotation . | SUSTAINABILITY , 2022 , 14 (10) . |
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Abstract ：
滑坡损毁在建桥梁临时加固利用研究
Keyword ：
桥梁损毁 桥梁损毁 承载力 承载力 临时加固方案 临时加固方案 滑坡 滑坡
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| GB/T 7714 | 冉隆飞 , 李志杰 , 张文学 et al. 滑坡损毁在建桥梁临时加固利用研究 [J]. | 冉隆飞 , 2021 , 19 (3) : 37-40 . |
| MLA | 冉隆飞 et al. "滑坡损毁在建桥梁临时加固利用研究" . | 冉隆飞 19 . 3 (2021) : 37-40 . |
| APA | 冉隆飞 , 李志杰 , 张文学 , 陈浩 , 国防交通工程与技术 . 滑坡损毁在建桥梁临时加固利用研究 . | 冉隆飞 , 2021 , 19 (3) , 37-40 . |
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Abstract ：
为研究预应力张拉对混凝土箱梁现浇支架受力的影响,以保定乐凯大街南延工程转体斜拉桥为依托,按规范对超宽混凝土箱梁现浇支架进行了混凝土浇筑工况下的承载力验算。分别建立考虑纵向预应力和横向预应力的有限元模型,分析预应力张拉对支架引起的附加荷载效应,并对比混凝土浇筑工况下支架的最大受力状态。结果表明,对于超宽预应力混凝土箱梁,预应力张拉引起的支架附加荷载不容忽略,在进行支架设计验算时应引起足够的重视。
Keyword ：
附加荷载 附加荷载 桥梁工程 桥梁工程 连续箱梁 连续箱梁 斜拉桥 斜拉桥 有限元分析 有限元分析 预应力张拉 预应力张拉 现浇支架 现浇支架
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| GB/T 7714 | 吴拥军 , 吴淑康 , 张文学 et al. 考虑预应力张拉效应的超宽箱梁现浇支架验算 [J]. | 施工技术(中英文) , 2021 , 50 (17) : 19-21,41 . |
| MLA | 吴拥军 et al. "考虑预应力张拉效应的超宽箱梁现浇支架验算" . | 施工技术(中英文) 50 . 17 (2021) : 19-21,41 . |
| APA | 吴拥军 , 吴淑康 , 张文学 , 陈桂瑞 . 考虑预应力张拉效应的超宽箱梁现浇支架验算 . | 施工技术(中英文) , 2021 , 50 (17) , 19-21,41 . |
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Abstract ：
公路梁桥改扩建公铁两用桥桩基础再利用可行性研究
Keyword ：
现场试验 现场试验 数值模拟 数值模拟 桩基再利用 桩基再利用 荷载分担比 荷载分担比 铁路桩基 铁路桩基
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| GB/T 7714 | 李志杰 , 谢益平 , 张文学 et al. 公路梁桥改扩建公铁两用桥桩基础再利用可行性研究 [J]. | 李志杰 , 2021 , 61 (1) : 31-34 . |
| MLA | 李志杰 et al. "公路梁桥改扩建公铁两用桥桩基础再利用可行性研究" . | 李志杰 61 . 1 (2021) : 31-34 . |
| APA | 李志杰 , 谢益平 , 张文学 , 张成 , 铁道建筑 . 公路梁桥改扩建公铁两用桥桩基础再利用可行性研究 . | 李志杰 , 2021 , 61 (1) , 31-34 . |
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Abstract ：
公路连续梁桥改扩建为公铁两用钢桁梁桥技术
Keyword ：
公铁两用桥 公铁两用桥 桥梁工程 桥梁工程 钢桁梁 钢桁梁 改扩建 改扩建 施工技术 施工技术
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| GB/T 7714 | 徐步齐 , 张文学 , 许乐 et al. 公路连续梁桥改扩建为公铁两用钢桁梁桥技术 [J]. | 徐步齐 , 2021 , 50 (5) : 41-45 . |
| MLA | 徐步齐 et al. "公路连续梁桥改扩建为公铁两用钢桁梁桥技术" . | 徐步齐 50 . 5 (2021) : 41-45 . |
| APA | 徐步齐 , 张文学 , 许乐 , 高奇 , 施工技术 . 公路连续梁桥改扩建为公铁两用钢桁梁桥技术 . | 徐步齐 , 2021 , 50 (5) , 41-45 . |
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Abstract ：
以南沙港铁路鸡鸦水道既有公路桥改扩建公铁两用桥工程为依托,对新老桩基础在荷载作用下的应变情况进行了测试,并建立包含既有桩基础和新建桩基础的三维有限元模型,分析了桩长和桩型对新老桩共同工作时荷载分担比例的影响规律。结果表明:新老桩荷载分担比例受桩长影响较小,受桩型影响明显;端承桩各桩承担上部竖向荷载较均匀,摩擦桩受群桩整体不均匀沉降影响造成各桩受力不均匀,外围老桩承担竖向荷载比重大。
Keyword ：
数值模拟 数值模拟 现场试验 现场试验 荷载分担比 荷载分担比 桩基再利用 桩基再利用 铁路桩基 铁路桩基
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| GB/T 7714 | 李志杰 , 谢益平 , 张文学 et al. 公路梁桥改扩建公铁两用桥桩基础再利用可行性研究 [J]. | 铁道建筑 , 2021 , 61 (01) : 31-34 . |
| MLA | 李志杰 et al. "公路梁桥改扩建公铁两用桥桩基础再利用可行性研究" . | 铁道建筑 61 . 01 (2021) : 31-34 . |
| APA | 李志杰 , 谢益平 , 张文学 , 张成 . 公路梁桥改扩建公铁两用桥桩基础再利用可行性研究 . | 铁道建筑 , 2021 , 61 (01) , 31-34 . |
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Abstract ：
针对在建桥梁受滑坡冲毁后承载力不足和阻断两侧工程建设等问题,为保证前方工程建设所需运梁通道的畅通,将灾害对工期的影响降低到最小,以被滑坡冲毁的张家那大桥为研究对象,在对灾害成因和损伤程度进行现场调查分析的基础上,制定详细加固方案,建立空间有限元分析模型,对加固前后桥梁的承载力和安全状态进行分析,对滑坡冲毁桥梁临时加固利用的可行性进行研究。研究表明:滑坡损毁桥梁进行临时加固利用方案可行,加固后桥梁的位移和内力响应均得到有效的控制,其承载力满足运梁车辆通行要求。
Keyword ：
承载力 承载力 临时加固方案 临时加固方案 桥梁损毁 桥梁损毁 滑坡 滑坡
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| GB/T 7714 | 冉隆飞 , 李志杰 , 张文学 et al. 滑坡损毁在建桥梁临时加固利用研究 [J]. | 国防交通工程与技术 , 2021 , 19 (03) : 37-40 . |
| MLA | 冉隆飞 et al. "滑坡损毁在建桥梁临时加固利用研究" . | 国防交通工程与技术 19 . 03 (2021) : 37-40 . |
| APA | 冉隆飞 , 李志杰 , 张文学 , 陈浩 . 滑坡损毁在建桥梁临时加固利用研究 . | 国防交通工程与技术 , 2021 , 19 (03) , 37-40 . |
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