The Mechanics Behavior Study of Four-Cell Concrete Rectangle Liquid-Storage Structure under the Thermal Envirement

2010 ◽  
Vol 163-167 ◽  
pp. 1236-1240
Author(s):  
Xuan Sheng Cheng ◽  
Zhi Zhou

Reinforced concrete is the current main material to build liquid-storage structure. Because coarse aggregate and fine aggregate have different expansion coefficient under thermal environment, the expansion crack and leakage will happen. it will make liquid-storage structure failure. So thermal effect has become the most important factor that can not be ignored in the structure analysis and design. In this paper, adopting FEM software ANSYS, considering four-cell reinforced concrete rectangular liquid-storage structure at different temperature, heat-solid coupling numerical simulation analysis is proceeded, and the axial (shear) force and bending moment distribution are obtained.

2011 ◽  
Vol 243-249 ◽  
pp. 765-768
Author(s):  
Xuan Sheng Cheng ◽  
Jun Ling Wang

According to liquid-solid coupling vibration analysis model of reinforced concrete rectangular liquid-storage structure on Winkler elastic foundation, and assuming that liquid is ideal. According to existing literature, for the sake of engineering application, the influence of dimensionless parameters on liquid-solid coupling vibration frequency of rectangular liquid-storage structure is discussed. And so a theory base about the design calculation of rectangular liquid-storage structure is provided for subsequent engineering structure.


2017 ◽  
Vol 63 (1) ◽  
pp. 33-45 ◽  
Author(s):  
Xuansheng Cheng ◽  
De Li ◽  
Peijiang Li ◽  
Xiaoyan Zhang ◽  
Guoliang Li

AbstractConsidering concrete nonlinearity, the wave height limit between small and large amplitude sloshing is defined based on the Bernoulli equation. Based on Navier-Stokes equations, the mathematical model of large amplitude sloshing is established for a Concrete Rectangle Liquid-Storage Structure (CRLSS). The results show that the seismic response of a CRLSS increases with the increase of seismic intensity. Under different seismic fortification intensities, the change in trend of wave height, wallboard displacement, and stress are the same, but the amplitudes arc not. The areas of stress concentration appear mainly at the connections between the wallboards, and the connections between the wallboard and the bottom.


2020 ◽  
Vol 2 (3) ◽  
pp. 1-12
Author(s):  
Agyanata Tua Munthe ◽  
Guntur Jatmiko

The construction of a 5-stored parking building is planned to use a flat slab (with drop panels). Flat slab (with drop panel) is a type of two-way plate without beams that directly rests on the column. the flat slab can reduce the height of the structure and construction time. However, flat slabs require plates that are thicker than usual to overcome deflection and punching shears. In this final project, a 5-story reinforced concrete structure will be reviewed with a span of 8 x 8.3 m. Analysis and design was carried out with the help of the 2016 ETABS program to find the value of intersection between floors, shear moments and forces taking into account the consequences of dead load, super dead load, life, and earthquake (dynamic)


The rapidly developing world, in construction industry software’s are used today is the urgent necessity of the moment in order to match the peace of infrastructural development. The main objective of the study is checking the computability of results. The analysis and design of Reinforced Concrete structures is a final stage in the construction industry to deliver the projects with in the estimated time and within the budget. Analysis and design tasks is not an easy matter of fact. Especially specialized software’s are used such as Robot structural Analysis, MIDAS Gen, SAP2000, STAAD PRO, ETABS, TEKLA Structural designer, S-Frame and so on. To gain the design results most commonly used software are validated. In manual design process Indian Standard Codes are utilized and different design modules are used to gain the confidence of the users. The basic elements of a RC Structure such as beams, columns and simple frame have been discussed. In analysis process, shear force and bending moment of beams and columns are comparable in all cases. Thereafter the loads are calculated namely the dead loads, which depend on the unit weight of the materials used (concrete, brick), live loads, which according to the code IS 875-1987 and earthquake load according to IS1893 (PART-1). IS 456:2000 code of practice for plain and reinforced concrete and IS 800:2007 limit state design and seismic ductile design IS:13920(2016) and seismic loading IS 1893 (part 1):2016 and wind loading IS875(part 3):1987. Finally, the footings are designed based on loading from the column and the soil bearing capacity for the particular area. Most importantly, the sections must be checked for all the four components with regard to strength and serviceability factors.Construction plays a significant role in the emergence of ecological problems such as environmental pollutions, energy consumption and carbon emission and so on. In the emergence of ecological situations the specific attention has to be devoted and develop the sustainable and green solutions in the design of buildings and structures.


2018 ◽  
Vol 12 (1) ◽  
pp. 234-250
Author(s):  
Muhammad Umair Saleem ◽  
Hassan Khurshid ◽  
Hisham Jahangir Qureshi ◽  
Zahid Ahmad Siddiqi

Background: Reinforced concrete silos and bunkers are commonly used structures for large storage of different materials. These structures are highly vulnerable when subjected to intense seismic forces. Available guidelines for analysis and design of these structures require special design skills and code procedures. Objective: The current study is aimed to elaborate the design procedures from different sources to a unified method, which can be applied to a larger class of reinforced concrete silos. In this study, analysis and design procedures are summarized and presented in a simplified form to make sure the efficient practical design applications of reinforced concrete silos. Method: Four different cases of silo design based on the type and weight of stored material were considered for the study. For each case, the silo was designed using given design procedure and modeled using FEM-based computer package. All of the reinforced concrete silos were subjected to gravity, wind and seismic forces. Results: After performing the analysis and design of different silos, the bending moment, shear force and axial forces profiles were given for a sample silo. The results obtained from the proposed design procedure were compared with FEM values for different components of silos such as slab, wall and hopper. Conclusion: The comparison of tangential and longitudinal forces, bending moments, shear forces and reinforcement ratios of different parts of silos have shown a fair agreement with the FEM model results. It motivates to use the proposed design procedure for an efficient design of reinforced concrete silos.


2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Xuansheng Cheng ◽  
Wei Jing ◽  
Jia Chen ◽  
Xiaoyan Zhang

The soil-structure interaction (SSI) is simulated by an artificial boundary, the pounding that occurs between the sliding base-isolated rectangular liquid-storage structure (LSS) and the surrounding moat wall is considered, the instantaneous pounding is simulated using the Hertz-damp model, and a simplified mechanical model with two particles and four degrees of freedom is established. Dynamic equation is obtained using Hamilton principle; effects of SSI, initial gap, and friction coefficient on the pounding responses under the action of near-field pulse-like Chi-Chi earthquake and far-field Imperial Valley-06 earthquake are studied. The results show that SSI will amplify liquid sloshing height but that structural acceleration and impact force will be reduced because of SSI. The responses caused by Chi-Chi earthquake are far greater than those of Imperial Valley-06 earthquake. Initial gap has a small effect on liquid sloshing height; structural acceleration and impact force first increase as the initial gap increases and then begin to decrease; in the design of moat wall of sliding isolation LSS, a certain gap exists that will more adversely affect the pounding responses of structure. Liquid sloshing height is less affected by coefficient of friction, but structural acceleration and impact force decrease as friction coefficient increases in general.


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