Shear and Friction Response of Nonseismic Laminated Elastomeric Bridge Bearings Subject to Seismic Demands

Steelman, Joshua S.; Fahnestock, Larry A.; Filipov, Evgueni T.; LaFave, James M.; Hajjar, Jerome F.; Foutch, Douglas A.

doi:10.1061/(asce)be.1943-5592.0000406

Cited by 79 publications

(36 citation statements)

References 15 publications

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“…Dengan memasang suatu sistem isolasi seperti karet bantalan (bearing pad) yang dapat menyerap gangguan tersebut, diharapkan dapat memperpanjang umur pakai serta memperkuat struktur jembatan dan jalan layangsehingga meningkatkan ketahanannya terhadap getaran yang timbul akibat gempa bumi (Manos et al, 2007;Kitaharaet al, 2012;Weisman and Warn, 2012;Filipov et al, 2012;Asl et al, 2014;Warn and Ryan, 2012). Teknologi ini dinilai cukup efektif dan berbiaya relatif rendah (Haque et al, 2013).Elemen ini bekerja dengan meneruskan beban dari bangunan atas ke bangunan bawah yang dipasang diantara badan/gelagar (super structure) dan pilar/tiang (sub structure) (Iancuet al, 2012).…”

Section: Karet Bantalan Untuk Perletakan Jembatan Dan Jalan Layangunclassified

“…Karet bantalan tipe berlapis (laminated rubber bearing) telah luas digunakan terutama untuk jembatan di wilayah rawan gempa seperti Jepang, sehingga sangat cocok untuk juga dapat diterapkan di Indonesia (Aviram et al, 2012). Karet bantalan memiliki kemampuan untuk menciptakan kekakuan vertikal sekaligus fleksibilitas horizontal, tidak terkorosi, mudah saat penggantian dan hanya membutuhkan teknik pemeliharaan yang sederhana, serta biaya instalasi yang rendah (Razzaq et al, 2010;Bhuiyan and Alam, 2012;Steelman et al, 2013, Haqueet al, 2010Sanchez et al, 2013;Liu et al, 2008;Ravari et al, 2012;Alam and Bhuiyan, 2012). Dengan kekakuan yang tinggi maka ketinggian permukaan jembatan atau jalan layang relatif stabil pada saat dikenai beban vertikal dari berat kendaraan dan gelagar jembatan.Sedangkan fleksibilitas horizontal berguna untuk melindung konstruksi akibat terkena ekspansi panas atau beban kejut yang timbul pada saat kendaraan memasuki landasan jembatan, serta getaran akibat terjadinya gempa bumi (Yachya, 1988;Choun et al, 2014).…”

Section: Karet Bantalan Untuk Perletakan Jembatan Dan Jalan Layangunclassified

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Kajian Tekno Ekonomi Pendirian Industri Karet Bantalan Jembatan Jenis Karet Alam Dan Karet Kloroprena

Puspitasari

Cifriadi

Falaah

2017

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Peningkatan konsumsi domestik karet alam melalui pemanfaatan produk karet untuk mendukung pembangunan infrastruktur menjadi solusi untuk kembali memperkuat harga karet alam yang sejak akhir tahun 2011 terus mengalami pelemahan. Produk karet bantalan jembatan yang berfungsi sebagai isolator pelindung struktur jembatan dari getaran dan beban lalu lintas berpotensi untuk dikembangkan karena permintaan tinggi di pasaran. Dalam artikel ini diulas kajian tekno-ekonomi pendirian industri karet bantalan jembatan karet alam dan kloroprena dari aspek teknik hingga ekonomi. Data primer diperoleh dengan metode survei melalui teknik wawancara kepada responden yang dipilih secara sengaja, data sekunder dilakukan dengan menerapkan teknik multiplikasi dokumen dan pencatatan data dari instansi terkait lainnya. Metode pengolahan data menggunakan analisis deskriptif kualitatif dan kuantitatif. Hasil kajian diketahui potensi pasar produk karet bantalan jembatan masih terbuka sebesar 57.000 di tahun 2016 dan ditetapkan kapasitas produksi sebesar 17.000 per tahun (30%) dengan komposisi 75% karet bantalan dari karet alam dan 25% dari karet kloroprena. Ukuran karet bantalan yang diproduksi mengacu pada ukuran standar yang ditetapkan oleh kementerian PUPR Jenis 1 : 350x300x36 mm (30%), Jenis 2 : 400x350x39 mm (35%), Jenis 3 : 450x400x45 mm (35%). Hasil kelayakan finansial menunjukkan bahwa industri karet bantalan jembatan dan jalan layang layak didirikan karena memberikan nilai NPV sebesar IDR 14,22 Milyar (bernilai positif atau lebih besar dari nol), IRR sebesar 20,10% (lebih besar dari faktor diskonto 14%), B/C rasio sebesar 1,22 (lebih besar dari 1) dan PBP selama 4,78 tahun. Industri ini sangat sensitif terhadap penurunan harga jual produk dan kenaikan nilai tukar USD terhadap IDR.Kata kunci : konsumsi domestik karet alam, industri hilir karet, bantalan jembatan.

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Section: Karet Bantalan Untuk Perletakan Jembatan Dan Jalan Layangunclassified

Kajian Tekno Ekonomi Pendirian Industri Karet Bantalan Jembatan Jenis Karet Alam Dan Karet Kloroprena

Puspitasari

Cifriadi

Falaah

2017

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“…However, the girder falling should be prevented with effective restraining systems. Steelman et al [8,9] investigated the behaviors of laminated elastomeric bearings with different parameters and proposed a quasiisolated structural design concept. The "fused elements" design philosophy can be implemented using U-SLEBs by fully applying their predictable and controllable friction sliding characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…McDonald et al [10] studied the static friction coefficient between neoprene rubber bearings and the superstructures or substructures, and their recommended value was 0.2. Steelman et al [8,9] concluded that the multiple cycles of large displacement demands resulted in the degradation of the friction coefficients. Therefore, the sliding distances should be considered when calculating the friction coefficients.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation of Unbonded Laminated Elastomeric Bearings and the Seismic Evaluations of Highway Bridges with Tested Bearing Components

Wang

et al. 2018

Shock and Vibration

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This paper presents an experimental program performed to investigate the behavioral characteristics of unbonded steel-reinforced laminated elastomeric bearings (U-SLEBs), which have been widely used for highway bridges in China. The influences on the friction behaviors, stiffness, and energy dissipations of the different parameters, such as compressive stresses, loading rates, and rubber material, were discussed. The responses of the U-SLEBs were compared with those of the bonded steel-reinforced laminated elastomeric bearings (B-SLEBs). Then, effective analytical models were developed, which considered the mechanical degradation of the U-SLEBs and simulated the realistic behaviors of the B-SLEBs. The seismic responses of a multispan continuous bridge with tested bearing components were also evaluated. The results showed that the mechanical properties of the U-SLEBs tended to degrade due to friction sliding. However, the degrees of the decrease were found to be dependent on the influencing parameters. Meanwhile, the B-SLEBs exhibited stiffening behaviors that led to tearing under large displacement demands. The bridges using U-SLEBs were found to suffer less damage due to the reliable sliding behavior of U-SLEBs. It is recommended that shear keys, which are reasonably designed in the transverse direction, be constructed in order to achieve better seismic performance.

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“…The results showed that the frictional sliding of the bearings can protect the destruction of the substructure, and the support plays the role of "fuse". So the seismic design of small and medium span bridges can use friction slipping of bearings [3].…”

Section: Introductionmentioning

confidence: 99%

Parametric Analysis of Laminated Rubber Bearings with Frictional Sliding

Li¹,

Wu²

2017

Proceedings of the 2017 2nd International Conference on Materials Science, Machinery and Energy Engineering (MSMEE 2017)

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Abstract. The behavior of laminated rubber bearings with frictional sliding was studied by finite element method. The results showed that by using the coulomb friction model better reflect the sliding bearing energy dissipation effect, but it cannot consider the static and dynamic friction transition relationship of the initial slip to the slip state and the change of friction coefficient caused by heating or wear. Therefore, it cannot reflect the degradation of the strength before the initial loading and the hardening phenomenon under the large displacement. The energy dissipation of the bearings was independent of the applied vertical force, and increased with the shear deformation. With the increase of the rubber layer thickness, the equivalent viscous damping ratio and the horizontal equivalent stiffness will decrease. For the change of bearing width, the equivalent viscous damping ratio has little effect on the change trend. The influence of the thickness of the rubber layer and the width of the support on the change trend of the sliding characteristics were too indistinct to describe the variation trend and impact of the bearing sliding characteristics.

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Shear and Friction Response of Nonseismic Laminated Elastomeric Bridge Bearings Subject to Seismic Demands

Cited by 79 publications

References 15 publications

Kajian Tekno Ekonomi Pendirian Industri Karet Bantalan Jembatan Jenis Karet Alam Dan Karet Kloroprena

Kajian Tekno Ekonomi Pendirian Industri Karet Bantalan Jembatan Jenis Karet Alam Dan Karet Kloroprena

An Experimental Investigation of Unbonded Laminated Elastomeric Bearings and the Seismic Evaluations of Highway Bridges with Tested Bearing Components

Parametric Analysis of Laminated Rubber Bearings with Frictional Sliding

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