提高管道安装速度的工程实践及认识

应用科学有效的管理办法充分做好施工准备、严格控制进场材料质量和施工质量,尽可能的减少停工、窝工、误工、返工用时,提高施工效率,保证完成施工任务;同时结合现场具体情况采用最佳的施工办法和合理的施工部署,从本质上提高施工速度,按期完成施工任务。     

3 200 m3高炉工程施工组织设计的编制与实施

论述了大型综合项目施工组织设计编制要点.着重介绍了编制内容、施工部署、主要施工方法、施工组织设计的实施.     

某办公楼工程预应力高强混凝土管桩施工实例

介绍预应力高强混凝土管桩的优缺点、主要施工方法以及工程实例中施工方法的确定、施工程序与施工技术管理。     

3 200 m3高炉工程施工管理

论述了3 200 m3高炉工程的施工原则、施工管理、施工机械管理的具体内容.通过严格的管理,保证施工进度、工程质量和安全文明施工.     

煤矿井下如何构筑单扇风门

根据以往风门施工实践中遇到的问题,在规范风门施工的基础上,提出施工风门的技术要求、质量标准、施工方法和注意事项.     

桥式起重机易位工程施工方案的选择

介绍了利用现有的起重设备、施工技术力量、施工场地环境、空间位置对4台冶金专用桥式起重机易位施工方案的选择和施工方案中选择重点和难点。     

沉井施工方案简析

介绍了某熔铸车间设备基础铸造机沉井的施工方案。依据施工顺序,对沉井验算、沉井制作、沉井下沉处理施工的过程进行了详细分析。沉井施工工序较多,作业面狭小,下沉控制难度大,因此在施工时应特别注意工序之间的组织配合,以确保沉井施工质量。     

汽轮机基础施工方案浅谈

本文就汽轮机基础施工的施工准备、主要施工工序进行了阐述。对汽轮机基础底板、汽轮机上部梁板结构的施工方案进行了简单介绍。     

绿色施工技术措施

根据2007年,建设部发布的<绿色施工导则>中提出的绿色施工框架,从施工管理、环境保护、节材与材料资源利用、节水与水资源利用、节能与能源利用、节地与施工用地保护等方面,详细地描述了绿色施工的技术措施.     

谈清水混凝土施工技术

本文从模板施工、混凝土浇筑、加强现场管理等方面详细阐述了工业厂房工程中清水混凝土施工技术及施工质量控制要点,保证混凝土施工建筑,表面平整、色泽一致.     

Measuring Quality of Writing of Construction Specifications

The quality of writing of construction specifications is one of the greatest challenges facing construction contractors or their representatives in today’s business environment. Writers of construction specifications have been criticized for their contribution toward construction disputes. Although the construction business environment has moved toward modernization of some of its business processes, claims arising from construction specifications continue to rise. Equally, a written exposition of a quantitative instrument that measures the quality of writing of construction specifications is not available in the literature. Thus the construction industry needs to develop methodologies for measuring the quality of writing of construction specifications that should overcome their current underperformance in this area. This paper presents the procedures that underlie the quality of writing of construction specifications, gives a management tool for facilitating its measurement, and also presents the results of construction contractors’ practices regarding the quality of said writing. The results show that the surveyed Malawian construction contractors were in the process of putting in place principles to govern the quality of writing of construction specifications.     

复杂地形条件下隧道施工地表建（构）筑物监测

为确切反映地表建筑物、构筑物在隧道施工期间的移动与变形的程度及趋势,实现信息化施工,需对隧道施工地表及建（构）筑物进行监测。分析施工隧道地表复杂地形条件及建（构）筑物密集的特点,确定地表建（构）筑物监测的布网原则、监测内容、监测范围与监测方法,以及测点埋设、监测频率、监测数据处理和报警方案,并成功应用于某隧道施工地表及建（构）筑物监测。     

浅谈工程项目建设质量控制应把握的重点

"百年大计,质量第一"的方针,对保障我国工程项目建设的施工质量,促进建筑行业的健康、稳定发展起了重要作用。工程项目建设质量的优劣,不但关系到工程项目建设建筑产品的适用性,而且还关系到人民生命财产的安全和社会安定,直接影响国家经济建设的速度,质量低劣带来的直接和间接经济损失大的无法估量。所以,在工程项目建设中,想要取得良好的建筑施工质量,应严格执行项目质量控制的原则,加强建筑施工质量控制和管理,把控建筑施工各个阶段的质量,实现建筑工程项目的有序开展和优质完成。尤其施工阶段的质量控制是工程项目建设质量控制的重点。     

真空吸水工艺在冶金铁路整体道床施工中的应用

介绍了真空吸水法在冶金铁路整体道床施工中应用的原理、施工所用主要设备、施工工艺流程等,并对这一新工艺与传统施工工艺相比的优越性作了阐述。     

建筑垃圾资源化全产业链云信息平台构建研究

分析建筑垃圾处理产业链各参与方需求,利用信息化技术构建建筑垃圾资源化利用云平台,开发建筑垃圾源头信息管理系统、建筑垃圾运输信息管理系统、建筑垃圾处置场所管理系统、建筑垃圾处置信息管理系统、再生产品信息管理系统、建筑垃圾资源化利用展示系统六大平台,实现建筑垃圾信息的在线实时管控。     

Estimating Future Highway Construction Costs

The objective of this research was to develop a model that estimates future highway construction costs in Louisiana. The model describes overall highway construction cost in terms of a highway construction cost index. The index is a composite measure of the cost of construction labor, materials, and equipment; the characteristics of contracts; and the environment in which contracts are let. Future construction costs are described in terms of predicted index values based on forecasts of the price of construction labor, materials, and equipment and the expected contract characteristics and contract environments. The contract characteristics and contract environments that are under the control of highway agency officials, can be manipulated to reflect future cost-cutting policies. Application of the model in forecasting to highway construction costs in Louisiana shows that the model closely replicates past construction costs for the period 1984–1997. When applied to forecasting future highway construction costs, the model predicts that highway construction costs in Louisiana will double between 1998 and 2015. Applying cost-cutting policies and assuming input costs are 20% less than anticipated, the model estimates highway construction costs will increase by 75% between 1998 and 2015.     

Illustrative Benchmarking Rework and Rework Costs in Swedish Construction Industry

Following several studies investigating the causes of construction rework among some projects in the Swedish construction industry, we conducted this study in cooperation with R&D West, a group of construction companies in Sweden, to measure the costs of rework in construction projects. Rework has become an endemic feature of the procurement process in construction that invariably leads to time and cost overruns in projects. Thus, in order to improve the performance of projects, it is necessary to identify the causes and costs of construction rework. The research presented in this paper identifies, analyzes, and discusses the causes, magnitudes, and costs of rework experienced in seven Swedish construction projects. The findings revealed that the costs of rework for the case study projects were 4.4% of the construction values of the observation period, and the time needed to correct them was 7.1% of the total work time. The construction errors that generated rework were further analyzed according to their origins, types, and positions, causes of construction rework were identified and discussed, and preventive actions were suggested.     

浅谈工程监理在控制工程造价过程中的作用

叙述了工程监理在投资决策、设计、招标、施工和竣工等阶段，从组织、技术、经济、合同等多方面所采取的质量、工期费用等一系列专业化服务工作。简述了工程监理在控制工程造价过程中的作用，对保证投资管理目标的实现提交工程建设投资效益起到了积极的作用。     

Scheduling∕Cost Optimization and Neural Dynamics Model for Construction

A general mathematical formulation is presented for the scheduling of construction projects and is applied to the problem of highway construction scheduling. Repetitive and nonrepetitive tasks, work continuity constraints, multiple-crew strategies, and the effects of varying job conditions on the performance of a crew can be modeled. An optimization formulation is presented for the construction project scheduling problem, with the goal of minimizing the direct construction cost. The nonlinear optimization is then solved by the neural dynamics model developed recently by Adeli and Park. For any given construction duration, the model yields the optimum construction schedule for minimum construction cost automatically. By varying the construction duration, one can solve the cost-duration trade-off problem and obtain the global optimum schedule and the corresponding minimum construction cost. The new construction scheduling model provides the capabilities of both the critical path method (CPM) and linear scheduling method (LSM) approaches. In addition, it provides features desirable for repetitive projects, such as highway construction, and allows schedulers greater flexibility. It is particularly suitable for studying the effects of change order on the construction cost. This research provides the mathematical foundation for development of a new generation of more general, flexible, and accurate construction scheduling systems.