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Bu Y.-H.,Changan University | Wang Y.-H.,Changan University | Han G.,China United Northwest Institute for Engineering Design and Research | Li L.,Ningxia Construction Vocational and Technical College
Xi'an Jianzhu Keji Daxue Xuebao/Journal of Xi'an University of Architecture and Technology | Year: 2013

A new design of rammed earth walls with built-in rope nets with its construction technology was proposed. Two specimens were built by way of the new construction technology and traditional construction technology, with the mechanical behavior and seismic behavior studied. Vertical loading and low cycle reversed horizontal loading were carried out on specimens aimed to study the failure process, failure mode, hysteretic curve and skeleton curve feature. The horizontal bearing capacity and deformation capacity of the walls also were studied, with the influence of the built-in rope nets analyzed. Test results indicated that compared with the traditional construction method, the horizontal bearing capacity and deformation capacity of the new design wall was improved by built-in rope nets construction method. Thus, with the built-in rope nets rammed earth walls, the integrity of the raw-soil structure houses is strengthened, and the seismic behavior improved. Source


Zhao J.,Changan University | Zhang X.,Ningxia Construction Vocational and Technical College | Chen Y.,Changan University
Applied Acoustics | Year: 2012

In view of the well-recognized need for the availability of simple traffic noise-prediction methods for non-straight roads, such as interchanges and flyovers, an approximate traffic noise-prediction model, suitable for non-straight roads, was developed following the modeling process of the Federal Highway Administration's (FHWA) traffic-noise model. The approximate model is simpler than the FHWA model when the non-straight road is divided into several road sections, their traffic-noise levels calculated individually, and all the sound levels superimposed to obtain the total traffic-noise level of the entire non-straight road. The rational length of the small road section was investigated. The traffic-noise levels predicted using the approximate and the FHWA models were compared through an example and were shown to differ only very marginally. The approximate model is thus suitable for traffic-noise prediction for non-straight roads. © 2011 Elsevier Ltd. All rights reserved. Source


Bo W.,Ningxia Construction Vocational and Technical College
Proceedings - 2015 7th International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2015 | Year: 2015

Construction of urban metro will be the development tendency of underground project in the future. The key to determining the quality of metro construction is construction of shallow tunneling and subsurface excavation in the stratum filled with established buildings. It is of great academic application value to study the quality control and deformation rule of the metro construction under the established buildings. This paper takes the underpass foot bridge project of metro tunnel as the background, through effective control measures of construction quality control, it guarantees the construction and operation safety of established buildings in the construction process of metro tunnels. Meanwhile, research on the subsidence laws of related stratum also provides reference evidence for the design and construction of urban metro. © 2015 IEEE. Source


Bu Y.-H.,Changan University | Wang Y.-H.,Changan University | Li L.,Ningxia Construction Vocational and Technical College | Liu T.,China United Northwest Institute of Engineering Design and Research
Chang'an Daxue Xuebao (Ziran Kexue Ban)/Journal of Chang'an University (Natural Science Edition) | Year: 2011

New construction methods were put forward to apply to rammed earth walls of raw-soil structure. Three specimens were built by the way of traditional horizontal layer, alternate layer and add-pin-key construction methods, the mechanical behavior and seismic behavior of which were studied. Vertical loading and low cycle reversed horizontal loading were carried out on specimens to study the failure process, failure mode, hysteretic curve and skeleton curve feature. The horizontal bearing capacity and deformation capacity of the walls also were studied, the influence of different construction methods on which was analyzed. Test results indicate that, compared with the traditional construction method, the horizontal bearing capacity and deformation capacity of the wall can be improved by alternate layer construction method, and the deformation capacity of the wall can be improved by add-pin-key construction method. Source


Ma Y.,Ningxia University | Ma Y.,Ningxia Construction Vocational and Technical College | Zhang W.,Ningxia University
Applied Mechanics and Materials | Year: 2012

On account of increasing contradiction between water for life, environment, agriculture and water supply in Haoshuichuan watershed, it constructs new projects for water diversion, pumping, transpiration and distribution on the base of current project layout. A unified deployment of water supply source is formed through 1 reservoir, 11 key dams and 15 medium-sized check dams which have been built in river basins. It establishes watershed water resources joint scheduling mode through application of optimization theory, and adopts MATLAB optimization toolbox for the solution of the model. The research result may provide decision-making basis for river basin agricultural layout, ecological restoration and sustainable economic development, also provide reference for joint scheduling of water sources in similar regions. © (2012) Trans Tech Publications, Switzerland. Source

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