太阳能光伏建筑一体化（续2）

（上接2009年第10期第937页）4．9武汉日新科技光伏工业园光伏建筑一体化并网电站 武汉日新科技光伏工业园是目前中国最大的太阳能光伏建筑一体化（BIPV）并网发电综合示范园区和产业化基地。项目位于武汉东湖开发区日新科技光伏工业园，总投资6605万元，设计规模1．2～1．4MW．年发电量160～180万kW·h，相当于节约标准煤648t，减排二氧化碳1697．76t，二氧化硫38．88t。     

对建筑项目工程决策阶段与设计阶段造价控制的探讨

论述了工程造价在设计阶段的重要性,及其在工程建设过程中的重要地位,从分析项目设计阶段和设计阶段工程造价控制的现状和存在的问题入手,结合这两个阶段的实际特点,对其中影响工程造价的因素进行了分析,较为详细地阐述了相应的造价控制方法。     

太阳能光伏建筑一体化（续1）

3．2设计重点 （1）建筑设计应与光伏系统设计同步进行。建筑设计根据选定的光伏系统类型,确定光伏组件形式、安装面积、尺寸大小、安装位置;了解连接管线走向;考虑辅助能源及辅助设施条件;明确光伏系统各部分的相对关系。然后,合理安排光伏系统各组成部分在建筑中的位置,并满足所在部位防水、排水等技术要求。建筑设计应为光伏系统各部分的安全检修、光伏构件表面清洗等提供便利条件。     

连续钢-混结合梁施工技术

本文结合重庆轨道交通一号线（沙大段）采用44.5＋60＋44.5 m 三跨连续钢-混结合箱梁跨越渝遂高速公路,介绍钢混连续结合梁的钢梁制作、吊装架设及混凝土桥面板一次现浇的施工方法。     

CFG桩在处理高速公路软基中的应用

桥头跳车是桥台和路基之间产生差异沉降引起车辆行驶颠簸的一种现象,减缓桥头跳车现象是困扰工程界的一个难题。很多学者对桥头跳车现象产生的机理和解决措施进行了研究,虽然桥头工后沉降过大的问题得到了较好地解决,但是在处理路段与未处理路段衔接处。又产生了新的沉降突变,即所谓的“二次跳车”,选择合适的地基处理方法来处理这个问题,是减缓桥头跳车问题的关键所在^[1-5]。     

经过桐油、糯米汁改性粘土的土工特性

为避免填埋场的渗漏,填埋场垫层需要低渗透性和吸附能力强的材料。目前国外普遍利用GCL,GCL可适当减薄粘土衬垫厚度,但不能被取代^[1]。在众多历史文献中,都提到我国古代传统的城墙和宫殿墙体是掺糯米汁等材料建筑而成。具有很高的强度。这种建筑技术凝结了历代工匠的智慧,经受住了时间的考验。值得如今建筑界人士仔细研究、吸收和发扬^[2]。而桐油是重要的战略物资,具有良好的防水性。糯米汁和桐油可以很好地弥补粘土渗透和强度的缺陷。     

公路软土地基沉降变形的研究

对于公路深厚软土地基（厚度大于10m,地基承载力特征值小于80kPa）,采用二灰桩与深层搅拌桩联合加固,能充分发挥二灰桩与深层搅拌桩两者加固较厚软土地基各自的优势,应用二灰桩与深层搅拌桩联合加固深厚软土地基,具有特殊的适用性。     

Flexural behavior of hybrid fiber reinforced high performance concrete deep beam

In order to reveal the flexural behavior of hybrid fiber reinforced high-performance concrete deep beam, 16 high-performance concrete deep beams of different fiber volume content have been tested according to the state standards and testing methods. The effects of hybrid fiber on the yield moment and bending bearing capacity of the cross-section have been analyzed, the calculation method for the bending capacity＇ is discussed and the propositional formula are provided as well. Results shoxv that the flexural properties increased obviously when add ≤1.0% of volume content steel fibers and ≤0.11% of volume content polypropylene fibers in to deep beam. The results are useful to the further amendments of fiber reinforced concrete structure technical regulation （CECS 38：2004）.     

Experimental study of traffic-induced vibration of the new CCTV headquarters building

The traffic-induced vibrations of the new CCTV Headquarters building are studied stages. In the first stage when the through experiments in two 30th floor of the northwest tower and the 38th floor of the southeast tower were finished, the traffic flows on the roads surrounding the building were investigated, and 27 setups of accelerations were measured at the roadside, on the pile cap and on the 9th floor. In the second stage when the whole steel structure was completed, l 5 setups of accelerations were measured at the roadside, on the pile cap and on the 37th and the 48th floors. The accelerations of the building under different traffic flows, in different positions are analyzed in both time domain and frequency domain. The damping ratios are estimated by the upgraded half-power bandwidth method.     

Hilbert-Huang transform based noise filtering for the identification of structural systems

This paper proposes an enhanced noise filtering technique to the Hilbert-Huang transformation technology for the identification of structural systems using vibration measurements. The Hilbert-Huang transformation technology is a set of superior algorithms non-stationary signals and also for analyzing non-linear and offers increased accuracy for linear and stationary signals. However, the signals are filtered by reconstruction from ＂＇selected＂ intrinsic mode functions （IMFs）, derived from the original signal through the empirical mode decomposition method. The proposed filtering technique offers the criterion for selecting the IMFs using the orthogonalization coefficient. In addition, a simple free vibration modal analysis has been resolved for the evaluation of the modal damping ratio. Through the enhanced filtering, it is possible to increase the accuracy for the estimation of the time-varying system＇s natural frequency and the damping ratio, indicative of the degree of damage, which helps an effective design of a control system.     

关于国家大剧院的噪光问题

国家大剧院于2008年初正式投入使用。我们参与了由国家环保总局主持的对国家大剧院的环境保护国家验收。负责噪光问题的评估工作。     

钢构件的三点定位法、垂直面补偿法测量技术

常规的钢结构安装施工的构件定位作法是在构件上先画出标高线、十字中心线,安装时对准中心线,再调整其标高即能进行准确定位。但随着空间结构的发展,建筑造型丰富多彩,异形构件大量出现。弯扭杆件、多曲面相交的节点构件形状复杂,甚至全是斜面,根本无法画出与轴线对应的中心线和标高控制点,其安装定位有很大的难度。仍用常规方法进行形状复杂构件的安装定位,则很困难、不科学,费工费时还达不到精度标准,甚至造成质量事故。     

Seismic analysis of a long-span continuous steel truss-arch bridge across the Yangtze River

In this paper, an FEM （Finite Element Method） model is established for the main span of the bridge, with the main box arch and suspender members modeled by beam elements, truss members by truss elements, and the orthotropic steel deck by plate elements. The natural frequencies and mode shapes are acquired by the eigen-parameter analysis. By input of a typical earthquake excitation to the bridge system, the dynamic responses of the bridge, including the displacement and accelerations of the main joints of the structure, and the seismic forces and stresses of the key members, are calculated by the structural analysis program, based on which the main laws of the seismic responses of the bridge are summarized, and the safety of the structure is evaluated.     

The leasing operation of research of the office building market in China

The article analysis the external market environment and the situation of requirement and the competitor in market of office building with the same rank and the same type according to market research, the aim is to research the whole processing operation and management, including making the marker orientation, confirming and finding the potential lesse making the rent plan, negotiating and signing the contract.     

The establishment of 3D visualization modeling for the jointed slope

The 3D visualization model of slop with structural plane can displayed the characters of structural plane in slop directly, and illustrated the spatial combination. It is a modem and critical question in the field of geotechnical engineering. Based on the peculiarity of the reconnaissance and the research of the visualization by formers, systemized the method fit for building 3D visualization model of slop with structural plane. Write the special program with Visual C^-＋ computer language and illustrated it by OpenGL, the program can displayed and captured the random section plane. The program has a satisfied result by proving with the real projects.     

Helicoidal shell response to earthquake loads

This paper studies and analyzes the response of helical stairs as helicoidal shells in earthquake zones. The response of helical stairs under gravity loads was analyzed by both the membrane theory and finite element methods. The non-linear response of helical stairs, when subjected to UBC （Uniform Building Code） dynamic and static equivalent earthquake loads, were obtained using finite element models. These responses were compiled and analyzed in order to draw recommendations for the preliminary design of helical stairs in earthquake zones. The analysis of the results obtained showed that helical stairs are stiffer and lighter than regular ones.     

Study on the biaxial tensile strength of special made concrete based on the Hill theory

This paper mainly studies on the biaxial tensile strength and its calculative formula of a special made concrete. According to the Hill theory and the uniaxial tensile experiment results, the expression of the concrete biaxial tensile strength is deduced, which is then combined with experiment data and checked. The result shows： the biaxial tensile strength of this kind of concrete is about 15%-30% lower than its uniaxial tensile strength, and the calculative value is basically consistent with the experiment value, with less than 11% difference. This kind of biaxial tension weakening effect is very important to the structure designs of concrete road. The author suggests further research.     

A statistically refined Bouc-Wen model for the identification of structures under tri-directional seismic excitations

This paper presents a statistically refined Bouc-Wen model of tri-axial interactions for the identification of structural systems under tri-directional seismic excitations. Through limited vibration measurements in the National Center for Research on Earthquake Engineering in Taiwan conducting model-based experiments, the 3-D Bouc-Wen model has been statistically and repetitively refined using the 95% confidence interval of the estimated structural parameters to determine their statistical significance in a multiple regression setting. When the parameters＇ confidence interval covers the ＂null＂ value, it is statistically sustainable to truncate such parameters. The remaining parameters will repetitively undergo such parameter sifting process for model refinement until all the parameters＇ statistical significance cannot be further improved. The effectiveness of the refined model has been shown considering the effects of sampling errors, of coupled restoring forces in tri-directions, and of the under-over-parameterization of structural systems. Sifted and estimated parameters such as the stiffness, and its corresponding natural frequency, resulting from the identification methodology developed in this study are carefully observed for system vibration control.     

关于高校建设工程廉政建设的一些思考

近年来,在高等院校建设项目日益密集的情况下,高校建设中出现的腐败问题也日益严重。如何在工程建设中做好廉政建设,避免职务犯罪和腐败发生已成为高等院校良性、健康发展所要解决的重大问题。本文就西安医学院在新校区建设工程领域廉政建设实施情况做了总结和思考。     

Experimental study on mechanical property of stiffening-ribbed-hollow-pipe cast-in place reinforced concrete girderless floor

Stiffening-ribbed-hollow-pipe cast-in place reinforced concrete girderless floor is a new-style hollow girderless floor system. Model experimental researches of simply-supported floor and four-corners bearing floor have been done on this new kind of floor system in this paper. The experiment results show that the floor system has good mechanical property such as high bearing capacity, big rigidity and good tensility. A theoretical method is presented in this paper that the stiffening-ribbed-hollow-pipe girderless floor can be analyzed by being converted equivalently to orthotropic solid slab. It is indicated that the method is correct and reasonable according to the contrast between theoretical calculated results and experimental measured results. The theoretical results coincide with the measured results well.