新型防水材料在广州新白云国际机场某工程中的应用

1 工程概况 轻轨区间位于广州新白云国际机场南航站楼地下二层轻轨站南北两侧,其中南侧同轻轨站接口处区间结构顶板面标高7.392m,底板底标高-0.538m,北侧同轻轨站接口处区间结构顶板面标点6.882m底板底标高-1.048m。区间总长约1.7km,明挖法施工,采用防水卷材外包防水(地下水为弱碱性),防水材料总用量约60000m~3。整个防水系统包括底板、顶板及侧墙立面三个防水部分。     

港珠澳大桥环岛挡浪墙素清水混凝土裂缝控制技术研究

港珠澳大桥东人工岛护岸挡浪墙属于大体积素清水混凝土长墙结构,内部无钢筋。在分段长度为9 m前提下,通过足尺寸模型研究挡浪墙裂缝发展规律,并寻求有效的裂缝控制技术。试验结果表明:不采取内部降温措施情况下,挡浪墙体的内部温升为45.9℃,应变为126×10~(-6),墙体出现3条裂缝;墙体内布设1层和2层冷却水管情况下,内部最高温度分别降低9.2℃和14.1℃;墙体内布设2层冷却水管,控制侧墙与底板浇筑间隔时间不超过10 d,墙体无裂缝产生。     

允许部分越浪海堤设计在工程中的应用

结合长兴岛电厂圩滩涂圈围工程允许部分越浪的海堤断面，对堤顶高程、越浪量、堤身设计进行了介绍，并结合模型试验结果对设计计算结果进行了对比分析，表明采用允许部分越浪的堤防设计可降低堤顶高度，节约工程投资。     

异形地下连续墙成槽垂直度控制措施

某泵站及调蓄池主体结构的深基坑围护结构和地下结构外墙采用了地下连续墙,即二墙合一的地下结构体系。地下墙壁厚0.8m,横墙埋深45.3m、翼墙埋深35.5m,属超深地下墙。该地下墙成槽施工区域土体原采用850m m三轴水泥搅拌桩加固土体,其水泥掺量分别为:标高-22.50m以下20%,标高-22     

天津滨海新区淤泥土质基坑支护与开挖方法

工程概况 天津新港7号路门区工程位于跃进路与海防路间的新港7号路正中,由南北两侧塔楼及102.0 m跨度钢结构桁架共同组成,深基坑位于北侧塔楼部位.北侧塔楼基底南北向长为27.3 m,东西向宽为19.0 m.塔楼基础采用锤击预应力混凝土管桩,地下部分为箱涵(包括6孔管涵及两个连体的箱形基础),管涵底标高为-6.3 m,现场自然地坪标高为-1.0 m,基坑开挖深度为5.4 m.     

防波堤挡浪墙波浪力的研究进展

结合相关文献资料,介绍了波浪在挡浪墙前的破碎形态,探讨了防波堤挡浪墙所受到的波浪力,并分析了挡浪墙结构设计对波浪力产生的影响,为类似问题的研究提供了依据。     

某住宅楼地下室裂缝分析及加固

一、工程简介 笔者参与施工的某临江住宅楼由主楼（七层框架,基础为冲孔灌注桩）及附属地下室（二层框架,坐落于钢筋混凝土挡墙上,北侧为钢筋混凝土挡墙,南侧与主楼分别在标高0.00及标高-3.30处悬挑相连）组成。其位置关系详见图一。E轴挡墙前墙趾处于标高-13.70,F轴挡墙前墙趾处于标高-6.50。     

高层错层结构设计与措施

南京尧化门G37地块地上各单体建筑中有2栋高层错层结构:1#办公楼结构屋顶标高114 m,底部8层错层,2#公寓楼结构屋顶标高85 m,底部10层错层,均超过错层的框架-抗震墙结构在7度区的高度限值80 m,文章讨论了错层结构相应的加强措施,提出了抗震性能目标,有效地减少错层对结构抗震造成的不利影响。     

有粘结预应力混凝土框架梁施工的质量控制

武汉琴台大剧院工程,建筑面积为65650m2,其结构型式为钢筋混凝土框架-剪力墙结构,地下4层,地上6层。在两侧舞台17.40m、26m标高层、后舞台-0.60m、20.40m标高层设有18条26m跨预应力大梁(采取两端张拉技术),观众席二、三层楼座设置了18条悬臂预应力大梁(采用后端张拉),其中预应力钢绞线采用国家标准预应力钢绞线1×7标准型-15.20-1860-Ⅱ-GB/T5224-1995;锚具采用OVM锚具;固定端采用挤压锚具。设计张拉控制应力σcon=0.70fptk=1302N/mm2。预应力筋套管采用外径Ф67×2焊接薄壁钢管,套管接头处用内径Ф69×2(L=80mm)钢管。混凝土强度等级为…     

天津南港防潮堤工程设计

本文介绍了天津南港工业区东边界防潮海堤的主要工程设计内容,提出允许部分越浪的设计思路,对海堤堤身结构布置、堤顶高程确定、堤顶和堤坡护面设计及堤基处理等设计问题进行了详细论述与探讨,结论可供类似工程借鉴。     

浅析高速公路工程招投标中的最低评标价法

结合目前高速公路施工项目招投标活动的实际情况,阐述了最低评标价法的概念,归纳了其优点及存在问题,对完善最低评标价法提出几点策略,以期促进招标投标市场更加规范有序。     

Place-Making in Megaprojects in Melbourne

This article analyses state-led place-making practices in Melbourne. The two levels of government that influence planning in Melbourne make much of the city as ‘culturally vibrant’ and ‘creative’, and have incorporated creative city-inspired place-making principles into many layers of the planning system. An examination of the development of two mixed-use megaprojects in central Melbourne reveals however that ideals of culturally engaging public places, and indeed of creative landscapes for middle-class consumption, wither in the face of more basic imperatives for economic development. In these case studies the ‘creative city’, no matter how the idea is interpreted, has little traction either as a set of inclusive place-making principles or as a gentrification strategy. The article concludes that the creative city-inspired place-making objectives in the planning system at both state and local levels are ambiguous in their overall intents and completely unsupported by statutory controls. Such place-making objectives as are realised are the compromised results of the interplay of uncoordinated decisions, delivered at the pleasure of the developer.     

Pathogens in septage in Vietnam

Septage is widely acknowledged as a major source of infectious pathogens while disposal of septage, and the operation and maintenance of septic tanks, is not regulated in many developing countries. Twenty untreated septage and septage sludge samples were taken from Can Tho City, Vietnam to examine their pathogen content, and indicator micro-organisms. Escherichia coli and Enterococcus spp. were detected in all samples, regardless of sludge storage time. Phages were detected in 80% of samples. Salmonella spp. were detected in 70% of the untreated septage and 60% of septage sludge samples. Concentrations of phages and bacteria tested in septage sludge after many years of tank storage were much higher than the expected levels. Helminth ova were present in 95% of untreated septage samples with an average of 450 ova l^− 1, and were detected in all septage sludge samples with an average of 16,000 ova l^− 1. Twelve varieties of helminth ova were identified. More helminth ova varieties in higher concentrations were found in septage than those reported from stool samples. The varieties' frequency ranged from 10% to 50% and Ascaris lumbricoides predominated. Results show that pathogens and indicator micro-organisms, especially helminth ova, accumulate in sludge. Thus helminth ova should be considered when septage sludge is treated and used for agriculture. Proper health protection measures must be applied for people handling septage.     

在市场中实践在实践中学习在学习中进步--工程公司市场化进程的回顾与展望

近两年来，工程公司在提高市场竞争意识、推动市场化进程中做了大量工作，其中坚持走出去的方针是我们自我加压、推行加快市场化步伐的一个重要战略步骤。     

新时期广东城市化的新特点

新时期广东城市化出现以下特点:知识源导向、城市由单体向群体化发展、产业集群推动、政府主导自上而下的集约化发展、城镇化向城市化转变、由重“数量”发展向重“质量”发展的转变。     

新形势下高校强化基建财务管理的探讨

在市场条件下高校基建财务人员在加强日常财务管理的同时,必须树立起高度的工作责任心,抓好事前监督、事中监督、事后监督三个环节,全面理解、贯彻执行《高等学校财务制度》,管好用好各项基本建设资金,提高基建财务管理水平,更好地完成高校各项基建任务,以有限的投资,最快的建设速度,获得最大的投资效益。     

2005年北京办公物业市场七大趋势

趋势一:CBD区域写字楼集中放量从各区域规划方案上看,CBD区域多数项目在03～04年处于项目的报批手续及拆阶段,预计2005年正式推向市场,因此2005年CBD区域将成为北京市场供应集中的域,区域即将供应的项目有北京财富中心(二期)、金地国际花园、万达广场、SOHO尚都、万通中心、世纪财富中心、怡禾国际中心、光华国际等。除去未知项目,2005CBD写字楼办公面积的供应量为60万平方米左右。中关村区域经过一段时间的集中供后开始逐步放缓,2005年供应的体量相对较大的项目有中关村金融中心、新中关。金街区域可能开盘的项目只有2个:英蓝国际中…     

浅谈我国工程项目建设成本控制存在的问题

结合目前我国施工企业工程项目成本管理现状,对工程项目成本管理过程中存在的问题进行了较详细的分析,并提出了一些解决问题的办法,以做好项目成本控制工作,进而增强企业经济实力。     

Variation in property taxation in Tulsa

Conclusions It may be reasonably concluded from this study that the range of variation in these ratios of assessed to actual value are of a reasonable size for the great majority of cases. The frequency distribution of these sample ratios was not normal, however, as was assumed a process of this type would produce. On the other hand, the failure of the regression analysis to identify any significant variables which would explain these variations would tend to re-enforce the assumption that the fluctuations were indeed of a random nature.To sum it up in one paragraph, aside from a few extreme cases, the assessing process appears to give estimates which are more consistent than would be expected under the assumption that any errors would be of a random nature, but the regression analysis was unable to isolate any particular socioeconomic characteristics which would explain the variation which was present.Financial support for this research project was furnished by the University of Tulsa.