Successful application of CSAMT for high‐rise buildings' site investigation in urban areas of Tangshan city, China

2010 ◽  
Author(s):  
Qingyun Di ◽  
Diquan Li ◽  
Hui Cheng ◽  
Changmin Fu ◽  
Miaoyue Wang
Keyword(s):  
Urban Areas ◽  
Site Investigation ◽  
High Rise

scholarly journals A Quantitative Method for Evaluation of Visual Privacy in Residential Environments

Buildings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 272
Author(s):  
He Zheng ◽  
Bo Wu ◽  
Heyi Wei ◽  
Jinbiao Yan ◽  
Jianfeng Zhu
Keyword(s):  
Urban Areas ◽  
Architectural Design ◽  
Ground Level ◽  
High Density ◽  
Rapid Expansion ◽  
High Rise ◽  
Visual Exposure ◽  
Building Management ◽  
Visual Privacy ◽  
Building Level

With the rapid expansion of high-rise and high-density buildings in urban areas, visual privacy has become one of the major concerns affecting human environmental quality. Evaluation of residents’ visual exposure to outsiders has attracted more attention in the past decades. This paper presents a quantitative indicator; namely, the Potential Visual Exposure Index (PVEI), to assess visual privacy by introducing the damage of potential visual incursion from public spaces and neighborhoods in high-density residences. The method for computing the PVEI mainly consists of three steps: extracting targets and potential observers in a built environment, conducting intervisibility analysis and identifying visible sightlines, and integrating sightlines from building level and ground level to compute the PVEI value of each building opening. To validate the proposed PVEI, a case study with a sample building located at the center of Kowloon, Hong Kong, was evaluated. The results were in accordance with the common-sense notion that lower floors are subjected to poor visual privacy, and privacy is relatively well-preserved in upper floors in a building. However, residents of middle floors may suffer the worst circumstances with respect to visual privacy. The PVEI can be a useful indicator to assess visual privacy and can provide valuable information in architectural design, hotel room selection, and building management.

scholarly journals Integration of the Urban Local Bodies for Disaster Mitigation in Aizawl City

2019 ◽  
Vol 4 (1) ◽  
pp. 70-81
Author(s):  
Malsawmi Pachuau
Keyword(s):  
Disaster Management ◽  
Urban Areas ◽  
Local Community ◽  
Local Level ◽  
Search And Rescue ◽  
Disaster Mitigation ◽  
The Public ◽  
High Rise ◽  
The People ◽  
Post Disaster

Local government plays an integral part in the mechanism of Disaster Management in Mizoram. The local bodies are the direct representatives of the local community and the local community places their full trust in them. Post disaster measures such as mock drills, training of search and rescue teams, physical and economic relief and rehabilitation are not something new to us, yet the aspect of disaster mitigation is something which has not bred familiarity among the Mizos. The need for sensitization of the public on the importance of Disaster Mitigation is a necessity. The saying ‘Earthquakes do not kill people; buildings do’ is pertinent in urban areas. Urban areas are congested and more prone to disasters. High rise buildings, squatter settlements due to high densities and low availability of land has endangered not just the lives of the public but has also caused a massive disturbance of the ecological system. The paper covers certain Acts and Regulations of the Aizawl Municipal Corporation dealing with structural mitigation and the detection of illegal construction, unsafe buildings, and encroachments on municipal and public properties. At the local level, the councillors are involved in making, unmaking and carrying out these rules and regulations, with direct bearing on the local people. The paper also gives an account of the need of reimplementation to generate awareness, knowledge and education on Disaster Management to the people of Mizoram.

scholarly journals SEISMIC ANALYSIS OF MULTISTORIED IRREGULAR AND REGULAR BUILDING WITH MASONARY INFILLS

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
Ashutosh Shrivastava ◽  
Rajesh Chaturvedi
Keyword(s):  
Urban Areas ◽  
Seismic Analysis ◽  
Response Spectrum ◽  
Pushover Analysis ◽  
Seismic Zone ◽  
Soft Storey ◽  
High Rise ◽  
Frame Building ◽  
Performance Point ◽  
Open Ground

Nowadays, as in the urban areas the space available for the construction of buildings is limited. So in limited space we have to construct such type of buildings which can be used for multiple purposes such as lobbies, car parking etc. To fulfill this demand, high rise buildings is the only option available. The performance of a high rise building during strong earthquake motion depends on the distribution of stiffness, strength and mass along both the vertical and horizontal directions. If there is discontinuity in stiffness, strength and mass between adjoining storeys of a building then such a building is known as irregular building. The present study focuses on the seismic performance of regular and vertical irregular building with and without masonary infills. In the present study G+11 building is considered for the analysis with modelling and analysis done on ETABS software v17.0.1. The earthquake forces are calculated as per IS 1893 (part 1): 2016 for seismic zone III. The width of strut is calculated by using equivalent diagonal strut method. Total five models are considered for the analysis i.e. regular building with bare frame, regular building with masonary infill, soft storey building with open ground storey, mass irregular building with masonary infill and vertical geometric irregular building with masonary infill. The non-linear static analysis (pushover analysis) and linear dynamic analysis (response spectrum analysis) are performed for all the models and thereby compare their results. From analysis, the parameters like performance point, time period, maximum storey displacement, maximum storey drifts, storey shears and overturning moments are determined and also comparative study is done for all the models. From the comparison, it is observed that the vertical geometric irregular building shows better performance under seismic loading and bare frame building shows inferior performance. Moreover, the performance of masonary infilled frame building is f

Soft zones in the glacial till in downtown Edmonton

1982 ◽  
Vol 19 (2) ◽  
pp. 175-180 ◽  
Author(s):  
S. Thomson ◽  
R. L. Martin ◽  
Z. Eisenstein
Keyword(s):  
Recent Work ◽  
Case History ◽  
Early Experience ◽  
Site Investigation ◽  
Glacial Till ◽  
Geological Model ◽  
High Rise ◽  
Material Type ◽  
Spread Footings

High-rise buildings in downtown Edmonton have generally been founded on spread footings in glacial till. Early geotechnical work proposed a geological model comprising uniform, very dense basal (lodgement) till. However, recent work shows that the till is more complex, being variable in both material type and consistency. A case history is described that exemplifies this variability. It is concluded that early experience with the dense tills has led to an overconfident approach to soil investigation in this area and that a thorough site investigation is required.

scholarly journals Modelling the impact of high-rise buildings in urban areas on precipitation initiation

2007 ◽  
Vol 14 (2) ◽  
pp. 149-161 ◽  
Author(s):  
M. G. D. Carraça ◽  
C. G. Collier
Keyword(s):  
Urban Areas ◽  
High Rise ◽  
The Impact

scholarly journals Optimization to water supply system design and operation scheme in high rise buildings

2018 ◽  
Vol 12 (3) ◽  
pp. 123-131
Author(s):  
Nguyen Lan Huong ◽  
Nguyen Viet Anh ◽  
Dang Thi Thanh Huyen ◽  
Tran Hoai Son ◽  
Dinh Viet Cuong
Keyword(s):  
Water Supply ◽  
Urban Areas ◽  
Greenhouse Gas Emission ◽  
Electricity Consumption ◽  
Structural System ◽  
Electrical System ◽  
Pump System ◽  
High Rise ◽  
Reduce Electricity Consumption ◽  
Scale Experiment

Greenhouse Gas emission from high-rise buildings has been increasing mainly due to excessive energy consumption of the HVAC system, structural system and electrical system. Electricity consumption for pump system accounts for 15% of total electricity usage in building. Therefore the reduction of electricity in operation is crucial to the overall reduction of GHGs in urban areas. In this study, a lab-scale experiment was conducted to test the electricity consumption in applying different design approaches; the energy efficiency of the system was calculated. Finally, this study proposes the advanced water supply design scheme to reduce electricity consumption of the pump system. Article history: Received 12 March 2018, Revised 03 April 2018, Accepted 27 April 2018

scholarly journals The impact of building height on urban thermal environment in summer: A case study of Chinese megacities

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0247786
Author(s):  
Meiya Wang ◽  
Hanqiu Xu
Keyword(s):  
Land Surface ◽  
Urban Areas ◽  
Single Channel ◽  
Thermal Environment ◽  
Quantitative Relationship ◽  
Cooling Effect ◽  
Height Range ◽  
Building Height ◽  
High Rise ◽  
The Impact

The quantitative relationship between the spatial variation of building’s height and the associated land surface temperature (LST) change in six Chinese megacities is investigated in this paper. The six cities involved are Beijing, Shanghai, Tianjin, Chongqing, Guangzhou, and Shenzhen. Based on both remote sensing and building footprint data, we retrieved the LST using a single-channel (SC) algorithm and evaluate the heating/cooling effect caused by building-height difference via correlation analysis. The results show that the spatial distribution of high-rise buildings is mainly concentrated in the center business districts, riverside zones, and newly built-up areas of the six megacities. In the urban area, the number and the floor-area ratio of high to super high-rise buildings (>24m) account for over 5% and 4.74%, respectively. Being highly urbanized cities, most of urban areas in the six megacities are associated with high LST. Ninety-nine percent of the city areas of Shanghai, Beijing, Chongqing, Guangzhou, Shenzhen, and Tianjin are covered by the LST in the range of 30.2~67.8°C, 34.8~50.4°C, 25.3~48.3°C, 29.9~47.2°C, 27.4~43.4°C, and 33.0~48.0°C, respectively. Building’s height and LST have a negative logarithmic correlation with the correlation coefficients ranging from -0.701 to -0.853. In the building’s height within range of 0~66m, the LST will decrease significantly with the increase of building’s height. This indicates that the increase of building’s height will bring a significant cooling effect in this height range. When the building’s height exceeds 66m, its effect on LST will be greatly weakened. This is due to the influence of building shadows, local wind disturbances, and the layout of buildings.

scholarly journals High-Rise Buildings Aspects and Significant Impacts in Urban Areas

2017 ◽  
Vol 06 (10) ◽  
pp. 20-26
Author(s):  
Wezha Hawez Baiz ◽  
Dedar Salam Khoshnaw ◽  
Anjam H. Byze
Keyword(s):  
Urban Areas ◽  
High Rise

scholarly journals A Review on Seismic Issues and Remedies in High-Rise Structures

2021 ◽  
Author(s):  
Adarsh S ◽  
Sajeeb R
Keyword(s):  
Urban Areas ◽  
Seismic Vulnerability ◽  
Base Isolation ◽  
High Strength ◽  
Seismic Retrofitting ◽  
Limited Area ◽  
Large Area ◽  
Isolation System ◽  
Ground Shaking ◽  
High Rise

The increase in population in urban areas have popularised high rise structures, as a means of accommodating more people in a limited area. The major concerns in the designing and construction of high-rise structures are the safety aspects against wind and earthquake forces, as the collapse of the structure can lead to a disaster. The seismic zoning map of India shows that a large area of India is prone to earthquakes. The growing use of high strength and lightweight materials in high-rise structures makes them more flexible and lightly damped, thereby making these structures more sensitive to dynamic excitations. Presence of irregularities, setbacks, open ground story, weak and soft storeys, also increases the seismic vulnerability of high-rise structures. Vertical ground shaking can be of significant concern in terms of amplification of acceleration along the height of the building, and also, achieving vertical isolation had been challenging as the gravitational load must be sustained by the isolation system. Quasi-Zero stiffness system was found to be effective in vertical isolation of structures. Installing damping devices at optimal locations, base isolation systems, and suitable seismic retrofitting strategies can enhance the seismic performance of structures. This paper reviews the various factors that lead to seismic issues in high-rise structures such as size, shape, configuration, structural aspects, and material properties. The appropriate remedies to address the seismic issues are also reviewed.

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