ABSTRAKPenerapan teknologi dan ilmu pengetahuan dalam bidang pembangunan konstruksi teknik sipil mengalami perkembangan yang pesat dengan berkembangnya zaman sehingga menuntut kita untuk lebih kreatif terutama dalam hal perancangan struktur. Di Indonesia, tantangan yang dihadapi dalam kontruksi gedung bertingkat adalah adanya resiko akibat gempa. Salah satu metode untuk menganalisis beban gempa adalah analisis pushover. Analisis pushover merupakan prosedur analisis untuk mengetahui perilaku keruntuhan suatu bangunan terhadap gempa. Penelitian dilakukan untuk mengetahui seberapa besar pengaruh kekakuan dan kekuatan dinding dengan melakukan eksperimen kuat tekan dari beberapa tipe batu bata yang diambil benda uji batu bata dari Lubuk Pakam dan dibandingkan dengan beberapa negara. Stuktur bangunan dimodelkan sebagai portal 2 dimensi yang terdiri dari 2 variasi model dengan 1 bentang dan 3 bentang yaitu Portal terbuka, Portal berdinding. dengan menggunakan analisa Pushover dan bantuan Program ETABS. Hasil analisis dalam penelitian ini menunjukkan bahwa kontribusi dinding pengisi yang terbuat dari dinding bata mempengaruhi kekakuan lateral struktur bangunan. Kata Kunci : Portal Terbuka, Portal Berdinding, Tipe Batu Bata, Analisis Pushover, Kekakuan Elastis Dan Pasca Elastis ABSTRACT Developed rapidly with the development of the era that requires us to be more creative especially in terms of structural design. In Indonesia, the challenge faced in the construction of high-rise buildings is the risk due to the earthquake. One method to analyze earthquake loads is pushover analysis. Pushover analysis is an analytical procedure to determine the collapse behavior of a building against earthquake. The research was conducted to find out how big the effect of stiffness and strength of the wall by doing a compressive strength experiment of some brick type taken by brick test object from Lubuk Pakam and compared with some countries. The structure of the building is modeled as a 2-dimensional portal consisting of 2 variations of the model with 1 span and 3 spans of open portal, walled portal. using Pushover analysis and ETABS Program assistance. The results of the analysis in this study indicate that the contribution of wall filler made of brick walls affect the lateral stiffness of the building structure. Keywords: Open Portal, Walled Portal, Brick Type, Pushover Analysis, Elastic Stiffness And Post Elastic.
Selection a cross-section of column on building construction needs to keep on a constant review to flexural buckling. The flexural buckling of column affects construction behavior overall. The aim of this study is comparing open and close of a cross-section column profile against flexural buckling. The hollow and pipe are representing close cross-sectional column profiles while I and T profiles are other represent. All profiles used the same material and properties, 400 Mpa of tensile strength and 740 mm2 area of cross-sectional. The high of column was 24 m which, both ends be fixed. Load Resistance Factor Design (LRFD)- SNI 1729:2015 method was applied to analyze the flexural buckling. The T profile was a control to determine percentage of column slender other profiles. The result showed that the slender was 53.43%, 75.57%, and 86.67% for hollow, pipe, and I respectively to T profile. The study indicates that the high column and inertia of cross-sectional were important role in flexural buckling failure.
This study aims to determine the quality of red bricks in Deli Serdang Regency, North Sumatra Province, Indonesia with the SNI 15-2094-2000 standard as a reference. The number of red brick samples is 405 from 15 districts. Tests carried out in the form of testing the appearance, size and tolerances, compressive strength, water absorption, and salt content. The results of the analysis of visible properties for uniform color were 80% of the sample, loud when hit 66.7%, 53% right angle, 86.7% flat, and 86.7% uncracked. For size and tolerance as much as 66.6% of the sample does not meet the standard, for an average compressive strength of 100% it does not meet the standard because it is below 5 MPa. The results of water absorption were only 1.9% of the sample which met the standard below 20%, and for the salt content of all.
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