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Construction industry is highly risk prone, with complex and dynamic project environments creating an atmosphere of high uncertainty and risk. The industry is vulnerable to various technical, sociopolitical and business risks. The track record to cope with these risks has not been very good in construction industry. As a result, the people working in the industry bear various failures, such as, failure...
This paper proposes a simple design equation for A-sandwich radome design. Operating frequency and transmittance are input parameters for the design equation. For a given design specifications to achieve appropriate performance with A-sandwich radome, tedious calculations must be carried out to extract key material and structural parameters. This letter shows that when material constant and thickness...
The purpose of this study was to develop and test a work safety for construction company. Using the theory and method of unascertained measure, an unascertained measure model and the related confidence rule ale established to assess the safety state of ship. The appraisal index system is setup and the unascertained measure model is given. At last, an example is given to verify the theory model.
There were many phases, hiberarchies, activities and partners in the schedule of construction engineering projects, especially the large-scale construction engineering projects, and the activities were complicated, the processes were very difficult, which has high impact on information communication between each partners, accordingly, the schedule would be out of controlling, the cost would be increased,...
Construction projects are initiated in complex and dynamic environments resulting in circumstances of high uncertainty and risk, which are compounded by demanding time constraints. This paper describes an application of Monte Carlo simulation method to consider and quantify uncertainty in construction scheduling. This paper points out the importance of the construction project scheduling risk analysis...
Database technology is the significant part of computer science and technology, as the core technology of information management, database technology is widely used in the field of information technology. is the core compulsory of the major of computer and it plays a pivotal role in the curriculum system. On the other hand, as the experimental materials and experimental means are restricted, teaching...
Nowadays, many researches have been carried out to simulate people's movement behaviors under emergencies. This paper proposes a feasible way for pedestrian evacuation guidance service and developed an evacuation simulation and guidance system. The system takes a real building as its base-map; CA model is used to simulate the pedestrians' movements; different fire models are developed in consider...
After the concept of virtual geographical environment (VGE) has been initiated, related issues to it are becoming research hotspots in geographic information science. It shows its comprehensive application prospects in different fields to human; even in geography some celebrated scholars think that VGE is becoming new generation language after verbal language, maps, GIS. The concept initiation of...
The modification of sodium trititanate whisker surface was performed by means of impregnation procedure to fabricate the modified sodium trititanate whisker, which was characterized by scanning electron microscopy(SEM) and infrared spectroscopy(IR). Its adsorptive performance for Co(II), Pb(II) in a static system was investigated by inductively coupled plasma atomic emission spectrometry(ICP-AES)...
Permafrost area in china is about 2.15×106km2, and mainly distributed in Tibetan Plateau, Northeast china and Midwest mountains. Although engineering construction increased gradually in permafrost regions with the development of society and science technology, there was no precedent for the airport construction in permafrost regions two years ago. Mo-he airport, the first airport in permafrost region...
The traditional dwellings with comfortable courtyards provide perfect environment for people in Meizhou because of the design of dwellings' courtyard possessed idea of the original ecology, which suits for the subtropical architectural climate. We can draw lessons from the traditional idea such as the usage of the original ecological material and effective low ecological technology for the construction...
Due to wildly application in civil engineering and industry building, the safety requirement of outer wall external thermal insulating system is obliged. Based on the present standard of tapestry brick of construction engineering in China, the adhesive strength tests for the outer wall have been carried out. Due to the tests of one EPS external thermal insulating system, we introduce a new elastic...
According to the structure and operating principle of continuous mixer, the mixing evenness and the structure and application parameter were set up by using kinematics analysis and theory derivation. The mathematics model shows the relations between parameters are verified by full size experiment. Theory derivation established mathematics model describing the parameter relations between mixing evenness,...
Wind is strong at the site of Jing River Bridge, the effect of wind load and other possible loadings on the stability of the structure is considered. Based on the actual construction stage, this paper mainly analyzed the nonlinear stability of No.6 and No.7 piers of the Jing River Bridge. Material nonlinearity and geometric nonlinearity are both included in the numerical investigation. The results...
The pipe manipulator is a way to solve the safety, quality and efficiency problem in the pipe laying construction site, and enhances the technology of pipelaying. The mechanical principle, the photoelectric locating system and the automatic control system of manipulator were studied, and the experimental sample was made, and the experiment was done. According to the test result, the pipelaying manipulator...
Culture force is one of three-main important environment force for construction enterprises'value innovation. Based on literature review among the culture, culture force and enterprise culture force, the paper argues that culture governance is the highest state for construction enterprises to improve construction enterprises value innovation ability. Then, culture force system is divided into four...
The paper deals with the mechanical behaviour of ancient masonry constructions subjected to static vertical loads. The cases considered concern structures designed to cover a given span. Masonry is modelled as a no-tension orthotropic. Three cases are analysed. The purpose of the study is to recognise for each case the bearing structure. As a consequence of the modelling the masonry is divided into...
Using material with unique ways may tremendously improve the behaviors of a building. Aiming at the weakness of the existent residential building systems with steel structure, such as weaker structural stiffness, obstructing the indoor space being used, affecting the appearance of interior facade, a new conception of a congregated residential building system with special-shape section steel structural...
Heilongjiang province has the largest area for agriculture in China and its agriculture is a big non-point source for water pollution. The policy reasons of this problem were investigated extensively and recommendations were put forward in this paper. Policy reasons that lead to agriculture as a non-point source of pollution in Heilongjiang province included: unbalance of economy growth and environmental...
Borehole tamping rammed pile is usually adopted to treat with thick significant collapsible loess subsoil in LanZhou area. The characteristics, similar static test curves and same failure mode which damage gradually, are indicated by static test results conducted on individual pile rammed with different tamping (plain soil and 2:8 lime soil), soil between piles and composite foundation. The bearing...
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