scholarly journals PENURUNAN MASA PELAYANAN JALAN AKIBAT KENDARAAN DENGAN BEBAN BERLEBIH

2021 ◽  
Vol 10 (1) ◽  
pp. 56-69
Author(s):  
I Dewa Made Alit Karyawan ◽  
Hasyim ◽  
Khairul Faqihi
Keyword(s):  

Kerusakan jalan disebabkan oleh beberapa faktor yaitu: tanah dasar yang tidak stabil, iklim, sistem drainase yang buruk, material dan proses kerja yang tidak memenuhi persyaratan. Selain itu beban lalu lintas kendaraan memiliki pengaruh yang lebih besar. Beban lalu lintas normal dapat mempertahankan masa layan sesuai rencana. Masalah muncul ketika banyak kendaraan melintas dengan beban melebihi batas yang dipersyaratkan. Karenaberdampak pada pengurangan umur layanan. Karena itu, pengawasan yang ketat di jembatan timbang terhadap kendaraan dengan beban lebih, memerlukan perhatian khusus. Apalagi jika jalan tersebut merupakan jalan arteri yang didominasi oleh kendaraan angkutan barang. Pengaruh penurunan umur pelayanan perkerasan akibat beban lebih dapat dilakukan dengan membandingkan umur layan dengan beban normal dan beban lebih. Penelitian dilakukan pada ruas jalan nasional yaitu Jalan Raya Ahmad Yani yang terletak di Narmada, Kabupaten Lombok Barat. Analisis dilakukan terhadap data sekunder yaitu jumlah kendaraan yang memasuki jembatan timbang dan lalu lintas harian rata-rata tahun 2018 dan 2019. Hasil analisis berupa jumlah beban sumbu ekivalen dan efek kerusakan (Vehicle Damage Factor/ VDF) pada masing-masing jenis kendaraan dengan muatan normal atau lebih yang menggunakan Metode Bina Marga. Selanjutnya, analisis pengurangan umur layan dilakukan berdasarkan hasil kumulatif Equivalent Standard Axle Load (ESAL) pada kondisi beban normal dan beban berlebih. Hasil analisis menunjukkan bahwa angka ekivalen atau VDF kendaran muatan normal sebesar 385120.1870 dan VDF muatan berlebih sebesar 643207.3800 sehingga diperoleh persantase peningkatan nilai VDF sebesar 67.01% serta terjadi penurunan umur sebesar 3.1 tahun dari umur rencana 10 tahun.

2021 ◽  
Vol 248 ◽  
pp. 113152
Author(s):  
George Markou ◽  
Reyes Garcia ◽  
Christos Mourlas ◽  
Maurizio Guadagnini ◽  
Kypros Pilakoutas ◽  
...  

2010 ◽  
Vol 654-656 ◽  
pp. 1928-1931
Author(s):  
Jun Zhang ◽  
Yong Cheng Lin ◽  
Xin Li Wei ◽  
Liu Gang Huang

A modified cohesive zone interface model with a damage factor was proposed to describe the effects of the thermal cycle and humidity aging on the strengths of adhesive joints. The damage factor can not only change the cohesive zone bonding strength but also affect the energies of separation. The modified cohesive zone interfacial model, as a user subroutine, is developed and implemented in ABAQUS to simulate the 90° peeling process of the specimens, which were bonded by anisotropic conducive adhesive film (ACF) and subjected to the cycle and humidity aging tests. The numerical simulated results well agree with experimental results, which confirmed the validity of the new model.


Author(s):  
M.A. Agwa ◽  
M.N. Ali

The present research aims to study the influence of equal channel angular extrusion (ECAE) parameters (die channel angle, die corner angle, and friction coefficient) on cracking and fracture tendency. For this type of analysis, a MATLAB code integrated with finite element Abaqus/Explicit model was developed and used. A parametric study is done to investigate how the damage tendency varies with changes of ECAE parameters. The distribution of the damage factor based on Cockcroft–Latham equation for different channel angles, corner angles, and friction coefficients is depicted. It is observed that the appearance of cracks on the upper surface is more likely to occur than on the lower surface. The reduction in friction coefficient does not guarantee minimum damage tendency. Finally, the optimum parameters for reducing the fracture tendency in ECAE are presented.


2020 ◽  
Vol 837 ◽  
pp. 16-21
Author(s):  
Zi Liang An ◽  
Zi Ye Wang ◽  
Yi Feng Tang ◽  
Wei Xin Wang

The dynamic measurement model for the interface cavities of the diffusion welded joint, which based on the effective resistivity, is established by using the damage factor and the Derby Model of the Bridgman Law. Then the quantitative relationship, which between the direct current potential and the effective area of the joint at high temperature and high pressure, can be obtained. In addition, on the basis of the dynamic four-probe DC potential method and the fieldbus technology, the computer measuring system is established, so that the creep propagation behaviour for the interface cavities of the 316L stainless steel can be monitored in real-time.


2019 ◽  
Vol 54 (13) ◽  
pp. 1741-1759 ◽  
Author(s):  
Dhiraj Kumar ◽  
Suhasini Gururaja

In present work, abrasive waterjet machining has been used to machine adhesively bonded titanium-carbon fiber-reinforced plastics-titanium hybrid laminate with varying traverse speed, jet pressure, and stand-off distance. The effect of varying abrasive waterjet machining parameters on cut quality has been quantified by material removal rate, metal composite interface damage factor, taper ratio ( T r), and surface roughness (Ra). Response surface methodology along with central composite design has been used to analyze the influence of process parameters on output responses. Additionally, analysis of variance was performed to identify the significant parameters on the output responses. For better abrasive waterjet cut quality, the optimal values of process parameters obtained were 200 MPa jet pressure, 237.693 mm/min traverse speed, and 1 mm stand-off distance. The corresponding material removal rate, metal composite interface damage factor, taper ratio, and surface roughness are 5.388 mm3/s, 1.41, 1.16, and 3.827 µm, respectively. Furthermore, validation tests have been performed with obtained optimal parameters that deliver satisfactory outcomes with an error of 5.35%, 3.07%, 2.29%, and 0.39% for material removal rate, metal composite interface damage factor, taper ratio, and surface roughness, respectively.


2018 ◽  
Vol 123 (9) ◽  
pp. 095703 ◽  
Author(s):  
E. El Allam ◽  
C. Inguimbert ◽  
A. Meulenberg ◽  
A. Jorio ◽  
I. Zorkani

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