Experimental and numerical studies of instability mechanism and load resistance of rhombic grid hyperboloid-latticed shells under vertical load

2018 ◽  
Vol 166 ◽  
pp. 167-186 ◽  
Author(s):  
Yan-Lin Guo ◽  
You-Hao Zhang ◽  
Bo-Li Zhu ◽  
Peng Zhou ◽  
Yong-Lin Pi
Keyword(s):  
Load Resistance ◽  
Vertical Load ◽  
Instability Mechanism ◽  
Numerical Studies

scholarly journals Comparative Study On Load Resistance of Eco-Friendly Interlocking Blocks For Sustainable Construction

2021 ◽  
Author(s):  
Venkata Veera Himakar Chunduri ◽  
Veerendrakumar C. Khed
Keyword(s):  
Compressive Strength ◽  
Environmental Sustainability ◽  
Load Resistance ◽  
Masonry Wall ◽  
Sustainable Construction ◽  
Bottom Surface ◽  
Brick Wall ◽  
Vertical Load ◽  
Block Wall ◽  
Wall Construction

Abstract The rapid growth of contemporary construction industry has driven engineers to explore new construction techniques for sustainable development. Interlocking block wall construction reduces time, labour and enhances construction efficiency compared to conventional masonry wall construction. The interlocking pattern has been applied to the top and bottom surface of block to withstand gravity and lateral loads whereas current interlocking blocks only serve the purpose of easy alignment. In this study, eco-friendly blocks have been developed with industrial waste such as fly ash, quarry dust and geopolymer as binder. Tests to evaluate the compressive strength, water absorption and efflorescence have been carried out on both traditional and geopolymer interlocking blocks. Later, on two blocks joint, in-plane vertical load has been applied and the same model is generated to validate the failure. Using numerical modelling, horizontal and vertical load resistance of interlocking block wall and traditional brick wall was compared. The experimental results show that, relative to traditional clay brick, the compressive strength of the geopolymer interlocking block was high but the absorption of water was low. The vertical load resistance is identical but horizontal load resistance was high in interlocking block wall. The interlocking geopolymer block was the best approach for environmental sustainability.

Theoretical and numerical studies of elastic buckling and load resistance of double cross-arm pre-tensioned cable stayed buckling-restrained braces

2017 ◽  
Vol 153 ◽  
pp. 674-699 ◽  
Author(s):  
Yan-Lin Guo ◽  
Peng Zhou ◽  
Mark Andrew Bradford ◽  
Yong-Lin Pi ◽  
Jing-Zhong Tong ◽  
...  
Keyword(s):  
Load Resistance ◽  
Elastic Buckling ◽  
Numerical Studies ◽  
Buckling Restrained Braces ◽  
Double Cross

scholarly journals INFLUENCE OF GEOMETRIC FORM OF PALE ON ITS RESISTANCE TO MGE

2021 ◽  
Vol 29 (2) ◽  
pp. 66-70
Author(s):  
A. Morgun ◽  
◽  
I. Matt ◽  
I. Shevchenko ◽  
◽  
...  
Keyword(s):  
Experimental Data ◽  
Bearing Capacity ◽  
Load Resistance ◽  
Geometric Form ◽  
Calculation Methods ◽  
Numerical Studies ◽  
Geological Conditions ◽  
Analysis Of Results ◽  
Cost Of Construction ◽  
Reliable Methods

Vinnytsia National Technical University The estimated cost of construction of foundations reaches about 40% of the total estimated cost of the building. In the industrial and civil construction of Ukraine due to its geological conditions it is advisable to use pyramidal piles and the peculiarities of their interaction with the foundations and theoretical calculation methods are insufficiently studied. The lack of reliable methods for estimating the bearing capacity of pyramidal piles leads to an increase in inventory ratios and imperfect decisions. Therefore, the topic of VAT research of rational pyramidal piles is relevant. Numerical studies on the IHE to determine the VAT and bearing capacity of pyramidal piles, which are characterized by load resistance with equal subsidence. Numerical studies of the pyramidal pile were performed on the numerical IHE. MGE - a modern numerical method for solving boundary value problems of structural mechanics, has attracted the attention of researchers mainly by the fact that the continuous environment is divided into a number of elements that can be considered as separate parts The analysis of results of numerical researches is carried out, the correlation with experimental data which are restrained by direct measurement of pressure in a soil basis by mezdoses is carried out.

Numerical Investigation of the Installation Process and the Bearing Capacity of Suction Bucket Foundations

2015 ◽  
Author(s):  
Marc Stapelfeldt ◽  
Julian Bubel ◽  
Jürgen Grabe
Keyword(s):  
Bearing Capacity ◽  
Design Procedure ◽  
Soil Conditions ◽  
Detailed Knowledge ◽  
Offshore Platforms ◽  
Vertical Load ◽  
Numerical Investigations ◽  
Numerical Studies ◽  
Parametric Studies ◽  
Bearing Behavior

This paper was developed in cooperation between the TUHH and Overdick GmbH & Co. KG. The goal of the presented work is gaining further knowledge about the installation and bearing behavior of suction bucket foundations for fixed offshore platforms based on sand. Buckets are usually made of steel and consist of a cylinder and a lid at the top. They are installed into the sea floor by pumping water out of the buckets to create suction, which drives the bucket into the soil. Suction buckets do not require heavy hammer-equipment for construction like common piles. Thus the installation procedure is much faster and protects the environment significantly by avoiding noise emissions. Therefore, suction buckets are to be considered as a serious foundation alternative compared to steel piles. For this paper numerical investigations are performed with the finite analyses software ABAQUS. A total of five finite element models — three for the bearing and two for the installation — were created to carry out parametric studies, while using a hypoplastic constitutive model to describe the soil conditions. Therefore, the buckets diameter, embedded depth and the pore-ratio are to be investigated. In addition three different load conditions are applied in the bearing capacity tests: the maximum vertical load, the maximum horizontal load and the minimum vertical load. During the simulation of the installation procedure different pore ratios are tested and it is attempted to simulate an installation by water-extraction. Based on these numerical investigations it is possible to investigate known and currently more or less unknown phenomena of the bearing and the installation of suction buckets. Thus, a more detailed knowledge about the function of this kind of foundation is to be gained. In addition, the numerical studies are compared to the design-procedure according to API RP-2A-WSD and the DNV CN-30.4.

Distribution of Stresses in Masonry Pillar with Fully Filled and Unfilled Perpend Joints

2016 ◽  
Vol 249 ◽  
pp. 160-165 ◽  
Author(s):  
Petr Bílý ◽  
Josef Fládr
Keyword(s):  
Compressive Strength ◽  
Czech Republic ◽  
Numerical Analysis ◽  
Shear Walls ◽  
Load Resistance ◽  
Masonry Structures ◽  
Vertical Load ◽  
Fem Model ◽  
The Czech Republic ◽  
Distribution Of Stresses

The paper summarizes the results of numerical analysis conducted with the aim to compare the distribution of stresses in masonry pillars constructed using different bricklaying techniques. The analysis was carried out in reaction to the discussion of members of Czech standardization committee TNK 37 – Masonry structures. Currently, most of masonry load-bearing structures in the Czech Republic are made from clay blocks without mortar in perpend joints. The analysis seeks the answer to the question whether it is possible, in case of the eccentrically loaded masonry pillars with unfilled perpend joints, to consider the value of design compressive strength calculated using the same approach as for pillars with filled perpend joints for the check of vertical load resistance. Supplementary comparison of the behavior of the pillars with filled and unfilled perpend joints loaded by lateral load in the plane of the pillar (corresponding to short shear walls) was also conducted. 2D FEM model created in ATENA Science software was exploited for the analysis. The results confirmed that the approaches contained in ČSN EN 1996-1-1 [1] are basically applicable for pillars with unfilled perpend joints.

Experimental and numerical studies of radiative shocks

2006 ◽  
Vol 133 ◽  
pp. 1013-1017 ◽  
Author(s):  
C. Michaut ◽  
L. Boireau ◽  
T. Vinci ◽  
S. Bouquet ◽  
M. Koenig ◽  
...  
Keyword(s):  
Radiative Shocks ◽  
Numerical Studies

Numerical Studies on Behavior of Lorentz-Force-Applied Boundary Layer in Supersonic Flow

2009 ◽  
Vol 129 (6) ◽  
pp. 831-839
Author(s):  
Keisuke Udagawa ◽  
Sadatake Tomioka ◽  
Hiroyuki Yamasaki
Keyword(s):  
Boundary Layer ◽  
Supersonic Flow ◽  
Lorentz Force ◽  
Numerical Studies
Sign in / Sign up

Export Citation Format

Share Document