scholarly journals BEHAVIOR OF SPIRALLY CONFINED LAP SPLICE FOR PRECAST CONCRETE STRUCTURAL WALLS UNDER TENSION

1997 ◽  
Vol 62 (497) ◽  
pp. 157-165 ◽  
Author(s):  
jose Caringal ADAJAR ◽  
Hiroshi IMAI
Keyword(s):  
Precast Concrete ◽  
Structural Walls ◽  
Lap Splice

Analytical modelling of large panel coupled walls for seismic loading

1988 ◽  
Vol 15 (4) ◽  
pp. 623-632 ◽  
Author(s):  
M. Reza Kianoush ◽  
Andrew Scanlon
Keyword(s):  
Earthquake Engineering ◽  
Structural Parameters ◽  
Precast Concrete ◽  
General Purpose ◽  
Coupling Beams ◽  
Structural Walls ◽  
Analytical Results ◽  
Coupled Walls ◽  
Large Panel ◽  
Modelling Techniques

Modelling techniques for analysis of large panel wall systems with coupling beams, subjected to earthquake loading, are described. The models, implemented in an existing general purpose computer program, are evaluated through a series of analyses involving comparisons with other reported analytical results and with limited available experimental data. The sensitivity of analytical results to assumed structural parameters is highlighted. Key words: beams, earthquake engineering, finite element method, joints, precast concrete, seismic, structural analysis, structural walls.

scholarly journals Grouting Defect Detection of Lapped Bar Connections Based on Impact-Echo Method

2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Yun-Lin Liu ◽  
Jing-Jing Shi ◽  
Jun-Qi Huang ◽  
Guang-Shuo Wei ◽  
Zhi-Xin Wu
Keyword(s):  
Frequency Response ◽  
Defect Detection ◽  
Precast Concrete ◽  
Amplitude Spectrum ◽  
Fe Model ◽  
Impact Echo ◽  
Lap Splice ◽  
Good Potential ◽  
The Impact ◽  
Impact Echo Method

Grouted lap-splice connections are widely used for connecting precast concrete components. Grouting defects in the connections significantly influence the structural performance of the whole connection, which leads to the need for grouting defect detection. In this study, the impact-echo (IE) method was used for detecting defects in grouted lap-splice connections. Grouted connections with different levels of artificial grout defects were prepared in a shear wall, and the IE method was used to measure the frequency response. In addition, finite element (FE) analysis based on ABAQUS was conducted to simulate the tests. Based on the validated FE model, a parametric study was conducted to investigate the effect of the depth of the grout hole on the amplitude spectrum. The results indicated that (1) the IE method offered a good potential for grouting defect detection in grouted lap-splice connections; (2) the proposed FE model could well predict the frequency response of the grouting hole; and (3) the measured frequency and amplitude of the grouting hole in an impact-echo test would be considerably influenced by the hole depth.

Seismic performance of precast concrete column-to-column lap-splice connections

2018 ◽  
Vol 172 ◽  
pp. 687-699 ◽  
Author(s):  
José F. Rave-Arango ◽  
Carlos A. Blandón ◽  
José I. Restrepo ◽  
Fabio Carmona
Keyword(s):  
Seismic Performance ◽  
Precast Concrete ◽  
Concrete Column ◽  
Lap Splice

Structural integrity of precast concrete modular construction

PCI Journal ◽  
2021 ◽  
Vol 66 (2) ◽  
pp. 58-70
Author(s):  
Jeff M. Wenke ◽  
Charles W. Dolan
Keyword(s):  
Prestressed Concrete ◽  
Structural Integrity ◽  
Precast Concrete ◽  
Building Code ◽  
Modular Construction ◽  
Structural Concrete ◽  
Partial Removal ◽  
Structural Walls ◽  
Construction Methods ◽  
General Services Administration

The American Concrete Institute’s (ACI’s) Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19) contains structural integrity provisions for precast concrete panel buildings but does not address the structural integrity of precast concrete modules. ACI 318 requires spaced steel ties in all directions to tie the precast concrete panel elements together. These criteria are impractical for precast concrete modules due to the construction methods and the overall rigidity of each module. Precast concrete modules are inherently stable, even when subjected to General Services Administration criteria for partial removal of structural walls or corners, which require that if a portion of a wall or an entire module is removed, the remaining portions must have sufficient capacity to carry the resulting gravity loads. This paper examines the stress increases due to partial wall removal and the possibility of total module removal. It discusses strength reserves, provides recommendations for future editions of ACI 318 and the PCI Design Handbook: Precast and Prestressed Concrete, and presents conceptual connections that provide the continuity and ductility needed to maintain structural integrity following total module removal.

scholarly journals A METHOD TO EVALUATE THE SHEAR STRENGTH OF MULTI-STORY PRECAST CONCRETE STRUCTURAL WALLS

2001 ◽  
Vol 66 (541) ◽  
pp. 155-162
Author(s):  
Toshio MATSUMOTO ◽  
Hiroshi NISHIHARA ◽  
Masato FURUTANI ◽  
Tomoyoshi TAKEDA ◽  
Hiroshi IMAI
Keyword(s):  
Shear Strength ◽  
Precast Concrete ◽  
Structural Walls

Clay Product-Faced Precast Concrete Panels

PCI Journal ◽  
1994 ◽  
Vol 39 (1) ◽  
pp. 20-36 ◽  
Author(s):  
Sidney Freedman
Keyword(s):  
Precast Concrete ◽  
Concrete Panels
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