Advanced Materials Research Vols. 690-693

Abstract: The research uses Mortar bar rapid method. The experiment of single-doped mineral admixture such as fly, slag and silica fume has been done on the base of the theory of mineral admixture suppressing concrete alkali silica reaction (ASR).The effect of each mineral admixture on suppressing concrete ASR has been analysis ed. It shows that the inhibition for suppressing concrete ASR was the most beneficial when the addition of fly is 50% and the more the dosage is, the better the inhibition is. The silica fume is more beneficial for suppressing concrete ASR relatively and it also needs less addition. The effect of slag is the poorest and it also needs more addition.

Abstract: The Inhabited Bridge combines bridge and building, integrating with abundant functions, attracting people to linger on it. It shows a striking contrast to modern bridges which mainly serve fast traffic. Through historical retrospect and analysis of characteristics different from modern bridges, this article points out that the present bridge construction should make progress on four aspects: satisfying slow-traffic people, compounding various lingering functions, creating water-seeing open spaces, and harmonizing with environments.

Abstract: The bolt’s load transfer differential equation has established according the stress equilibrium in a small section of a bolt and load transfer mechanics. And according the rock mass deformation before and after bolt assembling, the rock bolt’s load transfer equation has gained. In this paper, from later researching achievement, the radial displacement function of brittle wall rock for tunnel is gotten. And combining the radial deformation of tunnel wall rock mass, the axial force and friction resistance of rock bolt have gotten in brittle wall rock mass. Through analyzing the stress distribution feature and stress distribution tendency and affection factors, the affection factors to anchoring results is the dilatancy angle. And through the studying, it is show that the axial force and shear stress of rock bolt are bigger with the dilatancy angle increase

Abstract: This paper investigates Shanghais urban development since 1988 contextualized the series of institutional changes. It examines the rapid urban expansion, and elucidates the large scale and comprehensive re-development within the inner city. The research identifies the transition from government-backed development to property-led development.

Abstract: Directed against the stiffened and thin-walled square concrete-filled steel tubular (CFST) short columns, the paper simplifies the square CFST columns into the circle ones by introducing the strength reduction coefficient of concrete and the equivalent constraint reduction coefficient. On the basis of the unified strength theory, the united solution of the ultimate bearing capacity for square CFST columns is deduced after considering the influence of strength-differential in tension and compression and intermediate principal stress. Some influencing factors are also analyzed in the paper. Through comparing the results of proposed formula with that of experiments of relevant literatures，the rationality of proposed formula is proved. The solution may provide theoretical references for the study of the ultimate bearing capacity for stiffened and thin-walled square CFST short columns.

Abstract: This paper provides a review of the progress in America, Europe, Japan and china withnumerous standardizations and investigations for the protection and repair of hydraulic concrete structures.These researches include detection technologies, evaluation methods, applications of newconcrete reinforcing and repair materials. This paper identifies the significant progress made by theInternational Commission on Large Dams(ICOLD).At the same time, some specific investigations are carried out on the ageing of hydraulic concrete structures in china. On this basis, the detection, assessment and remediation analysis of hydraulic concrete structures are summed up, and someadvice is put forward to the next stage of work.

Abstract: Due to the difficulty of expropriation, dump technology is experiencing the tendency of higher bench, heavier dumping intensity and larger dumping equipment. Therefore, accidents of dump bench instability or general shear failure on foundation soar rapidly. The capacity decreases because of reducing the heap height, and the high cost would be unacceptable if the soft layers of foundation were strengthened or cleared up. The practicality of passive control measures, such as rockfill dams and retaining walls locating at slope toe is analyzed; the validity of catch drains is evaluated, based on the interacting characteristics between the waste dump and the foundation. The design principles, permission of deformation and moderate failure, are submitted with considering consequence to surroundings. Active countermeasure mechanism is established according to spatial effect, reasonably using dumping-site space and adjusting time-space relation during dumping.

Abstract: By field research and literature organization for ancient kiln village in Mengjiajing, values and characteristics of the village were analyzed in this paper, which will help people further realize values and characteristics of the village and understand the historic information of protecting ancient kiln village in Mengjiajing.

Abstract: According to the legend，Lingshi county Wangyu village evolved continuously from Gu village, the station where Da yu once combated the flood. Even to this day, it also keeps the complete pattern and basic elements of Chinese ancient village. It has the high significance and value of the reasearch. Through the location characteristics and the historical background, discusses the main causes of the settlement landscape features, preliminary anlysis the structure layout, spatial organization and the morphological characteristics of the settlement landscape and residence, summarize the valued characteristic of the ancient village.

Abstract: In order to know more about the seismic behavior of structures supported by foundations with different locations, using the elastic and static elastic-plastic analysis method, the research is respectively from the aspects of the distribution characteristic of elastic inter-story displacement angle, the distribution law of story shear, and the distribution characteristic of elastic-plastic displacement angle and the sequence of plastic hinges. In the end, it is got that the characteristics of force and deformation of structures supported by foundations with different locations. It is found that the position of weak story would change along with the change of story stiffness. In order to guarantee the structures supported by foundations with different locations to have good seismic behavior, it needs to take the necessary internal force adjust measures and details of seismic design.