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"Studying about cable stayed bridge become trend in the last few years. Since the improvement of the material technology and the need of longer bridge so the cable stayed bridge become more important in the last few years.Since the span become longer, so the structure will become more flexible and external load such are traffic, wind, rain and earthquake become more significant to the structure. When the displacement of the deck will increase, it will make uncomforting for human. Many scientists and engineers try to make a control of cable stayed bridge, so that the response will become safety and good for human comfort also.In this study we try to simulate the model from experiment to the behavior of the cable stayed bridge itself. We also try to control the response of the structure. This control that we have done must be realistic and easy to use.In fact with computer simulation we can do such sophisticated control, but the main problem if it's not applicable the control that we use become useless, otherwise it will be dangerous also if we get a result in reality far from out simulation.So in this study we do simple control to cable stayed bridge, and do some test that could be realistic in the reality. The sag of the cable is big and it will make a non linear effect. We do some analysis of cable stayed bridge in ANSYS 5.5.3 and do control simulation in SIMULINK by catching the static non linear result from ANSYS 5.5.3.The simulation that we done here to see the effectives of the control in many cases. We can be sure that the control is good if we get a good solution with the control of the structure."

"In the framework of the design of Cisadane Cable Stayed Bridge, a wind tunnel testing on scaled model has been conducted lo observe its aerodynamic forces. The wind tunnel which is used for test, was a low speed wind tunnel.The test results are the coefficient Ci, Cd and Cm. The coefficients can be used lo calculate the load of the structure, the lift Force and the pitching moment. Based on the test results, shape improvement of the proposed bridge deck is also considered."

"ABSTRACTThe present study deals with the static and dynamic behavior of cable-systems and cable-stayed bridge systems. In the static analysis, linear. and geometry nonlinearities such as large-deflections and stress-stiffening are evaluated. In the dynamic analysis, only linear: analysis is taken into account, the nonlinearities are disregarded. In the cable system, there are two cable models evaluated, i.e., the horizontal cable-systems and inclined cable-systems. The cable systems are modeled as three-dimensional (3-D) structural system. The various prestressed forces in the cables are investigated, and the results show that the nonlinearity effects do not quite have an influence when the prestressed forces are between 21% - 45% fp. and 15% - 45% fpU for the horizontal cable and inclined cable-systems, respectively. The transverse (coupling effect) stiffnesses are nearly zero for the prestressed forces in the cable between 16% - 45% Cu. The dynamic characteristic of both cable-systems are quite similar, with the first mode is out-of-plane motion. The gravity acceleration does not take an important influence in the dynamic behavior of the cable-systems study herein. In the cable-stayed bridge systems, two common types of cable-stayed bridge are investigated, namely the fan-type and the harp-type cable-stayed bridge. The bridges are modeled as two-dimensional (2-D) structural system. The comparison results of axial forces in the cables, vertical displacement in the mid-point of middle span, horizontal displacement at top of pylon, bending moment in the deck, axial forces in the deck and also vertical reaction at foundation of pylon are all investigated. The results show that the nonlinearity effects with the prestressed forces in stay cable between 16% - 45% fp? seem do not have quite important influence. The natural frequencies and mode shapes for the first 20 modes are presented and the results are quite similar for the both bridge systems. The influence of dead load multiplier to the dynamic characteristic of such bridges are also evaluated and the results show that the structure buckle under 19 DL (Dead Load) and 15 DL for the fan and harp-type, respectively. These results show that bridge models studied herein are in the safe design consideration."

"Tesis ini membahas mengenai perhitungan pembangunan secara bertahap berdasarkan ketergantungan waktu (time dependent) jembatan cable stayed dengan studi kasus Jembatan Suramadu. Adapun hasil yang akan diperoleh pada penelitian ini yaitu mengevaluasi perilaku struktur pada saat pelaksanaan bertahap menggunakan metode kantilever seperti besarnya gaya-gaya kabel, tegangan elemen struktur, dan lendutan gelagar yang terjadi pada setiap tahapan konstruksi. Teknik analisa yang digunakan yaitu forward assemblage analysis dan backward disassemblage analysis. Dimana untuk teknik menggunakan forward assemblage analysis pelat dimodelkan sebagai non komposit dan komposit serta menggunakan standar CEB-FIP dan ACI untuk mengetahui seberapa pengaruh nilai lendutan kedua standar tersebut. Dari hasil penelitian diperoleh bahwa terjadi penurunan besaran lendutan gelagar sebesar 19 % dan gaya kabel sebesar 22 % setelah 10 hari pengecoran pelat dilakukan (sudah terjadi efek struktur komposit), dari asumsi pelat dimodelkan sebagai beban luar menjadi pemodelan struktur komposit. Dengan menggunakan standar CEB-FIP dan ACI diperoleh hasil bahwa nilai lendutan pada awal penempatan pelat (sudah terjadi struktur yang komposit) lebih kecil jika menggunakan code ACI. Hal ini disebabkan karena efek ACI pada awal terjadi struktur yang komposit memberikan nilai efek kekuatan material yang lebih besar dibandingkan dengan CEB-FIP. Sedangkan pada akhir-akhir pelaksanaan konstruksi nilai lendutan gelagar menggunakan CEB-FIP memperoleh hasil yang cenderung lebih kecil dibandingkan dengan ACI. Hasil perbandingan analisa antara forward assemblage analysis dan backward disassemblage analysis menggambarkan bahwa untuk nilai lendutan gelagar, terjadi perbedaan hasil rata-rata sebesar 3 % sedangkan untuk nilai gaya kabel terjadi variasi perbedaan antara 1 - 4 %.

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This thesis discuss the construction calculation in stages based on the dependence of time (time dependent) cable stayed bridge, using Suramadu Bridge as a case study. Results that will be obtained in this study are to evaluate the behavior of structures during the implementation stages by using cantilever method such as the cable forces, tension structural element, and girder deflection that occurs in each stage of construction. The analysis technique that used in this thesis are the forward assemblage analysis and backward disassemblage analysis. Where the forward assemblage analysis technique modeled the plate as a non-composite and composite form by using CEB-FIP and ACI standards to determine the influence of the deflection.

The result showed that there are decreasing deflection around 19% and cable force by 22% after 10 days of casting plate done (already in composite structure), from the assumption, the plate is modeled as external loads into composite structures model. By using standard CEB-FIP and ACI showed the value of deflection in initial placement of the plate (in composite structure) is smaller when using the ACI code. This is because the effect of ACI in the early composite structure gives the material strength in a greater value than the CEB-FIP. In contrary, at the end of the construction stages, the girder deflection that using CEB-FIP gives smaller deflection compared to ACI. The comparison analysis between the forward assemblage analysis and disassemblage analysis illustrates that there was an average difference of 3 % while for the cable force variations the differences are between 1 - 4 %."

"Jembatan cable-stayed merupakan salah satu bangunan teknik sipil dengan karakteristik tersendiri. Secara struktur, jembatan cable-stayed mempraktekkan teknik yang tinggi. Secara estetika, jembatan ini menampilkan sosok yang elegan dan ornamental. Teknik cable-stayed sesuai untuk diterapkan pada bentangan menengah sampai panjang. Dari sudut pandang ekonomi, jembatan cable-stayed juga menjadi pilihan yang tepat. Dalam proses perancangan, untuk memenuhi syarat keamanan dan kenyamanan penggunaan, ada kriteria minimal perancangan struktur yang harus dipenuhi dengan toleransi yang cukup antara keamanan, kenyamanan, dan nilai ekonomis struktur.Berdasarkan hal ini, konfigurasi struktur yang dihasilkan dari setiap perancangan akan sangat variatif. Bergantung kepada variasi rancangan, setiap konfigurasi struktur yang berbeda akan menghasilkan kuantitas volume material yang berbeda pula, yang secara langsung mempengaruhi struktur dari nilai ekonomisnya. Dengan melakukan perancangan struktur jembatan cable-stayed pada konfigurasi struktur yang bervariasi, volume-volume material hasil perancangan struktur dapat saling diperbandingkan sehingga dapat diketahui konfigurasi struktur yang bagaimana yang mampu memanfaatkan material secara optimal."