Jinan Municipal Engineering Design and Research Institute

Jinan, China

Jinan Municipal Engineering Design and Research Institute

Jinan, China

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Huang W.,Huazhong University of Science and Technology | Zheng M.-W.,Jinan Municipal Engineering Design and Research Institute | Xu F.,Wuhan Institute of Technology | Zhou J.-J.,WISDRI Engineering and Research Incorporation Ltd
Dongbei Daxue Xuebao/Journal of Northeastern University | Year: 2015

As an inseparable component, the decorative cable of ornamental suspension bridge does not carry loads with the main structure. The main cable and hanger rods should have certain internal force that matches with the main bridge so as to keep their line-shapes. An approach was proposed for such bridge to calculate the blanking length and tensile force of the cable and rods. Firstly, a model for the main cable was built with hanger rods simplified as vertical constraints. Secondly, the tensile force of main cable in each section and the constraining force of rods were calculated. Finally, the blanking length of each member can be obtained. With a project in Xinjiang, a partial FE(finite element) model of main cable is established by the MIDAS/Civil to calculate the theoretical tensile forces and blanking lengths of the cable and rods, and check its dynamic characteristics. The as-built bridge meets all requirements. ©, 2015, Northeastern University. All right reserved.


Liu C.,Shanxi University | Yang Y.,Shanxi University | Wan N.,Jinan Municipal Engineering Design and Research Institute
Water Quality Research Journal of Canada | Year: 2014

Adsorption of phosphate onto construction solid waste (CSW) was investigated in a batch system. CSW as an inescapable by-product of the construction and demolition process, was used as a composite adsorbent for the removal of phosphate in this study. The adsorption kinetics was investigated under various parameters such as contact time, pH, CSW dosage, initial phosphate concentration and particle size. Greater percentage of phosphate was removed with decrease in the initial concentration and increase in the amount of CSW used. Adsorption of phosphate was pH dependent, and maximum phosphate immobilisation capacity was obtained in alkaline condition. Lagergren first-order, second-order, intra-particle diffusion and external diffusion model were used to test the experimental data. Kinetic analysis showed that the adsorption was best fitted with the pseudo-second-order kinetic model. Adsorption mechanism studies revealed that both external mass transfer and intra-particle diffusion had rate limiting effects on the removal process. These results demonstrated that the CSW could be used as a low-cost adsorbent media for phosphate removal, and the data were relevant for optimal design of wastewater treatment plants. © IWA Publishing 2014.


Liu Y.,University of Jinan | Liu J.-Y.,University of Jinan | Wang H.-P.,Jinan Municipal Engineering Design and Research Institute
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2010

From the theory of cooperative deformation of diagonal bracing systems, according to the minimum potential result, a new method of ″removing first and supporting then″ in every sub region and sections is introduced, and the calculation method of the length of sub region is derived. Finally, the feasibility and rationality of the proposed method is proved by the practical engineering. Henceforth, the conclusions can provide references of design and construction for the similar projects.


Wang H.-P.,Jinan Municipal Engineering Design and Research Institute | Liu Y.,University of Jinan | Liu T.,Ocean University of China
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2010

Cut-and-cover excavation is used properly in the design of subway station, which can display some advantages. The open-cut method is of fast construction and guaranteed construction quality, and the subsurface excavation has little influence on the ground traffic and underground pipeline and has low cost when constructed in deep rock region. The characteristics of subway station design excavated by cut-and-cover excavation combined method in rock region is studied based on the design of subway station in Qingdao. Asymmetric steel-pipe pile + bolt, shotcrete and anchoring supporting system are introduced in the open surface excavated foundation pit, considering the protection requirement of surrounding environment. Wholly grouted mortar anchor bars and hollow grouting anchor bars are used respectively in the subsurface excavated region under the conditions of surrounding rock. The supporting system can meet the requirements of project design conformed by simulation, which can give some advices to similar projects in rock region.


Zheng X.-L.,Ocean University of China | Liang C.,Qingdao Urban Planning and Design Research Institute | Zhang J.-J.,Ocean University of China | Yue F.,Jinan Municipal Engineering Design and Research Institute | Liu J.-H.,Qingdao Urban Planning and Design Research Institute
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | Year: 2012

A new computational formula was deduced and created to calculate oil content in water-bearing medium through introducing oil dying loss ratio. The results show that this improved formula can measure dry medium solid mass and oil content in petroleum-contaminated water-bearing medium accurately. The value of oil drying loss ratio varies depending on types of oil and water-bearing media. The oil drying loss ratio in coarse sand contaminated by diesel oil is 0.66. The relative error of the new method is about 0.4%, which is far below the relative error of existing methods. Moreover, the measurement accuracy of the new method is not influenced by oil volatility and oil content.


Liu C.,Xi'an University of Architecture and Technology | Yang Y.,Xi'an University of Architecture and Technology | Wan N.,Jinan Municipal Engineering Design and Research Institute
Chinese Journal of Environmental Engineering | Year: 2013

Aluminum sludge was an inevitable by-product from the processing of drinking water in water treatment works. Batch studies were performed to investigate the influences of experimental parameters such as pH of solution, contact time, and Cr (VI) concentration. The results showed that: (1) the main functional groups of the surface of aluminum sludge were-OH, SO42-, Cl-; (2) in the adsorption process, as the concentration of Cr varied from 20 mg/L to 15.42 mg/L, pH increased from 6.01 to 7.06, both of SO42- and Cl- concentration increased (from 8.79 mg/L to 11.40 mg/L for SO42-and from 10.54 mg/L to 11.88 mg/L for Cl-), which demonstrated that HCrO4- exchanged with the functional groups of aluminum sludge such as-OH, SO42-, Cl- and the adsorption mechanism was ligand exchange; (3) pH played a major role in the adsorption capacity. The adsorption capacity decreased from 7.63 mg/g to 0.70 mg/g with an increas of pH from 4.0 to 10.0. It indicated that alum sludge was a promising material for the removal of phosphate from wastewater, and also could be helpful to optimize the absorption process.


Liu C.,Xi'an University of Architecture and Technology | Yang Y.,Xi'an University of Architecture and Technology | Wan N.,Jinan Municipal Engineering Design and Research Institute
Chinese Journal of Environmental Engineering | Year: 2014

The adsorption characteristics of fly ash blocks powder to phosphate were evaluated. Batch adsorption were conducted to study the effects of various parameters such as initial concentration, adsorbent dosage and solution pH on phosphate adsorption. Langmuir, Freundlich and Temkin isotherms were used to analyze the equilibrium data, and the Langmuir isotherm fitted the experimental data significantly better. The phosphorous theoretical saturated adsorption capacity was 44.62 mg/g. Adsorption kinetics data were also tested using pseudo-first-order, pseudo-second-order and intraparticle diffusion models. It showed that the adsorption process followed a pseudo-second-order reaction. The mechanism of the adsorption process was determined from the intraparticle diffusion model, external diffusion model, Bangham's equation and Boyd model. The mechanism studies revealed that the process was complex and followed both surface adsorption and particle diffusion. It was found to be controlled by the film diffusion at lower concentrations, and at higher concentration, the particle diffusion becomes the rate-determining step. The outcome indicated that fly ash blocks powder was a promising material for the removal of phosphate in constructed wetlands, which provided a win-win approach for both the construction solid waste disposal and wastewater control.


Zhang Y.,Ocean University of China | Zhang Y.,Qingdao Technological University | Zheng X.,Ocean University of China | Liang C.,Ocean University of China | And 2 more authors.
Energy Procedia | Year: 2011

As an important central city of Shandong Peninsula, Qingdao is faced with new challenges once more, with the development of economic globalization and regional integration. In this paper, the industries competitive in Qingdao were analyzed and discussed by area commercial law. The strategies and suggestions were proposed to promote the development of important industries, from aspects of government coordination, industry structure, enterprise core competitiveness, brand economic, etc. These strategies for industrial clusters will provide important references for economy development of Qingdao and Shandong Peninsula. © 2011 Published by Elsevier Ltd.


Liang C.,Qingdao Urban Planning and Design Research Institute | Song J.,Ocean University of China | Yue F.,Jinan Municipal Engineering Design and Research Institute | Zhang J.,Ocean University of China
WIT Transactions on Engineering Sciences | Year: 2014

Environmental protection is the premise and foundation of urban sustainable development. Considering water environment problems of Dagu River Basin of Qingdao, environmental protection strategies were raised to harmonize its urban development. Through river ecological management and pollution control measures of industry, agriculture, livestock and poultry breeding, and the rural living, water environmental protection and sustainable development of Dagu River Basin will be achieved, which have important strategic significance for the urban sustainable development. © 2014 WIT Press.


Liu J.-Y.,University of Jinan | Liu Y.,University of Jinan | Wang H.-P.,Jinan Municipal Engineering Design and Research Institute
Yantu Lixue/Rock and Soil Mechanics | Year: 2010

Comparing with horizontal support, the bracing systems of pile and oblique bracing have obvious advantages in big and deep foundation pit. Because the study about the removal of diagonal bracing is rare, the use of this system is limited. The accustomed removal method of the internal supporting is supporting followed removing. Based on the coordinating role of space support systems, according to the minimum potential result, the removing design thinking of supporting followed removing in several sub region and sections is proposed; and the calculation method of the length of sub region is derived. Finally, the feasibility and rationality of the proposed method are verified by the practical engineering. According to the research, the top beam moment and the moment and displacement of the pile are the key factors which decide the length of the sub sections. The concept of the overall process design is came up. All of these can provide reference for this design and construction.

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