福州琅岐闽江大桥防水粘结体系施工技术

介绍了福州琅岐闽江大桥防水粘结体系的选择及Hedisumer-MMA体系的防水设计,详细阐述了该桥面抛丸除锈、防水粘结体系的施工工艺流程,并提出了相关施工注意事项。     

福州市琅岐闽江大桥钢梁设计

流线型扁平钢箱梁作为斜拉桥的加劲梁具有良好的力学和气动性能。以福州市琅岐闽江大桥为例,简要介绍扁平斜拉桥钢箱梁结构构造设计、立面线型的实现、抗风震措施和施工过程中的临时约束设计,以丰富扁平钢箱加劲梁在桥梁设计领域中的应用经验。     

琅岐大桥翼缘板裂缝专项研究

对琅岐大桥T梁翼缘板及其根部对应的桥面铺装普遍存在的纵向裂缝作了外观检查,通过现场试验和有限元分析,探讨了该种裂缝的产生原因,指出在设计荷载允许的范围内该裂缝对桥梁的安全性没有影响。     

浅谈琅岐闽江大桥钻孔平台设计与施工方案

福州市琅岐闽江大桥主塔墩桩基位于深水中,采用水上搭设钻孔平台进行施工,施工难度大,本文重点阐述该桥钻孔平台的设计与施工方案。     

脉冲澄清池在琅岐海峡水厂中的应用

琅岐海峡水厂是福建省第一座采用上向流炭吸附反应脉冲澄清池的水厂。通过脉冲澄清池的应用优势,阐明其在琅岐海峡水厂的应用合理性,并介绍主体设计参数和优化的设计细节。脉冲澄清池在5 NTU低温、低浊及正常浊度小于等于30 NTU情况下,可保证出水浊度不大于3 NTU;原水浊度小于1 000 NTU时,出水浊度不大于6 NTU;暴雨期1 000 NTU及以上浊度情况下,出水浊度可保证在10 NTU以内。同时,脉冲澄清池设备少,运行管理精度要求高,今后需在运行管理方面进一步关注,积累经验。     

浅析福州市琅岐沈海高速复线连接线道路现浇桥工程

以琅岐沈海高速复线连接线道路现浇桥工程为例,从支架施工、模板施工、砼施工、预应力施工等方面进行了详细阐述,确保了工程方案的实用性和可行性。     

琅岐环岛路综合管廊施工质量控制和监督要点浅析

分析了琅岐环岛路综合管廊所处位置的地质条件,结合设计文件,从施工材料、施工顺序、施工分项、施工节点等方面的分解入手,对该工程施工质量控制进行分析,总结出了该工程的监督要点,提高了质量管控水平,为工程的保质完成提供了有力保障,为将来其它类似的工程提供可参考的经验。     

琅岐环岛路二期地下综合管廊工程设计分析

结合福州市琅岐环岛路二期地下综合管廊工程,阐述了综合管廊的设计要点,详细介绍了管廊的工艺设计、结构设计及施工方法,并阐述若干设计体会:一是对于软土地基上建设综合管廊,建议管廊结构基底与道路路基处理形式尽量一致;二是利用顶管穿越河道,应足够重视顶管节段之间以及顶管与沉井之间的防水设计;三是设计软土路基上的综合管廊应考虑路基施工对综合管廊的影响。     

琅岐闽江大桥静力三分力及涡激振动特性试验研究

利用大型通用有限元软件ANSYS对福州市琅岐闽江大桥进行了结构动力特性的分析,并采用几何缩尺比为1∶50的主梁节段模型,进行了琅岐闽江大桥主梁三分力的静力节段模型及涡激振动特性的动力节段模型风洞试验。由静力试验求得三分力系数,并进行了全桥静力响应分析,通过动力节段试验测定发生涡激振动的发振风速及相应的最大振幅,确定了主梁断面的斯托罗哈数,从而对主梁的涡激振动特性进行初步评价。     

浅谈复杂地质条件下顶管工程施工措施

本文结合琅岐环岛路污水顶管工程,就复杂地质条件下顶管工程采取的施工措施作简要的介绍。     

旅游地产规划设计探究

对旅游地产的规划设计进行研究与探索,结合福州市琅岐岛国际旅游度假区规划设计案例具体分析,提出结合环境、生态创新的旅游地产开发规划理念,旨在为旅游地产的开发建设提供可供操作的、自然景观格局协调的规划设计方法。     

基于生态保护的海岛型乡镇多情景规划探讨 ——以福州市琅岐镇为例

海岛是陆海交界的特殊生态区域，随 着城市化进程的推进，海岛面临的生态风险日 益增加。基于福建省海岛的调查研究，针对海岛 发展存在较大不确定性的现实背景，以海岛型 乡镇为切入点，提出了“生态问题识别—情景预 设—情景模拟—动态兼容”的多情景海岛空间 规划方法，从而适应不同生态水平的海岛开发 利用要求，避免城镇发展造成海岛生态环境的 严重破坏。并以位于河口的海岛型乡镇——琅岐 镇为例进行实证研究。在此基础上，从规划修 改与调整、规划衔接与传导以及规划弹性与时 序等方面，探讨了基于生态保护的多情景动态兼 容规划的具体应用。     

生态旅游岛控制性详细规划控制体系探析——以福州市马尾新城琅岐岛控制性详细规划为例

本文从生态旅游岛的特点出发,在对城市控制性详细规划控制要素比较分析的基础上,对生态旅游岛控制性详细规划的控制要素构成做了必要的调整和扩展,提出土地使用控制、环境容量控制、建筑风貌控制、配套设施控制、非建设用地控制、行为控制和其他控制等七大主题的控制体系,并以福州市马尾新城琅岐岛控制性详细规划为例,对生态旅游岛的控规的控制体系进行进一步的规划探索。     

A Plan-Based Framework for Design: Methodologic Foundations

Abstract: This paper describes a plan-based framework that can be configured for design in different domains. The case for design by planning is argued by examining the requirements of an adequate framework for design and showing how the planning approach satisfies the requirements. Using the plan-based framework, the knowledge requirements of design, design transformations, multiagent design, learning, and creativity are explored. Multiagent design can be realized through delegated planning; and learning, through the chunking of successful design plans into summary plan operators. Routine design is shown to be equivalent to the reuse of stored design plans as summary plan operators; innovative design, to the combination and modification of previous plans; and creative design, to the automatic creation of new plan operators from domain axioms. An example of the conceptual/preliminary design of a light industrial building performed by a prototype plan-based system is described.     

Applying design science approach to architectural design development

Unlike research methods for social and positivist sciences, those for architectural design lack a discipline-specific conceptual framework. Performative science aims at producing outcomes for future use and therefore needs a robust methodological approach that encompasses different techniques and methods supporting an evidence-based architectural design development. This study suggests that design science can be successfully applied to architectural design development and provides architects and designers with a powerful tool bridging the gap between research and design. In so doing, this study explores the application of design science to implement a user-centered design approach. A design challenge is reframed within the robust framework of design science by referring to a case study on refugee shelters. The traditional method by which shelter optimization is pursued by designers is questioned by involving the final users through an ethnographic approach within the framework of design science. The design outcome produced through this process is a list of specifications allowing designers to create different architectural solutions and matching the requirements expressed by future users. The authors argue that a user-centered design outcome can be achieved and validated through design science.     

预应力锚索抗滑桩结构稳健优化设计

稳健优化设计是稳健设计与最优化技术、计算机技术的结合,当前已成为工程稳健设计研究的一个热点。按照这种方法进行预应力锚索抗滑桩设计,既能在设计阶段保证工程质量的稳健性,又能利用优化设计中众多数学模型和成熟的求解方法,更好地解决多变量、多目标、带约束问题的求解。针对正交设计的不足,用均匀设计代替正交设计,应用专业软件模拟计算不同工况下预应力锚索抗滑桩结构顶部水平位移,通过多元回归分析,用回归模型y(xi)代替函数模型y(xi)作为目标函数,设计参数作为优化变量,规范及合同要求作为约束条件,提出一种预应力锚索抗滑桩结构稳健优化设计方法。以昆洛路K1+440～K1+780边坡为例,阐述用MATLAB语言进行预应力锚索抗滑桩稳健优化设计的方法。     

A simulation-based method for reliability based design optimization problems with highly nonlinear constraints

Reliability-based design optimization (RBDO) is a topic of interest in the design of economical structures. It allows designers to effectively reach a balanced cost-safety configuration in the design of structures. In this study, a simulation-based method is presented for RBDO problems in which the design variables are treated as random variables. The method works by uniformly distributing samples in the design space and employing a feature that allows the designer to obtain the optimum design solution by performing only one simulation run. Moreover, the proposed feature also helps the designer to use the results of aforementioned run to provide multi-level design solutions when the arrangement of the design problem is changed. The robustness and accuracy of the method are examined by solving design problems with highly nonlinear constraints and comparing with the results of common RBDO methods. The results confirm the robustness of the method for highly nonlinear problems with different design arrangements.     

路基边坡压实机升降机构的优化设计

本应用数学规划法和“最优设计”原理,对ＢＰＹ型路基边坡压实机的升降机构进行了多目标的优化设计。经传统设计校验,该优化方案是理想的。     

Building simulation as assistance in the conceptual design

In order to realize the “design by simulation” concept in the building design, the methodology of applying the building simulation in the building’s conceptual design stage is the main theme discussed in this paper. The conceptual design stage is divided into four sub-stages, and the framework of the design is built by way of the simulation in the conceptual design stage. Moreover, the energy saving potential assessment by the simulation in the preliminary conceptual design stage is also discussed in detail, including the input/output information, the calculation method and procedure, and the requirements and information from architects, etc. The natural ventilation design is used as the first trial in this study, and the difference between the detailed conceptual design and the preliminary conceptual design is also discussed, and the new simulation methodology is further described. The main objective of this paper is to help avoid an incorrect decision in the conceptual design stage, as well as to provide a better base for the energy efficient design in the next stage by means of the building simulation tool.     

基于100年设计使用年限的玻璃纤维增强塑料管管道结构设计研究

玻璃纤维增强塑料管具有优良的水力特性及耐腐蚀性能,可在城市深隧等重大工程结构中使用。这类重大工程的设计使用年限一般为100年,而现行玻璃纤维增强塑料管管道结构设计规范的设计使用年限通常只有50年,缺少基于更长设计使用年限的设计方法在一定程度上限制了玻璃纤维增强塑料管的进一步应用。本文结合结构设计的作用、抗力和结构设计方法三部分内容,指出了不同设计使用年限对玻璃纤维增强塑料管管道结构设计的影响;然后根据其性能特点,重点对其在100年设计使用年限下的抗力进行了分析,确定了两个抗力调整系数,在此基础上建立了基于100年设计使用年限的结构设计的具体方法,并与基于50年设计使用年限的设计结果进行了比较。结果表明,基于100年设计使用年限进行设计时,玻璃纤维增强塑料管的刚度等级不变,但压力等级将提高30%左右。