Test performed at Structural Engineering laboratory at Reykjavik University (www.ru.is/sel).
The shear force displayed is the point load (the force from the jack divided by two).
Abstract of the thesis
Shear failures in concrete structures are very hazardous. These failures can rarely be predicted and often happen explosively. For decades, tests have been done to study this phenomenon, in order to try to solve the riddle that shear is. Researchers have become more knowledgeable about shear and what the most important influences are. However, Eurocode’s shear equation formula (without shear reinforcement) is based on semi-empirical procedures.
My experiment involved testing concrete beams of variable height and consequently variable a/d ratio and comparing the test results to three building codes; ACI 318-08, ENV 1992-1-1:1991 and EC-2:2004.
I was also interested in studying shear and its most important influences.
Six series of beams were cast, three of each series, a total of eighteen beams. They were reinforced in the tensile area but not for shear. The variables were two; beams of different height (105mm – 335mm) and reinforcing steel percentage (1.31% – 1.55%).
My findings were that the ACI 318-08 code gives a very conservative conclusion. The Eurocode valid today (EC-2:2004) gives a safe estimation when compared to failure of the beam. The code also predicts the first shear crack for the beams except the deepest ones. When the formula is applied with the partial safety factor (γc) it becomes very safe. The ENV 1992-1-1:1991 code which is the predecessor to today’s code does not give good enough results and over estimates the shear resistance in some instances, if not calculated with the partial safety factor.
The thesis and more detailed information about the test can be found at www.ru.is/sel
Ty ren/Thanh ren- Thread rod mạ điện; Ty ren /Ty treo/ Thanh ren/Ty răng mạ kẽm nhúng nóng M6, M8, M10, M12, M16, M20- TCVN 197:2002/JIS B 1051 /DIN 975/DIN 976 (High quality Thread rod), Khớp nối ty ren (Thread rod coupling), Bịt đầu ty (Plastic end cap for thread rod), Tắc kê đạn (Drop in Anchor), Tắc kê tường (Anchor Bolts), Tắc kê chuồn (Heavy duty concrete Insert) mua bán thanh ren/ty ren mạ kẽm nhúng nóng, cở sở sản xuất thanh ren – ty ren mạ điện, báo giá thanh ren, thanh ren giá rẻ, địa chỉ bán thanh ren, thanh ren suốt, thanh ren mạ kẽm, báo giá thanh ren
TY REN M10- M12, , Ống thép luồn dây điện-ống ruột gà luồn dây điện lõi thép, Máng cáp dạng lưới, Unistrut 41 x 41
Quý khách vui lòng liên hệ:
CÔNG TY TNHH THIẾT BỊ ĐIỆN CÔNG NGHIỆP CÁT VẠN LỢI
Website: https://catvanloi.com – https://vattudien.vn – www.tytreocuongluccao.com
www.tyrenthep.net
504 Lê Quang Định, P.1, Quận Gò Vấp, TP Hồ Chí Minh
Tel: (08) 3588 6496 / 2246 4699 – www.tyrensuot.com-www.tyrensuot.net
Tư Vấn Và Giải Đáp Về Sản Phẩm CVL® Xin Vui Lòng Liên Hệ: 1900 5555 49.
Email: baogia@catvanloi.com – sales@catvanloi.com – projectsales@catvanloi.com