深长桩力学性态计算分析

首先阐述了基于能量守恒定律的单桩沉降计算方法,通过计算总结出桩身轴力和桩身沉降分布的一般规律.分别计算不同桩长、桩径、桩体弹性模量、桩侧极限摩阻力条件下深长桩桩身轴力和桩身沉降的分布特点,探讨各参数变化对深长桩力学性态的影响.结果表明,桩长、桩径、桩体弹性模量、桩侧极限摩阻力的变化对深长桩力学性态均有显著影响,且随荷载水平的变化而变化.     

我国消防法律体系现状的探讨

对我国消防法律体系现状进行了较为全面的讨论。参照部分国家在消防法律体系方面的立法经验,分析了我国消防法律体系建设存在的问题,剖析了存在问题的原因。     

旧城改造强制拆迁中应注意的法律问题

旧城改造中 ,如何依法对“钉子户”进行强制拆迁 ,成为各地拆迁建设的难点、热点问题。文章运用法律、法规 ,密切结合强制拆迁工作实际 ,对强制拆迁对象及方案的确定、强制拆迁前需完成的法定事项、强制拆迁力量的组织、实施强拆时的重要环节、强制拆迁后多种争议的跟踪解决进行了较深入的探讨     

浅论项目全额承包中的成本管理

针对项目法施工中的全额承包活动，及对项目经理部如何搞好全额承包中的成本管理进行了简要的分析和论述。提出了在新的建安工程费用项目划分规定下，全额承包基数的确定原则和方法；对于项目施工过程中的成本管理，进一步分析了完善企业施工定额的意义，提出了成本计划的编制原则及方法，以及施工中成本的控制原则。这些方法和原则对完善施工企业内部承包责任制，提高企业法人及项目承包两个方面的积极性以及增进企业全员的经济效益观念均具有重要的作用。     

膨润土中饱和渗透系数的计算

 当土工合成黏土衬垫用作垃圾填埋场衬垫时，渗滤液可能对其渗透性能产生重要的影响。为克服渗透试验可重复性差和试验时间长等缺点，从微观角度对土工合成黏土衬垫的饱和渗透系数进行研究。首先，以现有的膨润土微观结构的研究成果为基础，结合SEM方法对膨润土微观结构的分析结果，得出粒内孔隙比随CaCl2溶液浓度的变化规律。然后，将膨润土看作双重孔隙介质，推导出粒间孔隙内凝胶态蒙脱石矿物层间距离的计算公式。最后，根据Poiseuille定律，得到能够考虑CaCl2溶液浓度和孔隙比变化的膨润土饱和渗透系数的改进计算方法，并通过计算渗透系数与实测值的比较验证了这种渗透系数计算方法的有效性。结果表明，膨润土饱和渗透系数的变化是由表观孔隙率和凝胶体蒙脱石层间距离的共同作用引起的。     

Behaviour of Grade 8.8 bolts under natural fire conditions—Tests and model

Recent full-scale experimental tests performed on steel and composite structures have demonstrated that the presence of tensile forces in axially-restrained beams during the cooling phase of a fire could lead to bolt failures. In order to understand this observation and design structures that are not prone to such a failure mode, it is essential to have a deep knowledge of the material behaviour of all the components, including bolts, during both the heating and cooling phase.In the present article, the test set-ups and the results of the tensile and shear tests performed at the Centro Sviluppo Materiali (Italy) on Grade 8.8 bolts under heating-cooling cycles are described.Then, material laws are defined for characterising the mechanical behaviour of Grade 8.8 bolts under heating and cooling phases. These laws account for the non-reversibility of the mechanical properties of Grade 8.8 bolts.     

Indoor air quality and the law in Singapore

With the greater use of air-conditioned offices in Singapore, achieving good indoor air quality has become an important issue. The laws that impose duties upon designers and contractors with respect to the design and construction of air-conditioning and mechanical ventilation (ACMV) systems are set out in the Building Control Regulations and the Singapore Standard Code of Practice for Mechanical Ventilation and Air-conditioning in Buildings (hereinafter "SS CP 13:1980"). ACMV maintenance is governed by the Environmental Public Health Act, the Building and Common Property (Maintenance and Management) Act, and the Land Titles (Strata) Act, as well as by lease or tenancy agreements. Designers, contractors, developers, building owners and management corporations may also be liable to the workers, occupants and other premises users for indoor air quality (IAQ)-related injuries under the general principles of contract and tort. Recently, the Guidelines for Good Indoor Air Quality in Office Premises was issued by the Ministry of Environment to complement SS CP 13:1980 toward improving the indoor air quality of air-conditioned office premises. Although the Guidelines have no statutory effect, they may be adopted as contractual requirements in construction, lease and maintenance contracts. They may also be used to determine the relevant standard of duty of care required to discharge tortious liability. This paper looks at the existing laws and rules affecting the design, construction and maintenance of air-conditioned offices in light of Part III of the Ministry's Guidelines.     

深入贯彻<会计法>努力消除会计信息失真

就会计信息失真的屡查不止的恶劣现象，从主观和客观两方面分析了其原因，指出要彻底消除这一现象，既要不断提高会计人员的职业道德水平和业务素质，又要不断强化企业内部的制约和监督体系，加大执法力度。     

上海铁路南站屋盖表面风压特性试验研究

对上海铁路南站结构模型进行了风洞试验,分析了该结构屋盖表面平均及脉动风压的分布规律,对比了两者的异同并指出造成这种差别的原因,比较了这一大跨度屋盖结构在无周边建筑和有周边建筑情况下屋面的风压分布特性。将极值风压系数与平均风压系数进行了比较,最后分析了屋盖表面测点风压自功率谱及互功率谱的特性。