Urban Road Cross Section Eco-Design Based on Storage-Infiltration of Rainwater and Snowfall

2011 ◽  
Vol 368-373 ◽  
pp. 3741-3744
Author(s):  
Hu Zhu Zhang ◽  
Hui Min Li
Keyword(s):  
Cross Section ◽  
Water Conservation ◽  
Green Space ◽  
Drainage System ◽  
Urban Road ◽  
Balance System ◽  
Adverse Action ◽  
Design Program ◽  
Practical Engineering ◽  
Traffic Organization

In order to deal with the problem of flood disaster, water balance system damage and eco-environment deterioration for cities with development of urbanization in rain and snow area, an urban road cross section eco-design program with storage-infiltration utilization of rainwater and snowfall was proposed with the purpose of groundwater eco-replenishment, water conservation and snowfall stack, also ecological cross section form that can be used in practical engineering and enhancement of infiltration capability for sunken green space of urban road were put forward, and some effective anti-infiltration measures for subgrade and pavement were proposed to prevent the adverse action on urban road from the water in the sunken green space. The eco-design program increases storage-infiltration of rainwater and snowfall with holding the function of traffic organization, drainage and road landscape that belongs to the traditional urban road cross section, and it changed a single drainage system into a compositive storage-infiltration-drainage system. The eco-design program provided a basis and reference for urban road cross section eco-design in rain and snow area.

scholarly journals PEMANFAATAN SIKLUS PEMBUANGAN AIR TERHADAP SISTEM DRAINASE PERUMAHAN KOTA

2018 ◽  
Vol 2 (2) ◽  
pp. 1
Author(s):  
Azwarman Azwarman
Keyword(s):  
Cross Section ◽  
Water Conservation ◽  
Flood Control ◽  
Rectangular Cross Section ◽  
Drainage System ◽  
Water Shortages ◽  
The Earth ◽  
Excess Water ◽  
Conservation Efficiency

Flooding as one of the big problems in Jambi City can be overcome by arranging drainage and drainage system for flood control. However, excess water during floods and used in anticipation of water shortages during the dry season has not been widely studied. The basic principle of water utilization is the engineering into a system of absorption wells or also known as water conservation which aims to prevent or minimize the lost water as the flow of the surface and store it as much as possible into the earth. The study was conducted in Jambi City, taking a case study of housing by conducting engineering to the housing drainage system so that new designs are emerging. The analysis is in the form of field observation and data analysis. This residential location is located in Paalmerah Village with 78/105 building type and there are 23 units of buildings with garden facilities and security. The results show that based on the intensity of rainfall, the dimensions of absorption wells and reservoirs can be determined for Jatayu housing. The dimension of absorption well is with the diameter of circle 1m and height 1.89 m while for the storage tub dimension is rectangular cross section with size 2m x 1.5 m x 1.5 m.Keywords: rainfall, water conservation, efficiency

Modelling solid transport in building drainage systems

1996 ◽  
Vol 33 (9) ◽  
pp. 9-16 ◽  
Author(s):  
John A. Swaffield ◽  
John A. McDougall
Keyword(s):  
Decision Making ◽  
Boundary Conditions ◽  
Numerical Solution ◽  
Water Conservation ◽  
Transient Flow ◽  
Drainage System ◽  
System Model ◽  
Flow Depth ◽  
Flow Conditions ◽  
Solid Transport

The transient flow conditions within a building drainage system may be simulated by the numerical solution of the defining equations of momentum and continuity, coupled to a knowledge of the boundary conditions representing either appliances discharging to the network or particular network terminations. While the fundamental mathematics has long been available, it is the availability of fast, affordable and accessible computing that has allowed the development of the simulations presented in this paper. A drainage system model for unsteady partially filled pipeflow will be presented in this paper. The model is capable of predicting flow depth and rate, and solid velocity, throughout a complex network. The ability of such models to assist in the decision making and design processes will be shown, particularly in such areas as appliance design and water conservation.

The Observation of Rainwater Harvesting Potential in Mahasarakham University (Khamriang Campus)

2013 ◽  
Vol 807-809 ◽  
pp. 1087-1092 ◽  
Author(s):  
Nida Chaimoon
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Water Conservation ◽  
Rainwater Harvesting ◽  
Flow Analysis ◽  
Treatment Plant ◽  
Drainage System ◽  
Material Flow Analysis ◽  
Sustainable Living ◽  
Water Treatment Cost

Rainwater harvesting from roof is considered as valuable water resources. Material Flow Analysis (MFA) of water in Mahasarakham University (Khamriang Campus) shows that rainwater harvesting from roof can reduce water supply production by 7% and save more than 200,000 Bt/year for water treatment cost. The sensitivity analysis suggests that by 5% water supply conservation and 20% additional rainwater harvesting, MSU could have enough water resources. The rainwater is suitable to be substituted water for gardening due to the convenience to assemble an above ground storage tank or a pond to store harvested rainwater from roof. The current practice of rainwater is collected and discharged into drainage system and treated in wastewater treatment plant. Utilisation of rainwater harvested could reduce wastewater amount that must be treated by 9%. Rainwater harvesting and reuse should be promoted in campus in order to encourage sustainable living and water conservation policy.

A New Continuous Flow Intersection for Urban Road: Architecture, Design, and Simulation

2012 ◽  
Vol 209-211 ◽  
pp. 677-682 ◽  
Author(s):  
Qiu Chen Liu ◽  
Lun Zhang ◽  
Wen Chen Yang
Keyword(s):  
Traffic Control ◽  
Continuous Flow ◽  
Left Turn ◽  
Urban Road ◽  
Traffic Efficiency ◽  
Traffic Conditions ◽  
Simulation Results ◽  
Low Efficiency ◽  
And Performance ◽  
Traffic Organization

In the light that heavy left-turn vehicles and oncoming vehicles conflict at conventional intersection(CI), leading to discontinuity and low efficiency of traffic flow, this paper presents a new continuous flow intersection(CFI) for urban roads. The geometry physical model and design principles of the CFI are illustrated and the CFI is designed from following three aspects: traffic space, traffic organization and traffic control. Experiments taking the CI and corresponding the CFI as the reseach objects are carried on, and performance of the proposed the CFI is validated via VISSIM. Extensive simulation results under five traffic conditions have demonstrated the potential of the proposed the CFI for improvement of traffic efficiency, and the applicability of the CFI in China is discussed considering the characteristics of domestic urban intersections and it indicates that the CFI could be applied to domestic suburb roads.

Storage-Infiltration Effect of Rainfall for Sunken Greenbelt in Urban Road

2013 ◽  
Vol 838-841 ◽  
pp. 1216-1220 ◽  
Author(s):  
Hu Zhu Zhang ◽  
Hui Min Li ◽  
Gui Fei Wei
Keyword(s):  
Influence Factors ◽  
Infiltration Rate ◽  
Recurrence Interval ◽  
Time Interval ◽  
Rainfall Runoff ◽  
Soil Infiltration ◽  
Infiltration Capacity ◽  
Urban Road ◽  
Design Program ◽  
Changchun City

In order to study the storage-infiltration effect of rainfall for sunken greenbelt in urban road, its storage-infiltration capacity of rainfall runoff was analyzed based on the rainfall balance equation of urban road in the time interval, and then the computational formulae of storage-infiltration rate was derived. Influence factors on storage-infiltration rate, such as design recurrence interval of rainfall, soil infiltration coefficient, greenbelt rate, and depth of sunken greenbelt, etc. were computed and analyzed by using the derived computational formulae with the rainfall intensity of Changchun city. Results show that: on the same condition, storage-infiltration rate of rainfall for sunken greenbelt in urban road increases linearly with the increase of soil infiltration coefficient, greenbelt rate, and depth of sunken greenbelt, and decreases with the increase of design recurrence interval of rainfall. Sunken greenbelt with depth of 0.05 ~ 0.25m can storage-infiltrate all of the rainfall that falls on the urban road when the greenbelt rate of urban road ranges from 20% to 40%. Eco-design program of sunken greenbelt in urban road is reasonable and feasible, and its storage-infiltration effect of rainfall is remarkable.

Current Status of Green Space and Plant Disposition in the Urban Road Landscape Design

2012 ◽  
Vol 209-211 ◽  
pp. 352-356
Author(s):  
Xu Zhou ◽  
Lin Zhang ◽  
Zhao Fei Zhang
Keyword(s):  
Green Space ◽  
Relative Concentration ◽  
Ornamental Plants ◽  
Plant Species Richness ◽  
Current Status ◽  
Plant Family ◽  
Urban Road ◽  
Regional Landscape ◽  
Plant Families ◽  
Pedestrian Street

This study conducts investigations on the plants and plant landscaping in the two regions - Huangxing Commercial Pedestrian Street and Furong Road, which are representative and with relative concentration of population flow and traffic flow. The statistics results show that there are a total of 21 families and 25 species of ornamental plants applied in Huangxing Pedestrian Street, of which arbors and shrubs are widely used with 11 species of arbors, and 11 species of small arbors and shrubs; in terms of plant families, plants from Oleaceae, Pinaceae and Celastraceae families are more frequently used. There are a total of 12 families and 15 species of ornamental plants applied in the Furong Road, of which shrubs are more extensively used with 10 species; in terms of plant family and genera, plants from Oleaceae, Rosaceae and Theaceae families are more frequently used. On this basis, and combining with the different plant combinations and collocations, this paper conducts comparative analysis on the regional landscape arrangement modes and features, and points out the shortcomings of plant species richness and landscape levels in the plant landscapes of the two regions.

Study on Off-Stream Ecological Water Demand of Fu River Basin

2014 ◽  
Vol 641-642 ◽  
pp. 92-96
Author(s):  
Fa Lei Wang ◽  
Wei Hu
Keyword(s):  
River Basin ◽  
Water Conservation ◽  
Water Demand ◽  
Green Space ◽  
Sewage Treatment ◽  
Scientific Basis ◽  
Soil And Water Conservation ◽  
Ecological Water Demand ◽  
Public Green Space ◽  
Soil And Water

According to researches on mechanism and concept of off-stream ecological water demand, off-stream ecological water demand of Fu River Basin is consist of ecological water demand for soil and water conservation and for urban public green space, considering the current situation and planning objectives of off-stream ecological water demand of Fu River Basin. Directly calculation method is employed in this study. Choosing 2005 as the current year in this study, indicators of public green space and soil erosion data are obtained. Then the ecological water demand of urban public green space in Fuzhou City is determined as 0.438×108m3 and the water demand for off-stream soil and water conservation in Fu River Basin is determined as 0.3159×108m3 in virtue of quota method. The off-stream ecological water demand in the Basin (2005 as the current year) is about 0.359×108m3. The determination of the off-stream ecological water demand in the basin provide a scientific basis on taking a variety of water-saving measures, improving the recovery rate of sewage treatment and increasing the off-stream ecological water consumption. Results of this study will make the ecological environment of this area to achieve a healthy state, and shall greatly improve regional water resources and water environmental situation.

scholarly journals Analysis of External Water Pressure for a Tunnel in Fractured Rocks

Geofluids ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Ze-jun Liu ◽  
Yong Huang ◽  
Ding Zhou ◽  
Hong Ge
Keyword(s):  
Water Conservation ◽  
Water Pressure ◽  
Scientific Evidence ◽  
Drainage System ◽  
Fracture Network ◽  
Influential Factor ◽  
Normal Operation ◽  
Fracture Development ◽  
External Water Pressure ◽  
External Water

External water pressure around tunnels is a main influential factor in relation to the seepage safety of underground chambers and powerhouses which make managing external water pressure crucial to water conservation and hydropower projects. The equivalent continuous medium model and the discrete fracture network (DFN) model were, respectively, applied to calculate the seepage field of the study domain. Calculations were based on the integrity and permeability of rocks, the extent of fracture development, and the combination of geological and hydrogeological conditions in the Huizhou pump-storage hydropower station. The station generates electricity from the upper reservoir and stores power by pumping water from the lower to the upper reservoir. In this paper, the external water pressure around the cavern and variations in pressure with only one operational and one venting powerhouse were analyzed to build a predictive model. The results showed that the external water pressure was small with the current anti-seepage and drainage system that normal operation of the reservoir can be guaranteed. The results of external water pressure around the tunnels provided sound scientific evidence for the future design of antiseepage systems.

The Program Design of the Variable Cross-Section of Concrete Continuous Skew Beam Bridge

2008 ◽  
Vol 400-402 ◽  
pp. 633-638
Author(s):  
Min Chen ◽  
Zhong Chu Tian ◽  
Guo Liang Zeng
Keyword(s):  
Cross Section ◽  
Concrete Beams ◽  
Variable Cross Section ◽  
Variable Cross ◽  
Girder Bridges ◽  
Practical Engineering ◽  
Uniform Cross Section ◽  
Girder Bridge ◽  
Beam Bridge ◽  
Compound Section

In practical engineering, we often encounter designs of variable cross-section or compound section skew girder bridge. While in many bibliographies, uniform cross-section of the concrete beams studying was carried out, but few of variable cross-section concrete beams were in-depth studied. Based on analyzing the mechanical behavior of variable cross-section beam skew girder bridge, the semi-analytic solution of variable cross-section beam skew girder bridges were provided in this paper. With this method developed a planar computation program to resolve the calculation problems of skew girder bridge, a more convenient way will be brought up for designers in calculation.

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