锦园五洲风情工程结构设计的若干特点

锦园五洲风情项目的地基条件复杂,地下水位过高,设计局部采用抗浮桩来抵抗过大的水浮力。为了满足建筑功能和造型的要求,通过设置加强后浇带、加强保水养护等措施解决了处理超长地下室的问题,用预应力结构配合钢结构来满足复杂建筑入口造型的要求。工程设计获中国现代优秀民族建筑综合金奖。其设计处理方法可供同类工程设计参考。     

Evaluation of image-based modeling and laser scanning accuracy for emerging automated performance monitoring techniques

Accurate and rapid assessment of the as-built status on any construction site provides the opportunity to understand the current performance of a project easily and quickly. Rapid project assessment further identifies discrepancies between the as-built and as-planned progress, and facilitates decision making on the necessary remedial actions. Currently, manual visual observations and surveying are the most dominant data capturing techniques but they are time-consuming, error-prone, and infrequent, making quick and reliable decision-making difficult. Therefore, research on new approaches that allow automatic recognition of as-built performance and visualization of construction progress is essential. This paper presents and compares two methods for obtaining point cloud models for detection and visualization of as-built status for construction projects: (1) A new method of automated image-based reconstruction and modeling of the as-built project status using unordered daily construction photo collections through analysis of Structure from Motion (SfM); (2) 3D laser scanning and analysis of the as-built dense point cloud models. These approaches provide robust means for recognition of progress, productivity, and quality on a construction site. In this paper, an overview of the newly developed automated image-based reconstruction approach and exclusive features which distinct it from other image-based or conventional photogrammetric techniques is presented. Subsequently the terrestrial laser scanning approach carried out for reconstruction and comparison of as-built scenes is presented. Finally the accuracy and usability of both of these techniques for metric reconstruction, automated production of point cloud models, 3D CAD shape modeling, and as-built visualizations is evaluated and compared on eight different case studies. It is shown that for precise defect detection or alignment tasks, image-based point cloud models may not be as accurate and dense as laser scanners' point cloud models. Nonetheless image-based point cloud models provide an opportunity to extract as-built semantic information (i.e., progress, productivity, quality and safety) through the content of the images, are easy to use, and do not need add burden on the project management teams by requiring expertise for data collection or analysis. Finally image-based reconstruction automatically provides photo alignment with point cloud models and enables image-based renderings which can remarkably impact automated performance monitoring and as-built visualizations.     

城市规划中历史街区的保护与更新

论述了历史街区保护与更新现存的一些问题和错误认识，针对这些问题与错误认识提出了两种保护与更新的模式，并通过两个安全对这两种模式进行验证，使这两种模式具有可操作性。     

城市桥梁建设的环保与景观问题

依据环境工程学及桥梁美学的相关理论，对城市桥梁建设的环保和景观问题作了分析，介绍了桥梁灯光照明设计的原则和设计要点，以处理好桥体自身美观与环境的协调。     

福州白马大厦工程钢管混凝土柱的节点设计与施工

钢管混凝土结构具有强度高、塑性和韧性好、耐火性能好和施工方便等优点,在建筑结构中得到广泛应用。本文结合福州白马大厦工程,对钢管混凝土的节点设计和施工进行介绍,为此类工程提供借鉴。     

屈服强度550MPa高强冷弯薄壁型钢轴压构件承载力设计

高强冷弯薄壁型钢结构在国外低层住宅和门式刚架体系中应用较广,国内已开始采用,但尚无相应设计规范可依。针对屈服强度550MPa高强钢材冷弯薄壁型钢结构常用的轴压构件的承载力设计方法进行了研究,包括其承载力计算模式及设计可靠度分析,并据此提出了相应的设计方法。最后,通过国内外现有相关试验数据的分析,验证了所提出的强度设计指标及承载力设计方法的合理性与可靠性。     

基于GIS技术的公路工程路线设计系统的探讨

主要针对传统公路工程路线设计模式和方法所存在的不足之处，提出了基于GIS技术的公路路线设计系统开发的必要性和可行性，并就开发中的一些主要问题进行研究和探讨，提出系统开发的基本内容和思路。     

谈广东肇庆市羚山污水处理厂规划与建筑设计

结合某污水处理厂工程概况，介绍了该厂的设计理念，从总体布局、交通组织、绿化布置等方面进行了规划设计，并对厂区建筑设计进行了阐述，以使现代工业厂区的设计更具先进性和经济性。     

浅谈多层钢结构工业厂房的设计

介绍了多层轻钢结构厂房的特点，从其结构体系、柱网布置、支撑体系、节点构造、围护结构等方面，论述了多层轻钢厂房的结构布置形式，提出了多层轻钢厂房的计算与设计要求。     

桥梁的健康研究

为深化对桥梁性能、质量和维护问题的认识，提出了桥梁健康的概念，分析了桥梁设计、施工、使用阶段影响桥梁健康的主要因素。根据这些影响因素的特征，提出了桥梁健康研究应该注重的基本思路和主要方法，包括系统化研究、不确定性研究、全寿命分析、健康优化研究等。文中提出的桥梁健康的有关理论对桥梁设计、施工和使用都有一定的参考价值。