Based on the reversed cyclic loading test of three 1∶4 high-strength concrete flat columns,the computer program ABAQUS was used to simulate behaviors of the specimens.Concrete in the column was modeled using the damage plasticity material model,and a uniaxial steel model with combined isotropic and kinematic hardening properties was used to simulate the behavior of the reinforcement.The establishment of the finite element model,definition of the material parameters and the influence of diagonal reinforcement were discussed at length.The results show that the concrete damage plasticity model can be well used for hysteretic analysis of reinforced concrete members if the relevant parameters are reasonably defined.Diagonal reinforcements can not significantly improve ductility of the specimens,but can improve their shear capacities.This paper can provide reference for the performance simulation of reinforced concrete members under cyclic loading.

关键词：对角加固;高强混凝土;平柱;循环荷载

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2012年以来，在市委、市政府的正确领导下，我市立足于建筑产业化“千亿产业”目标，敢为人先、主动作为，加大招商引资力度，加快试点项目进程，先后引进了一批龙头企业，陆续开工建设了一批示范项目，全市建筑产业化工作取得了令人瞩目的成就，受到国家住房和城乡建设部和省住建厅的肯定，在行业内引起广泛关注。在去年lo月份住房和城乡建设部主办的第十二届“中国国际住宅产业博览会”上，合肥市人民政府应邀在大会上作经验交流，合肥市建筑产业化工作“起步快、做法实、效果好、后劲足”的特色，受到了广泛关注和好评。

关键词：合肥市；建筑产业化；新台阶

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This thesis is part of a larger project that will demonstrate the feasibility of powering a commercially sized 7.5-ton cooling system. Excess cooling will be stored thermally using ice. This system has the potential to be used in military bases to reduce energy costs and fossil fuel consumption. A scaled down version would be suitable for data centers and forward operating bases where the transport of fuel can be costly and dangerous. The system will be built and operated at the Turbopropulsion Laboratory (TPL) of Naval Postgraduate School. This thesis concentrates on the choice and location of wind turbines used to power the cooling system. A simulation of Building 216, which is the planned site of the cooling system, was performed. A wind flow analysis found that optimum placement of the wind turbines is at the front of the south end of the building. The method for placing the wind turbines is outlined and applicable to other structures. Vertical Axis Wind Turbines (VAWTS) were found to be the most suitable for site location. A transient analysis of the VAWTS was necessary to accurately simulate their performance. This supported the selection of a three-bladed helical VAWT design. Further simulations of wind turbine separation showed some beneficial effects of close spacing.

关键词：空气流量;计算流体动力学;制冷和通风设备;风能

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2014年1～5月，我国经济回升的基础仍不够稳固，微刺激政策相继出台。供求方面，全国固定资产投资增速继续趋缓，房地产投资进入调整阶段，对建筑业需求影响较大，建筑业总产值继续回落，新签合同价款同比大幅下滑；投资方面，整体增速呈现回暖势头，好于去年同期；成本方面，建筑材料工业生产者价格指数环比下降0.23个百分点，回暖形势艰难。未来经济下降压力依然存在，房地产市场低迷对总需求的抑制作用还将加强，上半年中国经济将继续回落。现有政策还不足以抵消经济自身下滑的压力。微刺激政策有加码迹象，基础建设投资有望保持较快增长，建议投资者重点关注交通基础设施、水利工程等。

关键词：建筑；房地产；投资；总体形势

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AEC software facilitates rapid and error-free construction, including of large and complex industrial plants, multi-industry international exposition centers, and submarines in the Construction industry. It improves the efficiency of construction and engineering processes by providing 3D as well as 2D simulation models to end-users. Thus, the effective use of AEC software helps improve the output of the Construction industry.

关键词：AEC软件；建设；提高；建筑工程；流程的效率

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2014年1季度，我国宏观经济仍然面临下行压力。建筑业景气指数持续走低，企业家信心不足。需求方面，由于全国固定资产投资增速继续回落，建筑业总产值增速下滑，建筑业需求偏弱。投资方面，建筑业固定资产投资增速出现回落，未能延续回升势头。成本方面，建筑材料工业生产者价格指数环比微降，但仍位于100以上，成本压力不减。在新城镇化建设的推动下，建筑业将保持平稳增长态势。西部大开发，铁路融资体制改革、棚户区改造、大规模保障房建设也将为建筑业需求带来强力支撑。此外，利好政策频出，绿色建筑、智能建筑发展将加速。

关键词：建筑；总体形势

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3月，春节过后，随着建设施工陆续启动，建材产品需求开始缓慢复苏，水泥和平板玻璃产销量均有所回升。价格方面，由于需求尚未全面复苏，整体水平仍偏低，水泥价格下跌，玻璃价格低位震荡。出口方面，出口形势转好，水泥和平板玻璃出口量均有所上升。
预计4月，建设施工将全面启动，建材行业将进入旺季，需求将明显增强，水泥和平板玻璃产销量将继续回升，价格有望得到反弹。

关键词：建材；总体形势

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测试了钢桥面铺装用环氧沥青结合料-30～20℃的动态热机械性能(DMA),并用扫描电镜(SEM)观察了拉伸试件的断口；采用单边切口小梁试件进行了-20,-10,0,10℃的混合料断裂性能试验.结果表明:交联度为58.4％,67.3％,71.4％,75.3％的4种环氧沥青混合料断裂韧度随着温度的提高而降低,断裂能随着温度提高而增大；高交联度混合料的断裂韧度和断裂能变化幅度小,低交联度混合料的断裂韧度和断裂能变化幅度大.4种交联度环氧沥青混合料的断裂韧度、断裂能与结合料动态模量或交联度、温度具有较好相关性.断口扫描电镜照片表明,低交联度的环氧沥青交联网络撕裂后会形成凹凸不平的表面,有利于受力时吸收更多的能量,从而使体系具有更大的抗开裂能力.

关键词：环氧沥青；混合料；断裂；交联度

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采用SEM和XRD等技术手段,探讨了石灰陈化过程机理及其在文物保护中应用的可行性.结果表明,石灰在陈化过程中,随着陈化时间的增加,氢氧化钙的粒径呈现逐渐减小的趋势,形成了直径约50 nm、长度约200 nm的针状氢氧化钙,以及粒径为100～200 nm的板状氢氧化钙；陈化石灰的纳米粒径和高反应活性较好地改善了陈化石灰糯米灰浆的抗压强度、表面硬度等物理性能,并使陈化石灰-乙醇分散液具有良好的渗透性,可较好地解决传统石灰水加固剂溶解度较小和渗透性较差的问题,为其在砖、石、土质文物保护中的应用奠定科学基础.

关键词：陈化石灰；糯米灰浆；土遗址；加固

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研究了木素磺酸钙(CLS)、改性木素磺酸钙(GCL1-6A)、氨基磺酸甲醛缩合物(ASP)、萘磺酸甲醛缩合物(FDN)和磺化三聚氰胺脲醛树脂(SMUF)这5种常用减水剂对水泥砂浆抗渗性、抗碳化性和收缩性等耐久性指标的影响.结果表明:掺SMUF的水泥砂浆其长期性和耐久性最优,其次是掺GCL1-6A,FDN的水泥砂浆,而掺CLS的水泥砂浆最差.

关键词：减水剂；水泥砂浆；耐久性

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