IABSE Symposium, Istanbul 2023: Long Span Bridges最新文献_第2页

Geotechnical earthquake engineering for the detailed design of the 1915 Çanakkale bridge 1915年Çanakkale大桥抗震岩土工程详细设计

IABSE Symposium, Istanbul 2023: Long Span Bridges Pub Date : 1900-01-01 DOI: 10.2749/istanbul.2023.0384

Giuseppe Nicosia, A. Sbitnev, Yu Zhang, Michael Schunk

{"title":"Geotechnical earthquake engineering for the detailed design of the 1915 Çanakkale bridge","authors":"Giuseppe Nicosia, A. Sbitnev, Yu Zhang, Michael Schunk","doi":"10.2749/istanbul.2023.0384","DOIUrl":"https://doi.org/10.2749/istanbul.2023.0384","url":null,"abstract":"The paper provides a summary and description of the geotechnical earthquake engineering aspects related to the detailed design and construction of the record-breaking 1915 Çanakkale suspension bridge with a 2023 m long main span, 770 m long side spans and approach bridges of 365 m and 680 m. The main steel bridge foundations comprise two concrete caisson foundations placed on soil improved by steel pile inclusions, two gravity-based concrete anchor blocks and two side span piers founded on bored piles. The post tensioned concrete approach bridges are supported by piers on bored piles, which – where needed – are seismically protected by ground improvement consisting of deep soil mixing. The paper briefly describes the main features of the seismotectonic setting and the derivation of the effective input motion used in the bridge global structural model. The derivations of the foundations’ dynamic impedances and the link to the site response are described. The design and construction of the foundation systems, consisting of both soil improvement and the foundation elements themselves, and the interaction with the site response analysis, the liquefaction hazard and lateral soil deformation assessments are described. 2D nonlinear time history analyses for the evaluation of the ground (slope movements and the derivation of kinematic forces on the piles supporting European and Asian approach bridges and side span piers are also illustrated. Finally, a brief description of the monitoring system related to geotechnical earthquake response and its rational is presented.","PeriodicalId":237396,"journal":{"name":"IABSE Symposium, Istanbul 2023: Long Span Bridges","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124696087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Innovative unloading and lifting system applied for deck erection of new suspension bridge across the Danube river in Romania 罗马尼亚多瑙河新建悬索桥桥面安装中应用的创新卸载和提升系统

IABSE Symposium, Istanbul 2023: Long Span Bridges Pub Date : 1900-01-01 DOI: 10.2749/istanbul.2023.0560

Fumiya Murano, M. Nakayama, Shinjiro Seki, Yuya Uchida

{"title":"Innovative unloading and lifting system applied for deck erection of new suspension bridge across the Danube river in Romania","authors":"Fumiya Murano, M. Nakayama, Shinjiro Seki, Yuya Uchida","doi":"10.2749/istanbul.2023.0560","DOIUrl":"https://doi.org/10.2749/istanbul.2023.0560","url":null,"abstract":"This paper describes an innovative unloading and lifting system applied for the deck erection of a new suspension bridge (1120m in main span) across the Danube in Romania, with emphasis on concept design and operation on site. The deck erection was performed in the spring of 2022. In this project, independent unloading and lifting systems were arranged while considering topographical constraints. One of the systems was used for unloading deck segments from the river to the tips of the embankments via a swing operation, whereas another was used to lift the deck segments vertically from the river or embankment to the designated elevations. In general, deck lifting devices equipped with both jacking and carriage system are installed in a cross-gantry manner on main cables. In this project, all structural and mechanical components relevant to deck unloading and lifting operations except clamps anchored to the main cables were integrated at the deck side to pursue light weight and highly mobile devices taking account of irregular deck erection step. As a result, less material and cost effective erection devices were realized compared with dominant gantry systems.","PeriodicalId":237396,"journal":{"name":"IABSE Symposium, Istanbul 2023: Long Span Bridges","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127958466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seismic Retrofit using the Largest Viscous Damper in Japan 日本使用最大粘性阻尼器进行抗震改造

IABSE Symposium, Istanbul 2023: Long Span Bridges Pub Date : 1900-01-01 DOI: 10.2749/istanbul.2023.0760

Kodai Shimose, Takaoki Kaneda, M. Nishitani, Kazutomo Ishii

{"title":"Seismic Retrofit using the Largest Viscous Damper in Japan","authors":"Kodai Shimose, Takaoki Kaneda, M. Nishitani, Kazutomo Ishii","doi":"10.2749/istanbul.2023.0760","DOIUrl":"https://doi.org/10.2749/istanbul.2023.0760","url":null,"abstract":"The Tatara Bridge is a cable-stayed bridge with a center span 890m. The seismic verification analyses of the existing conditions were carried out with the aim of further improving the seismic performance of this bridge. The results of the analyses for the bridge revealed the considerable sway-mode vibration in longitudinal direction was dominant during large-scale earthquakes, and so seismic devices such as eight viscous dampers and stoppers were found to be necessary to mitigate the vibration. It was decided to install the largest viscous dampers in Japan with a damping resistance force of 2,000kN and a stroke of ±950mm at two towers. Before the installation, the performance tests assuming actual bridge conditions during earthquakes were conducted on one representative damper using a vibration table (length 20m × width 15m, maximum displacement ±1,000mm) owned by the National Research Institute for Earth Science and Disaster Resilience. Since the tests showed that one representative damper had the required performance, it was determined that the performance test was not necessary for the remaining seven dampers by considering a method of the performance verification. This paper describes the performance test of the representative damper and the performance verification method of the remaining seven dampers.","PeriodicalId":237396,"journal":{"name":"IABSE Symposium, Istanbul 2023: Long Span Bridges","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132046601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hanger Replacement of Fatih Sultan Mehmet Bridge 法提赫苏丹穆罕默德桥吊架更换

IABSE Symposium, Istanbul 2023: Long Span Bridges Pub Date : 1900-01-01 DOI: 10.2749/istanbul.2023.0079

Cemal Coskun, T. Cetinkaya, Makato Sugimura

引用次数: 0

PPWS fabrication and erection of the 1915 Çanakkale PPWS制造和安装1915 Çanakkale

IABSE Symposium, Istanbul 2023: Long Span Bridges Pub Date : 1900-01-01 DOI: 10.2749/istanbul.2023.1030

Jungin Kim, Hyun-sok Choi, Y. Yamasaki

{"title":"PPWS fabrication and erection of the 1915 Çanakkale","authors":"Jungin Kim, Hyun-sok Choi, Y. Yamasaki","doi":"10.2749/istanbul.2023.1030","DOIUrl":"https://doi.org/10.2749/istanbul.2023.1030","url":null,"abstract":"The 1915 Çanakkale Bridge located at the Northeastern end of the Çanakkale strait in Türkiye is a three-span suspension bridge having a main span length of 2023m, which is the longest one in the world, and a side span length of 770m. Two main cables formed by parallel wire strands are arranged apart from each other by 38m. For the erection of main cables with 144 strands (148 strands in side spans) and 18,288 wires (18,796 in side spans), the Prefabricated Parallel Wire Strand (PPWS) method has been adopted. Each strand contains 127 galvanized high-strength steel wires with a tensile strength of 1,960 MPa and a diameter of 5.75mm. The strands in the saddle sections are pre-shaped in a rectangular shape with aiming at improving quality and expediting the main cable erection work by excluding on-site shaping. The construction area has a very strong wind effect, so the order of strand construction was established to minimize the effect of galloping during strand erection. GNSS surveying was adopted as the main method of geometry control of the reference strand. GNSS surveying is advantageous for long-distance surveying in that the error does not increase according to the survey. Since the erected strands move continuously by wind and temperature, the use of the average coordinate value of a certain time was adopted improving the measurement accuracy.","PeriodicalId":237396,"journal":{"name":"IABSE Symposium, Istanbul 2023: Long Span Bridges","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133347632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Some details from the original static calculation of the Chain bridge in Budapest – 1842 一些细节来自于布达佩斯链桥的原始静力计算- 1842

IABSE Symposium, Istanbul 2023: Long Span Bridges Pub Date : 1900-01-01 DOI: 10.2749/istanbul.2023.0190

Bence Hajós

引用次数: 0

Stress Indicators - A Complete Checking System of Stresses for Box Section 应力指标——箱形截面应力的完整检查系统

IABSE Symposium, Istanbul 2023: Long Span Bridges Pub Date : 1900-01-01 DOI: 10.2749/istanbul.2023.1003

Dong Xu, Qinlong Jia, Haili Jiang, Y. Jin

{"title":"Stress Indicators - A Complete Checking System of Stresses for Box Section","authors":"Dong Xu, Qinlong Jia, Haili Jiang, Y. Jin","doi":"10.2749/istanbul.2023.1003","DOIUrl":"https://doi.org/10.2749/istanbul.2023.1003","url":null,"abstract":"The Box section has complicated mechanical behavior under loads, including in-plane and out-of-plane stresses in each slab of box components. Traditional checking stresses originated from simple open sections, such as rectangular, T and I sections, featured by normal stresses at extreme fibers and shear stress in the web. For statically indeterminate box sections, cracks found in the outside surface of the web were much different from those found inside the web. This means that the stress indicator for the outside surface of the web should be different from the stress indicator for the inside surface of the web. These indicators are even different from the indicator at the middle lane of the web, which actually is the traditional shear stress indication in the web. The newly developed stress indicator system includes nine stress indicators in each slab of the box components. Each slab has three layers, i.e., the top, bottom and middle layer. Each layer has three stress directions: longitudinal, transverse and principal. Thus, the nine stress indicators for each slab will consist of all the mechanical behavior, including bending, shear and torsion, under symmetrical and unsymmetrical loads for slabs of the box section. This stress indicator system plays an important role in forensic engineering, especially for deficient bridges.","PeriodicalId":237396,"journal":{"name":"IABSE Symposium, Istanbul 2023: Long Span Bridges","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124426395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural Health Monitoring of Bridges: State of the Art 桥梁结构健康监测:最新进展

IABSE Symposium, Istanbul 2023: Long Span Bridges Pub Date : 1900-01-01 DOI: 10.2749/istanbul.2023.0620

Rayan Husain, S. Al-Sanad, J. Parol

引用次数: 0

Design innovation of Shiziyang Bridge 狮子洋大桥设计创新

IABSE Symposium, Istanbul 2023: Long Span Bridges Pub Date : 1900-01-01 DOI: 10.2749/istanbul.2023.0984

Lei Zhao, Bing Cui, M. Wu, Jun Xu

引用次数: 0

Rapid post-earthquake assessment for regional bridges based on nonlinear dynamic response simulations 基于非线性动力响应模拟的区域桥梁震后快速评价

IABSE Symposium, Istanbul 2023: Long Span Bridges Pub Date : 1900-01-01 DOI: 10.2749/istanbul.2023.0972

Jipeng-Yang, Limin Sun, Ye Xia, Yexiang Yan

{"title":"Rapid post-earthquake assessment for regional bridges based on nonlinear dynamic response simulations","authors":"Jipeng-Yang, Limin Sun, Ye Xia, Yexiang Yan","doi":"10.2749/istanbul.2023.0972","DOIUrl":"https://doi.org/10.2749/istanbul.2023.0972","url":null,"abstract":"This study proposes a rapid post-earthquake damage assessment technology for regional bridges based on nonlinear dynamic time-history response analysis. Compared with the traditional method based on vulnerability curve, the method proposed in this paper can comprehensively consider the structural design parameters and time-frequency characteristics of ground motion, and can quantitatively evaluate the damage state of bridges. This study is mainly divided into three parts: (1) Inverting the surface ground motion to the bedrock, calculate the surface response of the geological drilling points, and then obtain the regional seismic motion nephogram by Kriging interpolation method; (2) establishing the standardized and simplified models of regional bridges; (3) simulating the seismic response of regional bridges by nonlinear dynamic time-history analysis, than the structural damage states were quantitatively evaluated based on the smulation results. Taking 85 bridges in an area as an example, the earthquake disaster simulation was carried out. The results show that the method proposed in this study is efficient and can consider the cumulative damage of aftershocks to the structure, and can provide strong technical support for the selection of post-disaster rescue routes.","PeriodicalId":237396,"journal":{"name":"IABSE Symposium, Istanbul 2023: Long Span Bridges","volume":"55 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123403718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0