Changzhou City Planning and Design Institute

Changzhou, China

Changzhou City Planning and Design Institute

Changzhou, China
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Yang W.R.,Beijing Municipal Institute of City Planning and Design | Li F.,Chinese Research Academy of Environmental Sciences | Wang R.S.,Chinese Research Academy of Environmental Sciences | Xiong X.X.,Changzhou City Planning and Design Institute | Liu A.S.,Changzhou City Planning and Design Institute
Shengtai Xuebao/ Acta Ecologica Sinica | Year: 2013

The output of natural eco-service function is eco-service efficiency; it can be divided into positive and negative eco-services. Rapid urbanization occupies amounts of non-construction areas that are important for maintaining local favorable environment; this process affects the natural eco-service functions, and results in deterioration of city' s eco-environment, in other words, the negative eco-service efficiency increases. As a typical rapidly urbanization city at the eastern of China, Changzhou's urbanization occupied lots of lands for eco-services, it caused many environmental problems. Under the support of GIS and RS technology, this paper used methods of grid analysis and complex ecological assessment, and established the spatial indexes system for complex eco-services efficiency assessment from both positive and negative eco-services of the current land use. The results show that there is about 64. 5 percent land' s complex eco-service is positive, and 35. 5 percent land's complex eco-service is negative. According to the city's current land use planning trend, it would result in more lands changing from positive eco-services into negative efficiency. The results provide a scientific reference for decision-making of local land use planning and management for urban future development.


Zhu L.,Nanjing University of Technology | Kawasaki H.,Obermeyer Planen Beraten | Jiang X.,Changzhou City Planning and Design Institute
Proceedings of the Institution of Civil Engineers: Municipal Engineer | Year: 2015

Rapid urban development and increased car ownership and use in China bring many social and environmental problems. Many Chinese cities are promoting numerous large-scale transport infrastructures and development projects. How to shift the car-oriented development paradigm in the planning and construction of these projects is a challenge for planners and engineers. In the planning of the new town of Changzhou high-speed rail station, the car-free development concept was introduced to create a pedestrian-friendly urban space with easy transportation accessibility, safety and vitality. The planning team studied the car-free development concept and practices, and proposed an adaptive integrated solution for the HSR station project. It consists of four components: mixed-use development, maximum accessibility by public transportation, seamless transport transfer and continuous pedestrian network, which were integrated in the urban design by interfacing with land use, landscape and architecture. The result of the urban design is acknowledged and used as a guiding and control instrument by the city planning bureau for planning and management, serving as a basis for the regulatory planning and further spatial design. © 2015, Thomas Telford Services Ltd. All rights reserved.


Xia X.,Changzhou University | Wang Y.-B.,Changzhou University | Xu H.-D.,Jiangsu Din Da Construction and New Technology Corporation | Xi S.-Y.,Changzhou city Planning and Design Institute | Huang Y.,Changzhou University
Advanced Materials Research | Year: 2014

In recent years, building density in the city is increasing as the promoting of urban modernization. Deep foundation pit excavation and bracing is a topic in geotechnical engineering, including strength and stabilization of soil mechanics, and transmutation and sedimentation of deep foundation, and common effect between soil and shoring structure. The paper based on the design and fabrication of indoor model test device. This paper respectively explored the destroy mechanism of cantilever and anchored sheet pile support structure on the soil pressure under the different loads, and comprehensively carried through cantilever and anchored sheet pile support test under four-grades excavation depth and four-grades load combination, and specially researched the transformation of soil pressure. At the same time, the piles spacing changed among 3cm, 4cm and 5cm. Theoretical results showed that the active earth pressure increased with the increase of load and excavation depth. Model test results showed that the earth pressure behind the piles increased with the increase of excavation depth and the load. The biggest earth pressure was 19.38kPa when loading 40kPa. The changing curves of soil pressure were similar when piles spacing was 3cm and 4cm. Earth pressure after the piles was negative when piles spacing exceeded 4cm, which illustrated that active earth pressure had changed into passive soil pressure. © (2014) Trans Tech Publications, Switzerland.


Xia X.,Changzhou University | Wang Y.-B.,Changzhou University | Xi S.-Y.,Changzhou city Planning and Design Institute | Sun J.,Changzhou city Planning and Design Institute | And 2 more authors.
Advanced Materials Research | Year: 2014

This paper carried on the numerical analysis about the impact on soft soil ground seismic effect according to the buried depth and thickness of the soft interlayer, which took Jiangsu typical stratigraphic distribution and some engineering field as the prototype. In order to analyze the impact of buried depth and thickness of soft soil interlayers on the surface of the ground motion parameter, this paper combined with the formation parameters and calculated 3 sections which the thickness of soft soil interlayers were respectively 3m, 5m and 9m, in condition of the buried depth of the soft soil interlayer was constant. Choose ElCENTRO process curve for site seismic response analysis. The results showed that the influence of soft soil interlayer thickness on ground surface acceleration peak value was related with the location of weak interlayer. The influence of soft interlayer thickness on earthquake peak acceleration Amax and the eigenperiod Tg was more obvious; When the thickness of the soft interlayer increased, the earthquake peak acceleration decreased, the maximum speed decreased, and the maximum displacement increase; When the thickness of the soft interlayer increased, The maximum response spectrum decreased, the cycle of response spectrum peak increased, and the eigenperiod increased. © (2014) Trans Tech Publications, Switzerland.


Jiang G.,Nanjing University of Technology | Sun J.,Nanjing University of Technology | Sun J.,Changzhou City Planning and Design Institute | Wang X.-D.,Nanjing University of Technology
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2011

When the composite piled foundation reaches the general ultimate bearing capacity status, an increment of the ultimate bearing capacity for natural foundation is induced by "barrier effect" of piles. The analysis of the problem can be simplified for both the sum of the vertical ultimate bearing capacity of foundation and the increment of the ultimate bearing capacity of foundation soil horizontally sliding around piles. Based on the finite element plastic lower bound limit method, the numerical solutions for the vertical ultimate bearing capacity of foundation and the horizontal resistance sliding around piles varying with soil depth are obtained, and the sliding resistance formula is also established. The sliding resistance coefficient ks reduces with the increase of pile spacing. The increment of the ultimate bearing capacity Δfu decreases with the increase of pile spacing. The results indicate that the resistance sliding around piles in the composite piled foundation is being and can not be ignored, and that the ultimate bearing capacity of the composite piled foundation has certain increment, which can be regarded as the security reserve of foundation.


Xia X.,Changzhou University | Li L.-L.,Changzhou University | Huang Y.,Changzhou University | Xi S.-Y.,Changzhou city Planning and Design Institute | Xu H.-D.,Jiangsu Ding da and New Technology Corporation
Advanced Materials Research | Year: 2014

Horizontal earthquake acceleration is used for slope risk analysis, and the relationship between the dynamical safety factors and corresponding static safety factors is obtained. The reliability of anchored slope is expressed with the safety factor. The synthesized risk evaluation index, which included the dynamical, statically mechanics and reliability analysis, is established. The main procedure of calculation is provided by a practical project in this paper, and the computed example has shown it is worthy to study the method further. © (2014) Trans Tech Publications, Switzerland.


Xia X.,Changzhou University | Li L.-L.,Changzhou University | Huang Y.,Changzhou University | Xu H.-D.,Jiangsu Ding da and New Technology Corporation | Xi S.-Y.,Changzhou city Planning and Design Institute
Advanced Materials Research | Year: 2014

With the development of urban construction, lots of deep foundation pits have come forth continuously. As a new support structure for foundation pit, sheet piles is used in-situ due to its rigidity of pile body, but the mechanism of pile-soil interaction of sheet piles is still unclear. In order to study the bending moment behavior of sheet piles under different excavation situations and surcharge loading, the special device was designed and a series of model tests were conducted to investigate the effects of sheet piles retaining structure. The result indicates that sheet piles bending moment increases with excavations and loadings, but decreases after reaching 30 cm. bending moments are different in different positions, the deformation and moment in middle pile is the largest. Pile bending moment increases when piles spacing increases, for attenuating the pile group effect, pile-soil interaction of sheet piles can be used effectively when piles spacing is 5cm, and the supporting effect is ensured. © (2014) Trans Tech Publications, Switzerland.

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