scholarly journals COST MINIMIZATION OF REINFORCED CONCRETE PILE CAP USING OPTIMIZATION TECHNIQUES

2017 ◽  
Vol 4 (07) ◽  
Keyword(s):  
Reinforced Concrete ◽  
Cost Minimization ◽  
Optimization Techniques ◽  
Concrete Pile ◽  
Pile Cap

scholarly journals Research on the Design and Detailing of a Re-constructional High-rise uilding Structure Project Reconstruction

2014 ◽  
Vol 8 (1) ◽  
pp. 450-454 ◽  
Author(s):  
Ling Yuhong ◽  
Lin BiaoYi ◽  
Ke Yu ◽  
Chen QingJun
Keyword(s):  
Reinforced Concrete ◽  
Shear Wall ◽  
Wall Structure ◽  
Strip Foundation ◽  
Reinforced Concrete Frame ◽  
Engineering Structures ◽  
Concrete Frame ◽  
High Rise ◽  
Concrete Pile ◽  
Pile Cap

This paper introduced the reconstruction practice and detailing of a high-rise reinforced concrete frame-shear wall structure. To fully utilize the old structure and meet the requirement of the reconstructed structure, certain measures have been put forward. The enlarging of concrete pile cap and adding strip foundation-beam were used to support the new added shear wall. The reconstruction concept detailing of the roof of basement, the enlarging of the beam or column sections and the application of the inclined column are introduced. The whole structure analysis shows that the reconstructed structure is safe enough to meet all the requirement of the designing code and the settlement observation shows that the deformation of the whole structure in gravity is small. The paper shows the design and detailing of the reconstructed engineering is effective and will be valuable to the similar engineering structures.

scholarly journals MODELISASI ANALISIS NUMERIK GAYA LATERAL PADA ELEVATED REINFORCED CONCRETE PILE CAP PADA TANAH NON KOHESIF

2021 ◽  
Vol 5 (1) ◽  
pp. 111
Author(s):  
Alvin Lo ◽  
Hendy Wijaya ◽  
Amelia Yuwono
Keyword(s):  
Reinforced Concrete ◽  
Numerical Analysis ◽  
Sandy Soil ◽  
Pile Group ◽  
Lateral Force ◽  
Pile Groups ◽  
The Road ◽  
Concrete Pile ◽  
Earthquake Force ◽  
Pile Cap

Bridges are construction structures that are built to connect parts of the road that are cut off by obstacles such as deep valleys, irrigation channel paths. In order to build a bridge, a strong, economical and easy to build foundation is needed to carry gravity loads and also earthquake force. A common problem encountered in bridge foundation is the occurrence of erosion around the piles due to scouring of water which causes exposing some portion of the piles, which are often referred as elevated reinforced concrete pile-cap foundations. In this study, a numerical analysis of pile groups on elevated reinforced concrete pile-cap foundations is carried out with lateral forces on sandy soil to see the ductility behavior of piles using geotechnical-based programs and to compare the results with the previous studies. The analysis includes the pilecap model and the soil-to-pile interaction and also considers the pile group effect. The analysis was carried out to see the structural and geotechnical conditions on the ductility behavior of a partially embedded piles on sandy soil. The result obtained is a comparison of the ductility and overstrength values that can be used as a consideration in designing elevated reinforced concrete pile-cap foundations.Keywords: Elevated RC pile-cap foundations; numerical analysis; lateral force; ductility AbstrakJembatan adalah struktur konstruksi yang dibangun untuk menghubungkan bagian jalan yang terputus oleh rintangan-rintangan seperti lembah yang dalam, alur saluran irigasi. Untuk membangun sebuah jembatan, diperlukan fondasi yang kuat, ekonomis dan mudah untuk dibangun untuk memikul beban dari jembatan dan juga gaya gempa. Masalah yang umum ditemui pada konstruksi fondasi jembatan adalah terjadinya erosi pada sekitar fondasi dikarenakan gerusan air yang menyebabkan tanah terangkat dan memperlihatkan sebagian tiang fondasi, yang sering disebut dengan elevated reinforced concrete pile-cap foundations. Pada penelitian ini dilakukan analisis secara numerik terhadap kelompok tiang pada elevated reinforced concrete pile-cap foundations yang dibebani gaya lateral pada tanah berpasir untuk melihat perilaku daktilitas tiang dengan bantuan program berbasis geoteknik dan membandingkan dengan hasil penelitian terdahulu. Analisis menyertakan model kepala tiang dan hubungan antara tanah dengan tiang serta mempertimbangkan efek kelompok tiang. Analisis dilakukan untuk melihat kondisi struktural dan geoteknikal pada perilaku daktilitas fondasi yang ditanam sebagian pada tanah pasir. Hasil yang didapatkan adalah perbandingan nilai daktilitas dan overstrength yang dapat digunakan sebagai pertimbangan dalam mendesain elevated reinforced concrete pile-cap foundations.

Failure Probabilities of Reinforced Concrete Square Pile Caps

2007 ◽  
Vol 23 (2) ◽  
pp. 173-180
Author(s):  
W.-Y. Lu
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Design Method ◽  
Main Body ◽  
Concrete Pile ◽  
Diagonal Compression ◽  
Pile Cap ◽  
Pile Caps ◽  
Strut And Tie Model ◽  
Failure Probabilities

AbstractAn analytical model for determining the shear strength of concrete pile caps under the failure mode of diagonal-compression originally based on the softened strut-and-tie model is proposed. The failure probabilities of reinforced concrete pile caps are investigated by Monte Carlo method. The results indicate that the proposed model can accurately predict the shear strength of the pile caps. The distribution of the failure probabilities for pile caps designed to ACI 318-02 Appendix A and the proposed design method are more uniform than that designed to the ACI 318-99. The ACI 318-99 is very conservative and cannot provide a consistent safety for pile caps design. It is suggested that the procedures in the ACI 318-02 Appendix A should be moved to the main body of ACI 318-02 and the proposed design method should be incorporated into the current reinforced concrete pile cap design methods.

scholarly journals Analysis of nodal stress on reinforced concrete two-pile caps supported on steel piles

2020 ◽  
Vol 13 (6) ◽  
Author(s):  
Rodrigo Gustavo Delalibera ◽  
Marco Aurélio Tomaz ◽  
Vitor Freitas Gonçalves ◽  
José Samuel Giongo
Keyword(s):  
Reinforced Concrete ◽  
Structural Behavior ◽  
Concrete Piles ◽  
Strut And Tie ◽  
Concrete Pile ◽  
Steel Piles ◽  
Pile Cap ◽  
Pile Caps ◽  
Embedment Length ◽  
Strut And Tie Model

abstract: Reinforced concrete pile caps may be designed trough plastic models (strut and tie model) or models based on bending theory. The formulae available for verifying the stress is based on caps supported on concrete piles, with few studies about the stress distribution on caps supported on steel piles. To analyze the structural behavior of caps supported on steel piles, as well as the stress on the superior and inferior nodal zones, four two-pile caps supported on steel piles were tested. The variables were the embedment length and in one of the specimens a steel plate was welded on top of both piles. It was observed that the embedment length has substantial influence on pile cap structural behavior. It was concluded that, to verify the stress on inferior nodal zone of the cap, aside from pile area, an area of concrete confined between the flaps of the pile must be considered.

scholarly journals Finite Element Analysis of Reinforced Concrete Pile Cap using ATENA

2021 ◽  
Vol 18 (2) ◽  
Author(s):  
Preeda Chaimahawan ◽  
Suniti Suparp ◽  
Panuwat Joyklad ◽  
Qudeer Hussain
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Element Analysis ◽  
Concrete Pile ◽  
Pile Cap

scholarly journals Evaluation of early-age performance of reinforced concrete pile cap

Mechanika ◽  
2017 ◽  
Vol 23 (3) ◽  
Author(s):  
Petr ŠTEMBERK ◽  
Michaela FRANTOVA ◽  
Martin PETRIK
Keyword(s):  
Reinforced Concrete ◽  
Early Age ◽  
Concrete Pile ◽  
Pile Cap

scholarly journals Analytical and Experimental Study of the Piles Cap Normal and Light Weight Aerated Concrete: Literature Review

2021 ◽  
Vol 27 (10) ◽  
pp. 86-105
Author(s):  
Noor Ali Hussien ◽  
Mohammed Mosleh Salman ◽  
Husain Khalaf Jarallah
Keyword(s):  
Reinforced Concrete ◽  
Shear Capacity ◽  
Shear Mode ◽  
Factors Affecting ◽  
Concrete Pile ◽  
Pile Cap ◽  
Pile Caps ◽  
Design Documents ◽  
The Many ◽  
And Behavior

The main objective of this study is to understand the work of the pile caps made of lightweight aerated foam concrete and study the many factors affecting the ability and the capacity of the shear. The study was done by analyzing previous practical and theoretical experiences on the reinforced concrete pile caps. The previous practical results indicated that all specimens failed by shear diagonal compression or tension modes except one specimen that failed flexural-shear mode. Based on test specimens' practical results and behavior, some theoretical methods for estimating the ultimate strength of reinforced concrete pile caps have been recommended, some of which evolved into the design documents available on the subject. A theoretical and practical study of compression concluded that the shear capacity is limited by the nodal zone bearing stresses. The flexural capacity can be described by the column load that would cause the yielding of the tie (i.e., steel reinforcement). Therefore, the design of pile caps should include a check on bearing strength to be added to the traditional section force approach for pile cap design.

Study on Mechanical Performance of Deep Pile Cap Failure

2015 ◽  
Vol 730 ◽  
pp. 39-42
Author(s):  
Hong Lei Guo
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Failure Mechanism ◽  
Mechanical Performance ◽  
Load Bearing Capacity ◽  
Truss Model ◽  
Concrete Pile ◽  
Pile Cap ◽  
Complete Procedure ◽  
Pile Caps

This paper presents the test of 3 reinforced concrete pile caps and the complete procedure of failure as well as the stressed mechanism, including the description of the occurrence of cracks. The influences of reinforcement types on load-bearing capacity are also probed. A spatial truss model is put forward and can explain satisfactorily some phenomena observed in the test and the failure mechanism is investigated.

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