Dynamic Response of Concrete Pavements under Vehicular Loads

Darestani, Mostafa Yousefi; Thambiratnam, David; Baweja, Daksh; Nataatmadja, A

doi:10.2749/222137806796169164

Cited by 21 publications

(7 citation statements)

References 5 publications

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“…As suggested by different authors, the natural frequency, which depends on type and speed of the vehicle as well as temperature and type of pavement structure, can range from 6 to 12 Hz (Uddin 2003;Darestani et al 2006). It has been found also that truck loading frequency is about 4.6 Hz at a speed of 58 km/h and 6.5 Hz at 82 km/h (Gillespie 1993).…”

Section: Laboratory Testsmentioning

confidence: 99%

Three Different Ways of Calibrating Burger’s Contact Model for Viscoelastic Model of Asphalt Mixtures by Discrete Element Method

2015

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In this paper the viscoelastic behavior of asphalt mixture was investigated by employing a three-dimensional discrete element method. Combined with Burger's model, three contact models were used for the construction of constitutive asphalt mixture model with viscoelastic properties in the commercial software PFC 3D , including the slip model, linear stiffness-contact model, and contact bond model. A macro-scale Burger's model was first established and the input parameters of Burger's contact model were calibrated by adjusting them so that the model fitted the experimental data for the complex modulus. Three different approaches have been used and compared for calibrating the Burger's contact model. Values of the dynamic modulus and phase angle of asphalt mixtures were predicted by conducting DE simulation under dynamic strain control loading. The excellent agreement between the predicted and the laboratory test values for the complex modulus shows that DEM can be used to reliably predict the viscoelastic properties of asphalt mixtures.

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Section: Laboratory Testsmentioning

confidence: 99%

Three Different Ways of Calibrating Burger’s Contact Model for Viscoelastic Model of Asphalt Mixtures by Discrete Element Method

2015

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“…Perkerasan jalan pada simpang bersinyal cenderung lebih cepat mengalami kerusakan, karena di tempat ini sering terjadi antrian kendaraan yang panjang yang akan mempengaruhi waktu pembebanan (Darestani, 2007). Lalu lintas, yang dapat berupa peningkatan beban dan repetisi beban, merupakan salah satu penyebab kerusakan perkerasan lentur.…”

Section: Pendahuluanunclassified

Pengaruh Variasi Tebal Dan Mutu Beton Terhadap Respons Struktural Perkerasan Kaku

Qisthi¹,

Kushari²

2019

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Flexible pavement in the approaching legs of intersection carrying heavy vehicle traffic is often damaged more quickly than what happens in other parts of the pavement. This happens because of the increasing loading time which weakens the pavement stiffness modulus. To overcome this, the flexible pavement on the intersection approaching legs can be replaced by a rigid pavement. This study discusses the design of Jointed Plain Concrete Pavement rigid pavement in the Eastern Approach of North Ringroad-Seturan Highway intersection, in Sleman, Yogyakarta. The Guideline for Design of Cement Concrete Road Pavement, Pd T-14-2003, was used to calculatepaveent thickness and design of joints. The analysis was carried out using a mechanistic-empirical approach using KENSLABS software. The results show that the K400 concrete quality with a thickness of 24 cm is capable of meeting the of fatigue and erosion requirements for a 20-year design life. Keywords: flexible pavement, design life, pavement damage, stiffness modulus, rigid pavement Abstrak Perkerasan lentur pada bagian pendekat simpang yang dilalui lalu lintas kendaraan berat sering kali mengalami kerusakan yang lebih cepat dibandingkan yang terjadi pada bagian lain perkerasan tersebut. Hal ini terjadi karena meningkatnya waktu pembebanan yang melemahkan modulus kekakuan perkerasan. Untuk mengatasi hal ini, perkerasan lentur pada pendekat simpang dapat diganti menjadi perkerasan kaku. Penelitian ini membahas perancangan perkerasan kaku jenis Jointed Plain Concrete Pavement pada Pendekat Timur Simpang Ring Road Utara–Jalan Raya Seturan, di Sleman, Yogyakarta. Pedoman Petunjuk Perencanaan Jalan Beton Semen Pd T-14-2003 digunakan untuk menghitung tebal perkerasan dan perancangan sambungan. Analisis dilakukan dengan menggunakan pendekatan mekanistik-empiris menggunakan perangkat lunak KENSLABS. Hasil penelitian ini memperlihatkan bahwa mutu beton K400 dengan tebal 24 cm mampu memenuhi persyaratan kerusakan fatik dan erosi untuk umur rencana 20 tahun. Kata-kata kunci: perkerasan lentur, umur rencana, kerusakan perkerasan, modulus kekakuan, perkerasan kaku

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“…On the other hand, using the load time history, reduces cracking at the corner about 15% and dramatically increases the cracking at the middle edges. In addition, these results are influenced by the speed of the truck [4,5].…”

Section: Literature Reviewmentioning

confidence: 99%

Dynamic Effects of Moving Loads on the Jointed Plain Concrete Pavement Responses

Shafabakhsh¹,

Vafaei²,

Amiri³

et al. 2017

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Abstract.In this paper, to analyze the Jointed Plain Concrete Pavement (JPCP), a 3-D dynamic model of the pavement was modeled using ABAQUS. Moving load with different speed and interaction between the Dowel bar and concrete has been considered in this research. The output for the strain in the joints has been validated with accurate experimental results. Research has shown that the finite element analysis, is an accurate and efficient method to model the interaction between the dowel bar and surrounding concrete. The results showed that with increasing the speed of moving load, the maximum strain in joints decreases. Such reduction is about 18 % for the 20 ton axial load and the speed of 120 km/hr. relative to the speed of 32 km/hr. In addition, with increasing the axial load, the maximum strain in the joints increases. This increase is more for the lower speeds. In addition, it is found that decreasing the loading speed and increasing the axial load will result in increasing the maximum strain and maximum stress in the connected area of dowel bar and surrounding concrete. Thus it may become more than the ultimate tensile strength and result in initiate cracking in the tensile area of concrete slab, especially in the joints. Furthermore, the results showed that changing the mechanical specification of concrete would not significantly affect the maximum strain in the JPCP, which using C50 instead of C25, the maximum strain would increase about 10 %. However, the mechanical specification of JPCP could affect the cracking propagation and concrete durability.

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Dynamic Response of Concrete Pavements under Vehicular Loads

Cited by 21 publications

References 5 publications

Three Different Ways of Calibrating Burger’s Contact Model for Viscoelastic Model of Asphalt Mixtures by Discrete Element Method

Three Different Ways of Calibrating Burger’s Contact Model for Viscoelastic Model of Asphalt Mixtures by Discrete Element Method

Pengaruh Variasi Tebal Dan Mutu Beton Terhadap Respons Struktural Perkerasan Kaku

Dynamic Effects of Moving Loads on the Jointed Plain Concrete Pavement Responses

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