Reliability Analysis of H-Beam Transfer Truss Under Construction Loads

2010 ◽  
Vol 163-167 ◽  
pp. 745-748
Author(s):  
Zheng Fa Chen ◽  
Gui Feng Liu
Keyword(s):  
Reliability Analysis ◽  
Calculation Model ◽  
Office Building ◽  
Force Analysis ◽  
H Beam ◽  
Under Construction ◽  
Construction Loads ◽  
The Right ◽  
Design And Application

Study on the reliability of H-beam transfer truss was based on the rebuilding of 1# office building of Chinese Ministry of Commerce. Under construction loads, the force analysis of the H-beam transfer truss was carried out with the software STS2005.12. In the paper, the right of trusses node connection was first chosen, and a plane calculation model of H-beam transfer truss was established based on some reasonable assumptions. Then, the force of H-beam transfer truss under construction loads was analyzed with the calculation model, in determining a reasonable control indexes and calculation parameters. From the results of analysis, we could see that the design and application of H-beam transfer truss in the stage of construction was safe and reliable, in the dismantling concrete post of old structure.

One Vanderbilt: Unprecedented Project Delivery Through Integrated Innovation

2019 ◽  
Author(s):  
Andrew Cleary ◽  
Edward M. DePaola ◽  
Christopher R. Horch
Keyword(s):  
New York ◽  
Structural Steel ◽  
Fast Track ◽  
Urban Environments ◽  
Advanced Technology ◽  
Parametric Modelling ◽  
Under Construction ◽  
Construction Loads ◽  
Design Schedule ◽  
Construction Documents

<p>One Vanderbilt Avenue, currently under construction in midtown Manhattan, will be one of the tallest buildings in New York. By collaborating with the construction teams in the early stages of the design, the foundations and the superstructure were able to proceed well in advance of a typical project. For example, the structural steel was erected to the 6th floor, was fabricated to the 32nd Floor, and the shop drawings were checked up to the 45th floor on the day that the 100% Construction Documents were issued.</p><p>The structural steel frame was designed so that its core columns only carried 12 levels of framing and construction loads during the tower’s erection. A concrete shear wall system followed the steel framing, permitting the steel erection to proceed without regard to the concrete operations. When complete, the project will stand 1,401 feet tall and contain 26,000 tons of structural steel, and 93,000 cubic yards of concrete.</p><p>The presentation focuses on the challenges and technological requirements for vertical construction in dense urban environments. It explains the amount of detail, thought, and knowledge of construction that must happen earlier in the design process and the participants will appreciate how the fast‐track process can be applied to complex architectural, mechanical and structural designs.</p><p>It describes the integration of design team parametric modelling with the construction process early in the design schedule. Fast‐track projects with complex designs like One Vanderbilt can be successfully completed by understanding and integrating an IPD process, even with competing objectives. The presentation discusses the challenges and technological requirements for vertical construction in dense urban environments, including the importance of direct links to mass transportation.</p><p>This type of team structure is the future of the industry, and One Vanderbilt is the first of its kind to illustrate how innovative design ambitions are being realized through the use of increasingly refined and advanced technology.</p>

Roof Cover Impact on Cooling Energy Use of Office Buildings

2014 ◽  
Author(s):  
Moncef Krarti
Keyword(s):  
Energy Use ◽  
Energy Savings ◽  
Simulation Analysis ◽  
Calculation Model ◽  
Office Building ◽  
Climate Zones ◽  
Building Energy Use ◽  
Detailed Simulation ◽  
Simplified Calculation ◽  
The Impact

This paper analyzes the impact of roof covers on office building energy use for representative US climate zones. In particular, the study presented in the paper investigates the potential annual cooling energy use savings that roof covers could provide using whole-building simulation analysis to evaluate the performance of a 2-story office building in five US locations. Three parameters of the roof covers including their size, height, and transmittance, are considered in the analysis. The simulation results indicate that while roof covers had similar affects on buildings in all climate zones, their impact in reducing cooling energy usage is different and is more pronounced in cooler climates. Specifically, roof covers could potentially achieve cooling energy savings of up to: 25% in Houston, 33% in Atlanta, 31% in Nashville, 38% in Chicago, and 41% in Madison. Based on the detailed simulation analysis results, a simplified calculation model is developed to help the estimation of cooling energy savings as a function of the roof cover size, height, and transmittance.

scholarly journals Impact of Sloshing on Fossil Fuel Loss during Transport

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2625
Author(s):  
Hafsa Mir ◽  
Tahir Abdul Hussain Ratlamwala ◽  
Ghulam Hussain ◽  
Mohammed Alkahtani ◽  
Mustufa Haider Abidi
Keyword(s):  
Road Transport ◽  
Hydrocarbon Emissions ◽  
Transportation Industry ◽  
Oil Companies ◽  
Fuel Loss ◽  
Northern Areas ◽  
Transport Losses ◽  
Fuel Tanks ◽  
Under Construction ◽  
The Right

This study attempts to uncover the most common issue of fuel shortage faced by the oil and transportation industry worldwide. In Pakistan, petroleum is transported to the northern areas from the south coast. Currently, this is done using road tankers as a pipeline is still under construction. However, even after the pipeline becomes operative, road tankers would still be used for intra-city transport. Findings from this study can be used to determine the inter-city transport losses faced by oil companies. This study determines the hydrocarbons lost to the environment during inter-city road transport of petroleum. It takes nearly 2–3 days to complete a one-way trip with the fully loaded tank. Much work has been reported worldwide on hydrocarbon emissions, but nearly all of it has been done either for storage tanks/vessels or fuel tanks in rails/cars. The aim of this study was to investigate the actual amount of fuel lost to the environment due to the sloshing of liquid. Also, the results were expected to help in determining the extent of hazardous emissions resulting from road transport of petroleum. Hence, measures could be taken by the concerned authorities to mitigate the emissions if they exceeded the acceptable range. The sloshing was not found to contribute much in terms of vapor loss. Valve location was found to be important as no loss was obtained from the third compartment because the valve is to the right in this chamber. A negligible amount of fuel was lost from the first and second compartments per application of the brakes. Over a whole trip of 2–3 days, if the tanker braked 500 times, a total of 9–10 L would be lost to the environment.

Design Optimization Method for Composite Components Based on Moment Reliability-Sensitivity Criteria

2017 ◽  
Vol 34 (3) ◽  
Author(s):  
Zhigang Sun ◽  
Changxi Wang ◽  
Xuming Niu ◽  
Yingdong Song
Keyword(s):  
Sensitivity Analysis ◽  
Design Optimization ◽  
Reliability Analysis ◽  
Efficient Method ◽  
Ceramic Matrix Composites ◽  
Optimization Method ◽  
Calculation Model ◽  
Arbitrary Distribution ◽  
Engineering Practice ◽  
Reliability Sensitivity

AbstractIn this paper, a Reliability-Sensitivity Based Design Optimization (RSBDO) methodology for the design of the ceramic matrix composites (CMCs) components has been proposed. A practical and efficient method for reliability analysis and sensitivity analysis of complex components with arbitrary distribution parameters are investigated by using the perturbation method, the respond surface method, the Edgeworth series and the sensitivity analysis approach. The RSBDO methodology is then established by incorporating sensitivity calculation model into RBDO methodology. Finally, the proposed RSBDO methodology is applied to the design of the CMCs components. By comparing with Monte Carlo simulation, the numerical results demonstrate that the proposed methodology provides an accurate, convergent and computationally efficient method for reliability-analysis based finite element modeling engineering practice.

scholarly journals Sluice Safety Reliability Analysis - Application for Baovan Sluice in Vietnam

2019 ◽  
Vol 8 (10) ◽  
pp. 3473-3477
Keyword(s):  
Reliability Analysis ◽  
System Analysis ◽  
Calculation Model ◽  
Safety Factors ◽  
Factors Analysis ◽  
Reliability Calculation ◽  
Simulation Calculation ◽  
System Analysis Approach ◽  
Analysis Application ◽  
Definition Of

The article summarizes the irrigation works designing methods in Vietnam and other countries. While in Vietnamirrigation systemdesign method is deterministic and based on safety factors analysis, in other countries it’s popular with random design and reliability analysis. This is a modern design model and widely used in many fields in the world. Therefore, in this study, the authors presented how to develop sluice reliability calculation method under system analysis approach: definition of sluice s, problem tree, reliability functions for system simulation, calculation of reliability for works and works system, calculate reliability Bao Van sluice in Thanh Hoa province according to the introduced calculation model and proposie solutions to improve the reliability of the sluice if repaired or upgraded..

TDABC to Determine the Cost of Retirement Procedures: Applied at Universidade Federal Do Rio Grande Do Norte

2019 ◽  
Vol 10 (4) ◽  
pp. 343-355
Author(s):  
Diogo de Menezes Cortês Bezerra ◽  
◽  
Ridalvo Medeiros Alves de Oliveira ◽  
Keyword(s):  
Rio Grande ◽  
Calculation Model ◽  
Cost Calculation ◽  
Activity Based Costing ◽  
Application Process ◽  
Public Servants ◽  
The Public ◽  
State Educational ◽  
The Right ◽  
The Cost

In 2017, a predictable change in the Brazilian social security legislation encouraged many public servants to apply for their retirement in order to avoid losing some benefit they had the right to gain. This sudden demand for retirement applications brought some awareness to the cost of retirement processes provided to Brazilian state educational institutions. Specifically, in this work, we aim to present a cost calculation model for a retirement application process provided to the public servants of Universidade Federal do Rio Grande do Norte. This model is based on the Time-Driven Activity-Based Costing. The methodology used to determine this model included field study and interviews with managers of departments where retirement processes are dealt with. The most challenging step on the development of this research was to determine the precise measurement of the expenditure. Results found were satisfactory, considering that any and all expenditure data and budget transparency of the public department is relevant for social control and for the management of public institutions.

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