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Abstrak :
Tujuan utama dari penelitian ini adalah untuk mengobsevasi dan membandingkan perilaku dari bermacam tipe sambungan antara papan penutup dan rangka kayu yang merepresentasikan bagian dari shear wall kayu. Setiap sampel kemudian dibandinkan berdasarkan beberapa parameter antara lain: strength limit state, yield limit state, energi terdisipasi, dan ductility ratio. Eksperiment ini dilaksanakan mengacu pada ASTM E2126 dan ISO 16670 Loading Protocol dan tes kuat tarik terstandar. Terdapat 5 macam koneksi yang di amati: 1) paku dengan jarak interval 50 mm, 2) paku dengan jarak interval 100 mm, 3) staple dengan jarak interval 25 mm, 4) staple dengan jarak interval 50 mm, dan 5) menggunakan perekat kayu standar. Hasil dari test tersebut kemudian dibandingkan menggunakan metode statistik meliputi descriptive statistics¸F-Test, dan T-Test. Hasil dari perbandingan tersebut mengungkapkan bahwa semakin besar jarak interval antar sambungan akan menurunkan performa dari struktur sambungan antara papan penutup dan rangka kayu. Hal ini didukung dengan nilai P yang dihasilkan saat membandingkan setiap sample yang bernilai lebih rendah dari 0.01. Selain itu, hasil perbandingan antara sambungan paku dan staple menggunakan F-Test dan T-Test menemukan bahwa ada kemungkinan untuk mensubstitusikan paku dengan staple dikarenakan nilai P yang di hasilkan sangat dekat dengan 0.1. Akan tetapi, penelitian lebih lanjut sebaiknya dilakukan untuk membuktikan konsistensi hasil ini. Temuan lainnya adalah performa dari sambungan antara papan penutup dan rangka kayu berkurang sebanyak 32% pada cyclic loading test dibandingkan dengan hasil pada tes kuat tarik. Sayangnya, hasil eksperimen terhadap sambungan perekat kimia tidak dapat di analisis karena sampel yang bergeser selama pengujian

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The objective of this research is to observe and compare the behaviour of the different types of connection between the sheathings and timber section that reassemble the part of timber shear wall of the sheathing-to-framing connection. The comparison of each type of sample is based on few performance parameters such as strength limit state, yield limit state, failure limit state, energy dissipated, and the ductility ratio. The test is conducted in accordance with ASTM E2126 and ISO 16670 loading protocol and a standard monotonic test. On the test, one sample will be tested on the monotonic loading test while the rest (4 samples) are tested on cyclic loading test. There are 5 variations of the sheathing-to-framing connection that being tested: 1) nails on 50 mm interval, 2) nail on 100 mm interval, 3) staple on 25 mm interval, 4) staple on 50 mm interval, and 5) glue connection. The result of the test then compared using statistics method including descriptive statistics, F-Test, and T-test. The result of the comparison shows that the increment of the connection interval will significantly reduce the performance of the sheathing-to-framing connection. It is supported by the fact the P value produced while comparing each sample with different interval is less than 0.01. It was found that there might be a possibility to change nail connection with staple, this is supported by the fact the P value on comparison between nail on 50 mm interval and staple on 25 mm interval is close to 0.1. However, further study should be conducted to prove its consistency. This study also found that the hysteretic performance of sheathing-to-framing in cyclic loading test is reduced by 32% in contrast to the monotonic result. Unfortunately, the result from the glue connection on cyclic testing could not be analysed due to damaged data caused by slipping sample.

Abstrak :
Study of loading rate effect on behavior of clay under one-way undrained cyclic loading was conducted by using triaxial automated system apparatus under stress controlled and undrained condition. The rests were carried out on Depok clay samples which compacted rising Standard Proctor at loading rate of 0, 05 and 0,5 %/min. and with a confining pressure (o3) of 50 kPa on sample. The samples were saturated until the coefficient B higher than 0.97. The test results indicated that the larger of delta-strain occured or higher loading rate.

Abstrak :
ABSTRAK
Distortion-induced fatigue cracking has occurred in many types of steel bridge structures, especially welded structures where high local stresses exit. This research experimentally investigates the fatigue cracking behaviors around the web gap of welded I-Beam. A total of nine specimens in three series of experiments were tested under constant cyclic loading to observe the cracking behaviors that include crack initiation, crack propagation, and final failure. The test results show that the cracks initates along the weld toe and grows upward to the lower stress field with lower strain energy, whereas the second crack occurs inside the "weak zone" depending on the critical stress or spot available in the area. This second crack is critical as it leads to the beam failure.

Abstrak :
This book presents experimental results and theoretical advances in the field of ultra-low-cycle fatigue failure of metal structures under strong earthquakes, where the dominant failure mechanism is ductile fracture. Studies on ultra-low-cycle fatigue failure of metal materials and structures have caught the interest of engineers and researchers from various disciplines, such as material, civil and mechanical engineering. Pursuing a holistic approach, the book establishes a fundamental framework for this topic, while also highlighting the importance of theoretical analysis and experimental results in the fracture evaluation of metal structures under seismic loading. Accordingly, it offers a valuable resource for undergraduate and graduate students interested in ultra-low-cycle fatigue, researchers investigating steel and aluminum structures, and structural engineers working on applications related to cyclic large plastic loading conditions.

Abstrak :
This book contains manuscripts of topics related to numerical modeling in Civil Engineering (Volume 1) as part of the proceedings of the 1st International Conference on Numerical Modeling in Engineering (NME 2018), which was held in the city of Ghent, Belgium. The overall objective of the conference is to bring together international scientists and engineers in academia and industry in fields related to advanced numerical techniques, such as FEM, BEM, IGA, etc., and their applications to a wide range of engineering disciplines. This volume covers industrial engineering applications of numerical simulations to Civil Engineering, including: Bridges and dams, Cyclic loading, Fluid dynamics, Structural mechanics, Geotechnical engineering, Thermal analysis, Reinforced concrete structures, Steel structures, Composite structures.