scholarly journals Experimental Study on Joint Properties of Steel Secondary Beam Connected with Concrete Main Beam Using an Embedded Part

2021 ◽  
Vol 719 (2) ◽  
pp. 022065
Author(s):  
Xiaohong Sun ◽  
Xiaoxiao Feng ◽  
Shutong Yang ◽  
Shenglin Li ◽  
Yanqiang Wang
2012 ◽  
Vol 166-169 ◽  
pp. 329-332
Author(s):  
Hai Xia Chen

In this paper ,taking industrial factory building , the size of 33 * 19.8 m2 for example, analyzes Integral reinforced concrete floor system under the loads by Finite element analysis software ANSYS. In the calculation process, beam element is beam4, slab element is shell63, Changing the line stiffness ratio of beam and slab, main beam and secondary beam, researches of moment on the main beam and the secondary beam by means of line stiffness ratio. It is showed that , when the value of line stiffness ratio is more than 10, mid-span moment is fewer obviously with the Increasing K ; when the value of line stiffness ratio is between 2 and 5, mid-span moment is fewer, too; when the value of line stiffness ratio is shorter than 2, mid-span moment does almost not changed.


2020 ◽  
Vol 2 (2) ◽  
pp. 115-122
Author(s):  
Adita Devania ◽  
Andrias Rudi Hermawan

Abstract  The Conexio Appartements in actual condition are designed using conventional reinforced concrete method and does not have good quality. While in the project also often afected by the weather. The use of precast concrete are having some excellence of them are not affected by the weather, well maintained quality, and earthquake resistant. The connection between the precast elements play an important role in precast buildings to make the buildings resistant to earthquake. This modification is intended to created earthquake resistant precast building  according to SNI 2847:2013 with good quality control. In this study, the building will be modified into 8 floors precast building as planned and reviewed which will be analyzed by ETABS. From the results of the modification according to SNI 1726:2012 and SNI 2847:2013 we obtained, main beam dimension 40x60cm, secondary beam 35x55 cm, column dimension 65x65 cm, overtopping 6 cm for slab and using Splice sleeve grout for column to column connection, lap splices 500mm for beam-column connection, and 30x40cm for concrete consol dimension.Keywords : Precast, Splice Sleeve, Wet Connection.Abstrak Apartemen The Conexio pada kondisi sebenarnya dirancang menggunakan metode konvensional dengan kondisi mutu yang kurang baik. Dalam pelaksanannya, proyek tersebut juga sering terganggu oleh cuaca. Penggunaan beton pracetak memiliki beberapa keunggulan diantaranya pelaksanaannya tidak terpengaruh oleh cuaca, memiliki mutu yang terjaga dan tahan gempa. Sambungan antar elemen pracetak sangat berperan penting dalam bangunan dengan beton pracetak yang tahan gempa sehingga perlu diperhitungkan sesuai dengan peraturan. Modifikasi ini ditujukan untuk menghasilkan gedung dengan pracetak yang tahan gempa sesuai dengan SNI 2847:2013 dengan pengendalian mutu yang baik. Dalam studi ini, gedung tersebut akan dilakukan modifikasi struktur menjadi beton pracetak dengan tinjauan 8 lantai dan analisa dibantu dengan software ETABS. Dari hasil modifikasi yang dilakukan, elemen-elemen pracetak sesuai dengan ketentuan SNI 1726:2012 dan SNI 2847:2013 yaitu meliputi ukuran balok induk 40x60cm, ukuran balok anak 35x55 cm, dengan kolom berdimensi 65x65 cm, tebal overtopping 6 cm pada pelat dan menggunakan Splice sleeve grout pada sambungan kolom, penyambungan balok-kolom dengan panjang penyaluran 500 mm dan penggunaan konsol pada kolom dengan dimensi 30x40cm. Kata kunci  : Beton Pracetak, Splice Sleeve, Sambungan Basah.  


Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.


1962 ◽  
Vol 5 (4) ◽  
pp. 387-394 ◽  
Author(s):  
Bruce Quarrington ◽  
Jerome Conway ◽  
Nathan Siegel
Keyword(s):  

1974 ◽  
Vol 126 (2) ◽  
pp. 243-248
Author(s):  
A WAKABAYASHI ◽  
T KUBO ◽  
K CHARNEY ◽  
Y NAKAMURA ◽  
J CONNOLLY

1963 ◽  
Vol 45 (3) ◽  
pp. 374-383 ◽  
Author(s):  
Donald C. McIlrath ◽  
George A. Hallenbeck ◽  
Hubert A. Allen ◽  
Charles V. Mann ◽  
Edward J. Baldes ◽  
...  
Keyword(s):  

1958 ◽  
Vol 34 (1) ◽  
pp. 11-20 ◽  
Author(s):  
Henry D. Janowitz ◽  
Vernon A. Weinstein ◽  
Rhoda G. Shaer ◽  
James F. Cereghini ◽  
Franklin Hollander

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