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Uncovering Xi Jinping's Policy Agenda: Text As Data Approach
The Developing Economies, Volume 63, Issue 1, Page 9-46, March 2025.How many agendas has Xi Jinping put forth and promoted since taking office in 2012, and what are the types of agendas? How much of political attention has each agenda received, and how has the allocation of attention changed over time? We utilize a dataset of presidential statements, speeches, and reports from 2012 to 2022 and employed automated text ...
Jaehwan Lim, Asei Ito, Hongyong Zhang
wiley +1 more source
Research on development law of repeated mining overburden fractures in close inclined multiple coal seams [PDF]
In the field of roof water hazard prevention and control, the evolution height of water conducting fissure zone is one of the important parameters of water hazard prevention.
Haifeng ZHU +5 more
core +1 more source
Research on web stability and human-induced vibration of Concrete filled steel tubular with corrugated steel web composite structure [PDF]
, 2014 波形钢腹板-钢管混凝土组合结构作为一种新型结构，可以发挥钢管混凝土抗压能力强和波形钢腹抗剪能力高的优点，其作为腹板的波形钢还具有自重轻、受力明确、施工方便、美观等优点，使得这种组合结构具有强大的竞争力和广泛的应用前景，作为一种新型结构，前人对其进行的理论与试验研究甚少。为此，本文在侨英人行天桥荷载试验的基础上，建立了该桥的有限元模型，对该桥的波形钢腹板稳定性和人致振动特性进行了有限元分析，并总结规律。本文的工作主要集中在以下几个方面： 通过对侨英人行天桥的荷载试验和有限元分析，结果表明 ...
曾显通
core
Determination of grouting layer and stability analysis of slurry-resisting overburden in separation grouting [PDF]
The technology of bed separation grouting subsidence reduction is one of the important means of protecting surface buildings and infrastructures in mining areas, the selection of the grouting layer and the integrity of the slurry-resisting overburden ...
Dongtao WU +4 more
core +1 more source
, 2014 我国各地实施的预制装配式混凝土结构体系类型少,建筑的使用功能、高度、层数、抗震设防烈度等适用范围要求严格。保证较高的预制装配率,充分发挥预制、装配提供的技术优势,未来预制装配式混凝土结构技术在构件、结构等方面可以获得很大发展。可以将预应力技术、高强和高性能材料技术、新型结构构件技术等有利于提高构件性能的技术用在预制构件上。可以将隔震和消能减震技术、人工塑性铰、加设支撑、关键部位性能提升技术、主次结构设计技术等有利于提高结构性能的技术应用在建筑结构上。发挥叠合构件部分现浇处理的优势,与建筑和设备专业配合 ...
林树枝, 石建光
core
Jianzhu Gangjiegou Jinzhan, 2023 为研究钢桁腹-混凝土组合箱梁的畸变效应，根据其结构特性和力学特性，考虑共同工作区对组合箱梁腹杆纵向刚度的贡献，提出一种更适用于该类组合箱梁的畸变扇性坐标分布模式。采用新畸变中心定义符合钢桁腹-混凝土组合箱梁畸变变形特征的畸变角，应用能量变分法建立畸变控制微分方程，并给出包含Krylov函数的初参数解。结合数值算例，分析钢桁腹-混凝土组合箱梁在均布畸变荷载作用下的畸变翘曲正应力，并通过有限元软件ANSYS验证所推导理论的正确性。通过改变腹杆壁厚、俯角等关键参数，探究其对畸变内力的影响规律。结果表明 ...
李永鹏, 丁南宏, 冀伟
doaj
Jianzhu Gangjiegou Jinzhan, 2015 以开孔率为变量,分别对4根腹板开矩形孔口的蜂窝梁和蜂窝组合梁进行了抗剪试验。对比分析了两者的抗剪破坏特征,承载力及剪力-位移曲线。给出考虑楼板组合作用后蜂窝梁抗剪承载力的提高结果。结合修正后的有限元计算模型,对比研究不同开孔率、翼缘尺寸对矩形孔口蜂窝梁和蜂窝组合梁抗剪承载力的影响。对不同混凝土楼板尺寸影响下的矩形孔口蜂窝组合梁进行抗剪性能分析。结果表明:开孔率对矩形孔口蜂窝组合梁和蜂窝梁抗剪承载力影响较大;翼缘厚度对开孔率较小的矩形孔口蜂窝梁抗剪承载力有一定提高,对蜂窝组合梁影响较小 ...
贾连光, 杨建华, 刘永方
doaj
Jianzhu Gangjiegou Jinzhan, 2022 近年来，随着装配式施工的推广，钢-混凝土组合结构的应用越来越广泛。钢-压型钢板混凝土组合梁是组合结构中的常用构件。钢-压型钢板组合梁是通过抗剪连接件将钢梁与压型钢板混凝土组合楼板连接成一个共同工作的整体结构构件，组合梁中通常采用栓钉作为抗剪连接件。因此，对钢-压型钢板混凝土组合梁栓钉连接件的受剪承载力进行准确评估和计算具有重要的工程应用价值。为了获得较理想的栓钉连接件受剪承载力计算模型，对国内外压型钢板组合梁栓钉连接件承载力的研究进行了综述，并收集了相关推出试验的数据 ...
许兰兰, 胡夏闽
doaj
A comparative study of the buffeting properties of FRP and steel box girder cable-stayed bridges [PDF]
, 2016 2011-2012 > Academic research: refereed > Publication in refereed journalVersion of ...
Bai, YL, Dai, JG, Ou, JP
core
Exploration and prediction evaluation on causative factors of water inrush from separation layers of mining overburden in coal mines [PDF]
The occurrence of mine water inrushes is common and poses significant hazards in various mining areas throughout China. However, the existing regulations lack of specific engineering geological and hydrogeological exploration guidelines tailored to the ...
Mengnan LIU +6 more
core +1 more source