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development and testing of precast concretefilled square

development and testing of precast concretefilled square

Development and testing of precast concrete-filled square ...

Apr 19, 2021  This paper presents a novel precast concrete-filled square steel tube (CFSST) column-to-RC beam connection with energy dissipating (ED) bolts and prestressing tendons. In total, eight precast specimens with different axial compression ratios, ED bolt diameters, steel tube thicknesses, and beam end arrangement were tested under cyclic loading.

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Development and testing of precast concrete-filled square ...

The precast CFSST column has good integrity and less damage after the earthquake. The final failure modes of the fabricated connections are governed by the plastic hinges at the beam. Besides, a calculation method for the flexural bearing capacity of the novel joint is developed and compared with the test results, which verified the feasibility ...

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Development and testing of precast concrete beam-to-column ...

Nov 01, 2013  Development and testing of precast concrete beam-to-column connections ... investigated the seismic behaviour of beam to concrete filled steel square or hollow square

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(PDF) Development and testing of hybrid precast concrete ...

To promote the development of precast RLC structures, this study tested a new type of connection for precast concrete columns: connecting the upper and the lower halves of columns with bent ...

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Development and testing of hybrid precast steel-reinforced ...

May 15, 2020  The square steel tube was designed to resist compression in the vertical direction and shear deformation in the horizontal direction. A joint cover plate and a stiffener plate of the joint module were used to connect it with prefabricated steel reinforced concrete column and steel beam. ... Development and testing of precast concrete beam-to ...

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Development and testing of precast concrete beam-to-column ...

Development and testing of precast concrete beam-to-column connections ... investigated the seismic behaviour of beam to concrete filled steel square or hollow square steel column joints with ...

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Development and testing of hybrid precast concrete beam-to ...

Oct 01, 2017  Based on the test results and damage condition, the initial design of the joint was improved. Consequently, a new joint was constructed and tested, which exhibited a better performance. Precast concrete connections showed stable load–displacement cycles and dissipated a higher energy. The structural drift obtained was up to 9.0%.

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Shear capacity of hollow-core slabs with concrete-filled cores

ing and testing both ends of eight hollow-core slab specimens. Of the eight specimens, one served as a control specimen, or baseline, for the testing program, and the cores remained un-filled. The remaining seven specimens were modified by adding concrete filling to

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Different Design Parameters Analysis of Unbonded Precast ...

This thesis studies deeply the crack development characteristics, failure pattern, hysteresis curve and the displacement ductility of unbonded precast reinforced concrete frame, by analyzing one unbonded precast reinforced concrete frame under low reversed cyclic load test. We build a model using finite element analysis software to the test piece model analysis, the analysis result agree well ...

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Performance Evaluation of Semi Precast Concrete Beam ...

Nov 07, 2016  In this study, a new precast concrete (PC) beam-column joint of moment resisting frame applicable for moderate seismic regions is proposed. A semi PC beam-column connection with U-shaped strands is developed in an attempt to improve workability

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Cyclic Loading Test for Cast-in-Place Concrete-Filled ...

Test results revealed that the concrete-filled precast high-strength concrete centrifugal tube column exhibited good integral behavior, and the failure modes of all columns were ductile flexural ...

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low pressure air Testing of sewers - Concrete Pipe

use of low-pressure air test. air Tes T DevelopmenT The low-pressure air test was developed to de-tect damaged pipe or improper jointing and is a test to determine the rate at which air, under pressure, escapes from an isolated section of sewer. Initially water testing, the air rest is now a common method of testing installed sewer lines for ...

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大连理工大学主页平台管理系统 李冬生--中文主页--科学研究

张月.Development and testing of precast concrete-filled square steel tube column-to-RC beam connections under cyclic loading[J],Construction and Building Materials,2021,280 (2021) 122540:1-16 申伟.Modeling dispersive waves in cracked rods using the wavelet-based higher-order rod elements[J],International Journal of Mechanical Sciences,2021 ...

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Analytical and numerical investigation of “dry” jointed ...

Request PDF Analytical and numerical investigation of “dry” jointed precast concrete frame sub-assemblies with steel angle and tube connections This paper presents development of an ...

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Energy dissipation and resilience of precast segmented ...

In particular, the nonlinear behavior and seismic performance of novel precast columns is rarely investigated. In this study, a precast self-centering segmented concrete-filled steel-tube (PSCFST) column member is proposed. Pseudo-static tests were conducted on the model for

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Seismic behaviour of concrete-filled steel tubular column ...

Oct 01, 2020  The test measurements were performed as follows: (1) a horizontal load was applied to the specimen and its corresponding displacement was measured; (2) slip between the connection zone concrete and the CFST column, and between the connection zone concrete and precast shear wall were measured; (3) investigation of the crack development and ...

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A study on the seismic performance of concrete-filled ...

Each test specimen modeled the interior joint of a moment resisting frame consisting of square concrete filled steel tube columns and wide flange steel girders, where energy dissipation. was ...

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Seismic Performance of Hybrid Columns of Concrete-Filled ...

An experimental program that investigated the seismic performance of concrete-filled square steel tube with fiber-reinforced polymer (FRP)-confined concrete core (FCCC) column (SCFC) was conducted.

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Experimental study of a novel precast prestressed ...

Abstract Precast reinforced concrete (r.c.) structures can provide important advantages over their cast-in-place counterpart. However, lessons learned by past earthquakes evidence that beam-to-column joints may be a critical point of these structure and can undermine the seismic performance if not properly conceived. This paper presents a novel prestressed precast r.c. beam-to-column joint.

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Development and testing of hybrid precast steel-reinforced ...

Development and testing of precast concrete beam-to-column connections. Article. Nov 2013 ... Marc to study the mechanical performance of the square concrete-filled steel tubular column ...

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Development of a precast concrete barrier wall system for ...

precast concrete is a potential solution. Precast concrete ... Development of a precast concrete barrier wall system for bridge decks Gaurang Patel, Khaled Sennah, Hossein Azimi, Clifford Lam, ... deck systems are subject to static load testing to collapse to qualify the barrier-deck anchorage in lieu of crash testing.

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Concrete-Filled FRP Tubes: Manufacture and Testing of New ...

May 30, 2012  This paper reports on the development and testing of three new concrete-filled fiber-reinforced polymer (FRP) tube (CFFT) systems. These CFFT systems were designed to enhance the effectiveness of square and rectangular FRP tubes in confining concrete.

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Development and Analysis of Prefabricated Concrete ...

May 01, 2020  Development of Prefabricated Concrete Buildings in Chengdu. The area of Chengdu is 14,600 square kilometers, the resident population is more than 16 million, and the urbanization rate is 70.6%. It is in the stage of accelerating urbanization. The growth trend of urbanization rate in Chengdu is shown in Figure 1.

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Development and Seismic Evaluation of Pier Systems w ...

This study consisted of three parts, experimental studies, analytical studies, and design method development. The experimental studies involved shake table testing of a 0.33-scale model of a square column and a two-column bent. For the first time, unbonded CFRP tendons and UHPC were incorporated in design of a precast square column.

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Different Design Parameters Analysis of Unbonded Precast ...

This thesis studies deeply the crack development characteristics, failure pattern, hysteresis curve and the displacement ductility of unbonded precast reinforced concrete frame, by analyzing one unbonded precast reinforced concrete frame under low reversed cyclic load test. We build a model using finite element analysis software to the test piece model analysis, the analysis result agree well ...

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SECTION 03410 PRECAST CONCRETE STRUCTURES GENERAL

1. Manholes and Valve Vaults: Four (4) concrete test cylinders shall be taken for every 50 cubic yards (cu. yds) for each type of precast structure. 2. Pump Stations: Four (4) concrete test cylinders shall be taken for each pump station wet well. Four (4) concrete test cylinders shall be taken for each pump station's top and bottom slabs. 3.

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Post-tensioned splice system for precast, prestressed ...

• Part 1 covers the conceptual design and development of the splicing system. • Part 2 includes capacity verification through laboratory and full-scale testing. A precast concrete pile welded-end-plate system devel-oped in Malaysia is another innovative pile design that uses prestressing bars—instead of strands—that extend

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Precast Concrete Connections With Embedded Steel Members

years in precast concrete con-struction. Fig. 1 illustrates the ap-plication of embedded structural members in a beam-column con-nection and in a precast panel connection. The advantages of these types of connections are listed below: (a) In contrast to corbel and headed stud precast connections, the strength of connections with

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Performance Evaluation of Semi Precast Concrete Beam ...

The presence of prestressing tendons limited the development of cracks in the precast beams. The concrete strength of the keyway area had little effect on the seismic performance of the precast ...

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Professor Dennis Lam, Professor of Structural Engineering ...

Aug 27, 2021  Biography. Professor Dennis Lam is the Chair in Structural Engineering and the Director of Bradford Centre for Sustainable Environments. He is a Chartered Engineer, Fellow of the Institution of Structural Engineers and a Member of the Institution of Civil Engineers.

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The development and experimental test of a new pore ...

Sep 04, 2015  10%  Pore-forming grouted connection characterized with great economic superiorities and application potentials has weaker mechanical properties comparing to the steel sleeve grouted connector. To improve the mechanical properties of pore-forming grouted connector, the NPGCS was generated using welded closure confinement steels in buckle configuration. Experimental tests

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In-Plane Cyclic Testing of Concrete-Filled Sandwich Steel ...

In-Plane Cyclic Testing of Concrete-Filled Sandwich Steel Panel Walls with and without Boundary Elements Yasser Alzeni, M.ASCE1; and Michel Bruneau, F.ASCE2 Abstract: Concrete-filled sandwich steel panel (CFSSP) walls are composed of two steel skin plates interconnected by tie bars, with the space between the skin plates filled with concrete.

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Self-Consolidating Concrete: A Synthesis of Research ...

using SCC for a few years, and will likely want to use it for precast/prestressed girders in the near future. As part of a research project, two prototype 45-inch deep, 60-ft long test beams were cast with SCC and tested to failure at Federal Highway Administration’s (FHWA’s) Turner

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