http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Haach, Vladimir Guilherme (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Influence of High Column Axial Loads in Exterior R/C Beam-Column Joints
Vladimir Guilherme Haach,Ana Lucia Homce De Cresce El Debs,Mounir Khalil El Debs 대한토목학회 2014 KSCE JOURNAL OF CIVIL ENGINEERING Vol.18 No.2
Joints are problematic regions to study and to build because they generally present high steel ratio in reduced geometricaldimensions. Column axial load is one among several variables that influence the behavior of the exterior beam-column joints. Thispaper investigates the influence of the column axial load on the reinforced concrete exterior beam-column joints throughexperimental tests and compares the results with some theoretical methods of failure prediction. Three exterior beam-columnconnections, with the same geometrical properties are tested applying different levels of column axial loads. Then, an analysis ofreinforcement strains and cracking pattern of the joints is presented in an attempt to better explain the behavior of the exterior beamcolumnjoints. Design models are applied to the experimental specimens and their results are compared. The present study indicatesthat the column axial loads influence the failure mode and further research on this topic is necessary to ensure more accuracy of thedesign models in the prediction of the ultimate failure load of beam column joints.
-
Matheus F. A. Silva,Vladimir G. Haach 사단법인 한국계산역학회 2016 Computers and Concrete, An International Journal Vol.18 No.2
Exterior beam-column joints are structural elements that ensure connection between beams and columns. The joint strength is generally assumed to be governed by the structural element of lowest load capacity (beam or column), however, the joint may be the weakest link. The joint shear behavior is still not well understood due to the influence of several variables, such as geometry of the connection, stress level in the column, concrete strength and longitudinal beam reinforcement. A parametrical study based only on experiments would be impracticable and not necessarily exposes the failure mechanisms. This paper reports on a set of numerical simulations conducted in DIANA® software for the investigation of the shear strength of exterior joints. The geometry of the joints and stress level on the column are the variables evaluated. Results have led to empirical expressions that provide the shear strength of unreinforced exterior beamcolumn joints.
-
Numerical study of a new constructive sequence for movable scaffolding system (MSS) application
Teran, Jose Ramon Diaz de,Haach, Vladimir Guilherme,Turmo, Jose,Jorquera, Juan Jose Techno-Press 2016 Advances in concrete construction Vol.4 No.3
This paper consists in a study of a new contructive sequence of road viaducts with Movable Scaffolding System (MSS) using numerical tools based on finite element method (FEM). Traditional and new sequences are being used in Spain to build viaducts with MSS. The new sequence permits an easier construction of one span per week but implies some other issues related to the need of two prestressing stages per span. In order to improve the efficiency of the new sequence by reducing the number of prestressing stages per span, two solutions are suggested in this study. Results show that the best solution is to introduce the 100% of the prestressing force at the self-supporting core in order to improve the road viaduct construction with movable scaffolding system by reducing execution time without increasing economic costs.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
