scholarly journals The Mechanical Behavior of Grouted Sleeve Splice Connections with and without Mechanical Interlocking Ring Under Axial Tensile Load

2019 ◽  
Vol 9 (2) ◽  
pp. 467-476
Author(s):  
Abdallh M. Soliman ◽  
◽  
Hatem H. Ibrahim ◽  
Hossam A. Hodhod ◽  
◽  
...  
Keyword(s):  
Bond Strength ◽  
Mechanical Behavior ◽  
Research Work ◽  
Tensile Load ◽  
Confining Pressure ◽  
Basic Material ◽  
Bond Behavior ◽  
Axial Tensile ◽  
Steel Sleeve ◽  
Sleeve Wall

This research work thus presents rational procedure to design a grouted sleeve splice connection using a basic material such as standard pipes with little workmanship this provides the design with a good advantage in comparison to just using selection tables for costly proprietary similar connection. The mechanical behavior of such splices is a function of two important mechanisms: the bar-to-grout bond behavior and the sleeve-to-grout bond behavior. To accomplish the goal of this examination work, three arrangements with an all-out number of 66 grouted splice sleeve specimens were fabricated and tested under incremental axial tensile load. The specimens were preliminary designed according to the equations available in the literature to determine the initial sleeve dimensions. Different parameters have been examined, namely: grout compressive strength, bar embedded length, bar diameter, sleeve inner diameter, sleeve wall thickness and sleeve configuration. The examined parameters provide to have a significant impact on the mechanical behavior of the grouted splices. Considering the results, it was clear that steel bars with 18 mm, 25 mm and 32 mm diameter and 044 Mpa yield stress can be adequately spliced and the tensile strength can be reached. The steel sleeve to the grouted splice sleeve connectors significantly improve the bar-to-grout bond strength through the confinement action added by the sleeve wall. Also welding interlocking steel rings can prevent the grout-to-sleeve bond Failure. Feasibility study for tested grouted sleeves reporting their adequacy in accordance with the code provisions of ACI 318-14[1] and ECP 203-2018[5] is presented. Moreover, design equations capturing the parameters affecting the bond strength, the confining pressure, and the required embedment length are derived.

scholarly journals The Mechanical Behavior of Grouted Sleeve Splice Connections with and without Mechanical Interlocking Ring Under Axial Tensile Load

2019 ◽  
Vol 9 (2) ◽  
pp. 467-476
Keyword(s):  
Bond Strength ◽  
Mechanical Behavior ◽  
Research Work ◽  
Tensile Load ◽  
Confining Pressure ◽  
Basic Material ◽  
Bond Behavior ◽  
Axial Tensile ◽  
Steel Sleeve ◽  
Sleeve Wall

This research work thus presents rational procedure to design a grouted sleeve splice connection using a basic material such as standard pipes with little workmanship this provides the design with a good advantage in comparison to just using selection tables for costly proprietary similar connection. The mechanical behavior of such splices is a function of two important mechanisms: the bar-to-grout bond behavior and the sleeve-to-grout bond behavior. To accomplish the goal of this examination work, three arrangements with an all-out number of 66 grouted splice sleeve specimens were fabricated and tested under incremental axial tensile load. The specimens were preliminary designed according to the equations available in the literature to determine the initial sleeve dimensions. Different parameters have been examined, namely: grout compressive strength, bar embedded length, bar diameter, sleeve inner diameter, sleeve wall thickness and sleeve configuration. The examined parameters provide to have a significant impact on the mechanical behavior of the grouted splices. Considering the results, it was clear that steel bars with 18 mm, 25 mm and 32 mm diameter and 044 Mpa yield stress can be adequately spliced and the tensile strength can be reached. The steel sleeve to the grouted splice sleeve connectors significantly improve the bar-to-grout bond strength through the confinement action added by the sleeve wall. Also welding interlocking steel rings can prevent the grout-to-sleeve bond Failure. Feasibility study for tested grouted sleeves reporting their adequacy in accordance with the code provisions of ACI 318-14[1] and ECP 203-2018[5] is presented. Moreover, design equations capturing the parameters affecting the bond strength, the confining pressure, and the required embedment length are derived.

scholarly journals Experimental and Analytical Study of Grouted Sleeve Splice Under Axial Tensile Load

2020 ◽  
Vol 10 (1) ◽  
pp. 309-320
Keyword(s):  
Finite Element ◽  
Numerical Models ◽  
Precast Concrete ◽  
Research Work ◽  
Concrete Structures ◽  
Tensile Load ◽  
Cost Models ◽  
Labor Costs ◽  
Bond Behavior ◽  
Axial Tensile

Paper Compared to traditional cast-in-place concrete structures, the precast Concrete structures are usually constructed in a controlled environment , i.e. plants, and then assembled through certain links at the construction site. The concrete precast concrete structures can therefore have better concrete quality and help to reduce labor costs and increase construction speed. Because of these advantages, in recent years the precast concrete structures have received much attention. This research work therefore presents a reasonable procedure for designing a grouted sleeve splice connection using a simple material such as standard pipes with little workmanship which gives the design a good advantage compared to just using selection tables for expensive proprietary similar connection. Such splices' mechanical behavior is a function of two essential mechanisms: bar-to-grout bond behavior, and sleeve-to-grout bond behavior. To achieve the purpose of this analysis work , three arrangements were manufactured and checked under incremental axial tensile load with an all-out number of 66 grouted splice sleeve specimens. While experimental methods of investigation are extremely useful in obtaining information about the grouted splice sleeve connection behavior, the use of numerical models helps to develop good comprehension of behavior at lower cost. Models of non-linear finite-element analysis for grouted splice sleeve connection were presented in this research. The research utilized the commercial Finite Element modeling software (ANSYS) to study the effects of some parameters that are important in the bond behavior of the grouted splice sleeve connection and compare the analytical results with the experimental results to confirm the analytical model. The average efficiency of the finite element models using ANSYS was 92.5%. Having the finite element model validated, a parametric study was performed using ANSYS to evaluate the effect of the following parameters on the behavior of grouted splice sleeve: bar diameter, embedded length, grout compressive strength, sleeve wall thickness, and sleeve inner diameter

scholarly journals Structural Performance of Grouted Sleeve Splice Connectors with Grooves Under Axial Tensile Load for Precast Concrete Structure

2020 ◽  
Vol 9 (4) ◽  
pp. 564-571
Keyword(s):  
Mild Steel ◽  
Failure Modes ◽  
Precast Concrete ◽  
Tensile Load ◽  
Confining Pressure ◽  
Steel Pipe ◽  
Modes Of Failure ◽  
Axial Tensile ◽  
Embedment Length ◽  
And Control

This study explains the performance of the proposed grouted sleeve connector with internal Grooves within the sleeve beneath incremental tensile load until failure. In this study, a series of twelve grouted sleeve splice with grooves (GSSG) were tested experimentally beneath incremental tensile load until failure to determine their feasibilities. The connector utilized mild steel pipe as sleeve where the sleeve comprises internal grooves with differing height and width .The mild steel pipe and the grooves are utilized to confine and strengthen the grout and the two dis continued bars joined end-to-end configuration within the sleeve. The specimens are studied and evaluated based on two major aspects; (a) ultimate tensile capacities, whether it is higher than 125% of the specified yield strength, (b) failure modes, The test shows up that, there are two modes of failure which were bar to grout failure and bar broken outside the sleeve. Sex examples out of twelve shows up palatable comes about since it failed due to bar broken outside the sleeve and fulfill palatable ultimate tensile capacity. The stiffness and the ductility of the connectors additionally fulfill. It is found that the grooves on the sleeves are essential to interlock with the confined grout, resisting it from slipping out of the sleeve. The test appears that the performance of the grouted sleeve connector with grooves was represented by grout-bar bond, anchorage length and control action given by the sleeve and the grooves . Possibility consider for tried grouted sleeves detailing their adequacy in agreement with the code arrangements of ACI 318-14 and ECP 203-2018 is displayed. Besides, design equations capturing the parameters influencing the bond strength, the confining pressure, grooves , and the specified embedment length are determined.

Assessment of Inherent Anisotropy and Confining Pressure Influences on Mechanical Behavior of Anisotropic Foliated Rocks Under Triaxial Compression

2015 ◽  
Vol 49 (6) ◽  
pp. 2155-2163 ◽  
Author(s):  
Davood Fereidooni ◽  
Gholam Reza Khanlari ◽  
Mojtaba Heidari ◽  
Ali Asghar Sepahigero ◽  
Amir Pirooz Kolahi-Azar
Keyword(s):  
Mechanical Behavior ◽  
Triaxial Compression ◽  
Confining Pressure ◽  
Inherent Anisotropy

SEM in situ study on the mechanical behaviour of SiCf/Ti composite subjected to axial tensile load

2011 ◽  
Vol 528 (13-14) ◽  
pp. 4507-4515 ◽  
Author(s):  
Kashif Naseem ◽  
Yanqing Yang ◽  
Xian Luo ◽  
Bin Huang ◽  
Guanghai Feng
Keyword(s):  
Mechanical Behaviour ◽  
Tensile Load ◽  
In Situ Study ◽  
Axial Tensile

Analysis of Premium Connection of Connecting and Sealing Ability Loaded by Axial Tensile Loads

2012 ◽  
Vol 268-270 ◽  
pp. 737-740
Author(s):  
Yang Yu ◽  
Yi Hua Dou ◽  
Fu Xiang Zhang ◽  
Xiang Tong Yang
Keyword(s):  
Finite Element ◽  
Contact Pressure ◽  
Tensile Load ◽  
Element Model ◽  
Sealing Ability ◽  
Axial Tensile ◽  
High Level ◽  
Maximum Contact ◽  
Contact Pressures ◽  
The Finite Element Model

It is necessary to know the connecting and sealing ability of premium connection for appropriate choices of different working conditions. By finite element method, the finite element model of premium connection is established and the stresses of seal section, shoulder zone and thread surface of tubing by axial tensile loads are analyzed. The results show that shoulder zone is subject to most axial stresses at made-up state, which will make distribution of stresses on thread reasonable. With the increase of axial tensile loads, stresses of thread on both ends increase and on seal section and shoulder zone slightly change. The maximum stress on some thread exceed the yield limit of material when axial tensile loads exceed 400KN. Limited axial tensile loads sharply influence the contact pressures on shoulder zone while slightly on seal section. Although the maximum contact pressure on shoulder zone drop to 0 when the axial tensile load is 600KN, the maximum contact pressure on seal section will keep on a high level.

scholarly journals Investigating the Effect of Interface Morphology in Adhesively Bonded Composite Wavy-Lap Joints

2021 ◽  
Vol 5 (1) ◽  
pp. 32
Author(s):  
Roya Akrami ◽  
Shahwaiz Anjum ◽  
Sakineh Fotouhi ◽  
Joel Boaretto ◽  
Felipe Vannucchi de Camargo ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Composite Structures ◽  
Failure Modes ◽  
Mechanical Performance ◽  
Tensile Load ◽  
Lap Joints ◽  
Load Level ◽  
Displacement Curve ◽  
Interface Morphology ◽  
Angle Variation

Joints and interfaces are one of the key aspects of the design and production of composite structures. This paper investigates the effect of adhesive–adherend interface morphology on the mechanical behavior of wavy-lap joints with the aim to improve the mechanical performance. Intentional deviation from a flat joint plane was introduced in different bond angles (0°, 60°, 90° and 120°) and the joints were subjected to a quasi-static tensile load. Comparisons were made regarding the mechanical behavior of the conventional flat joint and the wavy joints. The visible failure modes that occurred within each of the joint configurations was also highlighted and explained. Load vs. displacement graphs were produced and compared, as well as the failure modes discussed both visually and qualitatively. It was observed that distinct interface morphologies result in variation in the load–displacement curve and damage types. The wavy-lap joints experience a considerably higher displacement due to the additional bending in the joint area, and the initial damage starts occurring at a higher displacement. However, the load level had its maximum value for the single-lap joints. Our findings provide insight for the development of different interface morphology angle variation to optimize the joints behavior, which is widely observed in some biological systems to improve their performance.

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