📘 ❞ Design and Construction of Cable-Stayed Bridges in the Czech Republic ❝ كتاب
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█ _ 0 حصريا كتاب ❞ Design and Construction of Cable Stayed Bridges in the Czech Republic ❝ 2025 Republic: Construction of in the Republic Jiri Strasky, Ph D Consultant T Y Lin International San Francisco, California For 22 years, Jiri Strasky worked as chief design engineer with Dopravni Stavby, Olomouc a leading state company for construction bridges in Czechoslovakia In this position, Dr was responsible the development precast segmental, stress ribbon cablestayed bridges After political changes in 1989, he opened his own office and appointed professor concrete structures at Technical University of Brno United States, served as a special consultant the first bridge built North America recently completed Wisconsin Avenue viaduct For his design work, received FritzSchumacher Prize from of Hannover, Germany, an Award of Excellence Portland Cement Association Currently, Dr is a consultant T International in San Francisco 24 The author discusses design, analysis of two innovative precast, prestressed concrete cable stayed bridges The first bridge was across Elbe River near Podebrady the second over major railroad junction in Prague Vrsovice decks these bridges comprise a spine box girder assembled match cast segments and place overhangs supported by precast concrete struts External prestressing used to strengthen deck To confirm validity static dynamic analysis structural system conducted together with model testing shows how system, some modification, can be applied other stayed and segmental T wo using segmental construction (see Figs 1, 2 8) were erected freeway One near Podebrady while The combine high quality speed segmental structures continuity (see Figs 3 4) main span approach spans bridges consists spine segments and cast struts Both are suspended axis on composite steel pylons that are fixed into Fig Sa) stays arranged semi fan shape and formed strands grouted tubes posttensioned (suspended) draped external tendons placed (see Fig Sb) progressive cantilevers by crane moving PCI JOURNAL الهندسة المدنية مجاناً PDF اونلاين قسم خاص بكتب للتحميل مجال وهي أحد فروع والمعنية بدراسة وتصميم وتحليل المنشآت المختلفة كالأبنية السكنية والخدمية والطرق والجسور والأنفاق والمطارات والموانئ وشبكات إمداد مياه الشرب ومحطات ضخ المياه الصرف الصحي التنقية ومعالجة والسدود وكذلك مشاريع الري والإشراف عمل هذا أثناء فترة استمرارها لذا لا يجوز حصر العلم بأنه المعني بالتصميم وحده فقط وهي كأي علم تتطور باستمرار ودون توقف وفي الآونة الحديثة ترابطت مع التطور الصناعي بشكل كبير لإنتاج مواد إنشائية جديدة ومتطورة تفي بالمتطلبات التي تكون دائما متزايدة من المجتمع A section books civil engineering that one branches concerned studying, designing analyzing various installations such as residential service buildings, roads, bridges, tunnels, airports, ports, drinking water supply networks, pumping stations, sewage purification treatment dams, well irrigation projects, supervising work Establishments during period their continuation, so it not permissible limit flag alone
كتاب
Design and Construction of Cable-Stayed Bridges in the Czech Republic
كتاب
Design and Construction of Cable-Stayed Bridges in the Czech Republic
- مساهمة من: Jiri Strasky, Ph.D.
( الأربعاء 13 يناير 2016 ( 4:47 مساءً )) - تبليغ عن سوء استخدام
Design and Construction
of Cable-Stayed Bridges in
the Czech Republic
Jiri Strasky, Ph.D.
Consultant
T.Y. Lin International
San Francisco, California
For 22 years, Jiri Strasky worked as
chief design engineer with Dopravni
Stavby, Olomouc-a leading state
company for the construction of bridges
in Czechoslovakia. In this position,
Dr. Strasky was responsible for the
development and design of precast
segmental, stress-ribbon and cablestayed
bridges. After political changes in
1989, he opened his own design office
and was appointed professor of concrete
structures at the Technical University of
Brno. In the United States, he served as
a special consultant in the design of the
first stress-ribbon bridge built in North
America and for the recently completed
Wisconsin Avenue viaduct. For his
design work, he received the FritzSchumacher
Prize from the University of
Hannover, Germany, and an Award of
Excellence from the Portland Cement
Association. Currently, Dr. Strasky is a
consultant with T.Y. Lin International in
San Francisco.
24
The author discusses the design, analysis and construction of
two innovative precast, prestressed concrete cable-stayed
bridges recently built in the Czech Republic. The first bridge
was built across the Elbe River near Podebrady and the
second bridge was built over a major railroad junction in
Prague- Vrsovice. The decks of these bridges comprise a
spine box girder assembled of precast, match-cast segments
and cast-in-place overhangs supported by precast concrete
struts. External prestressing was used to strengthen the deck.
To confirm the validity of the design, a static and dynamic
analysis of the structural system was conducted together with
model testing. The author shows how this system, with some
modification, can be applied to other cable-stayed and
segmental concrete bridges.
T wo cable-stayed bridges using precast, prestressed concrete segmental
construction (see Figs. 1, 2 and 8) were recently erected for a freeway in
the Czech Republic. One bridge was built across the Elbe River near
Podebrady while the other bridge was built over a major railroad junction in
Prague-Vrsovice.
The bridges combine the high quality and speed of construction of precast segmental
structures with the structural continuity of cast-in-place concrete (see
Figs. 3 and 4). The deck of the main span and approach spans of these bridges
consists of a spine box girder assembled of precast, match-cast segments and
cast-in-place overhangs supported by precast concrete struts.
Both bridges are suspended in the bridge axis on composite steel pylons that
are fixed into the deck (see Fig. Sa). The stays are arranged in a semi-fan shape
and are formed by strands grouted in steel tubes. The approach spans are posttensioned
(suspended) on draped external tendons placed in the bridge axis (see
Fig. Sb). The precast concrete segments were erected in progressive cantilevers
by a special crane moving on the deck.
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