EP1548190A2 - Konstruktion und Verfahren zur Verbindung von Type-I Spannbetonträgern unter Verwendung von Stahlkonsolen - Google Patents

Konstruktion und Verfahren zur Verbindung von Type-I Spannbetonträgern unter Verwendung von Stahlkonsolen Download PDF

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Publication number
EP1548190A2
EP1548190A2 EP04012158A EP04012158A EP1548190A2 EP 1548190 A2 EP1548190 A2 EP 1548190A2 EP 04012158 A EP04012158 A EP 04012158A EP 04012158 A EP04012158 A EP 04012158A EP 1548190 A2 EP1548190 A2 EP 1548190A2
Authority
EP
European Patent Office
Prior art keywords
beams
psc
steel brackets
sheath pipe
aligned
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04012158A
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English (en)
French (fr)
Other versions
EP1548190A3 (de
Inventor
Won-Keun Kim
Moon-Pal Kim
Hyun-Kee Shin
Seoung-Kyoo Park
Tae-Hyoung Kim
Young-Ho Son
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongyang Construction Co Ltd
Original Assignee
Dongyang Construction Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongyang Construction Co Ltd filed Critical Dongyang Construction Co Ltd
Publication of EP1548190A2 publication Critical patent/EP1548190A2/de
Publication of EP1548190A3 publication Critical patent/EP1548190A3/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/28—Concrete reinforced prestressed
    • E01D2101/285—Composite prestressed concrete-metal

Definitions

  • the present invention relates generally to a structure and a method of connecting I-type prestressed concrete beams (hereinafter referred to simply as PSC-I beams) using steel brackets, and more particularly, to a structure and a method of connecting a plurality of PSC-I beams, separately precasted on the ground, to each other using steel brackets.
  • PSC-I beams I-type prestressed concrete beams
  • FIG. 1A is a side view of a two-span bridge with a conventional structure for connecting two I-type prestressed concrete beams 1 (PSC-I beams) to each other.
  • the two PSC-I beams 1, used in the conventional two-span bridge of FIG. 1A, are separately precasted on the ground. Thereafter, each of the PSC-I beams 1 is independently placed between a pier 2 and a pair of support grounds, which support both ends of the two-span bridge, to form a simple beam system. At this time, the two PSC-I beams 1 are connected to each other by only a concrete slab 16 which is constructed on the two PSC-I beams 1. Otherwise, the plurality of PSC-I beams 1 may be connected to each other by another conventional beam connecting structure, as shown in FIG. 1B.
  • each of PSC-I beams 1 is precasted, so that a plurality of reinforcing bars 17 are embedded in each of the PSC-I beams 1 while an end of each of the reinforcing bars 17 is exposed from an end of the PSC-I beam 1 to a predetermined distance. Thereafter, each of the PSC-I beams 1 are placed between the pair of support grounds and the piers 2. There is a predetermined space between ends of the two PSC-I beams 1 placed on the piers 2.
  • the reinforcing bars 17 exposed from an end of one of the PSC-I beams 1 are respectively coupled to the reinforcing bars 17 exposed from an end of a neighboring PSC-I beam 1.
  • concrete is filled in each of the predetermined space defined between the ends of the PSC-I beams 1 to form a concrete part 15.
  • the concrete slab 16 is, thereafter, integrally constructed on the PSC-I beams 1 and the concrete parts 15.
  • each of the PSC-I beams 1 has a role as the simple beam system. That is, an additional support bearing 3 is provided under each of both ends of the PSC-I beam 1 to support the PSC-I beams 1 on the pier 2 and the support grounds. Therefore, at least two support bearings 3 must be placed on the pier 2. At this time, ideally, a reaction force against a live load must be evenly applied to the two support bearings 3 on the pier 2.
  • one of the two support bearings 3 has a negative (-) reaction force, and the other support bearing 3 has an excessive positive (+) reaction force. Therefore, the support bearing 3, which has the excessive positive (+) reaction force, must have a larger capacity.
  • the conventional beam connecting structure imposes excessive constructing costs on users.
  • the concrete part 15 is filled in the space defined between the PSC-I beams.
  • a cold joint is undesirably generated on each of junctions of both ends of the concrete part 15 and the ends of the PSC-I beams 1. Therefore, a crack may be generated around the cold joint by the live load.
  • the PSC-I beams 1 are not firmly connected to each other. Thus, structural defect may be caused in the bridge with the conventional beam connecting structure.
  • an object of the present invention is to provide a structure and a method of connecting a plurality of PSC-I beams to each other using end plates and steel brackets which have higher structural durability, different from a conventional structure for connecting the plurality of PSC-I beams using only the reinforcing bars and concrete, so that the plurality of PSC-I beams are firmly connected to each other.
  • Another object of the present invention is to provide an structure and method of connecting the plurality of PSC-I beams, which has only one support bearing on each of piers to support the PSC-I beams, thus solving the disadvantages caused by using the plurality of support bearings in the prior art.
  • the present invention provides an structure for connecting a plurality of PSC-I beams, each having a sheath pipe therein, to each other.
  • the beam connecting structure includes an end plate mounted on each of both ends of each of the PSC-I beams, with a through hole provided on an upper portion of the end plate to correspond to the sheath pipe embedded in each of the PSC-I beams; a steel bracket integrally provided on the end plate to be perpendicular to the end plate, so that the steel brackets of the neighboring end plates of the PSC-I beams are aligned with each other while the PSC-I beams are arranged linearly; a bracket coupling plate to integrally couple the aligned steel brackets to each other; a bottom connecting plate provided on lower ends of the aligned steel brackets to connect the steel brackets to each other; a connecting sheath pipe provided between the PSC-I beams so that both ends of the connecting sheath pipe are respectively inserted into the through holes of the neighboring end plates of the PSC-
  • the present invention provides a method of connecting a plurality of PSC-I beams, each having a sheath pipe therein, to each other.
  • the beam connecting method includes mounting an end plate on each of both ends of each of the PSC-I beams, with a through hole provided on an upper portion of the end plate to correspond to the sheath pipe embedded in each of the PSC-I beams; providing integrally a steel bracket on the end plate to be perpendicular to the end plate; placing the PSC-I beams on a plurality of piers while the steel brackets of the neighboring end plates of the PSC-I beams are aligned with each other on a bottom connecting plate placed on a support bearing mounted on each of the plurality of piers; mounting the aligned steel brackets of the neighboring end plates of the PSC-I beams to the bottom connecting plate to connect the steel brackets to each other; mounting a bracket coupling plate to the aligned steel brackets to integrally couple the aligned steel brackets to each other;
  • FIG. 2 is a sectional view of one of a plurality of I-type prestressed concrete beams 1 (PSC-I beams) connected to each other with a structure for connecting the plurality of PSC-I beams, according to an embodiment of the present invention.
  • FIG. 3 is a partially broken perspective view of the PSC-I beam 1 of FIG. 2, in which a part around an end of the PSC-I beam 1 is shown.
  • each of the PSC-I beams, made of concrete has a sheath pipe 18 therein. That is, when the PSC-I beam 1 is produced, the sheath pipe 18 is previously embedded in the concrete.
  • the sheath pipe 18 receives therein a prestress strand.
  • the beam connecting structure of the present invention includes an end plate 4 which is mounted on at least one of both ends of each of the PSC-I beams 1.
  • a plurality of anchor bolts 7 are previously embedded in the concrete of at least one of both ends of each of the PSC-I beams 1, while each of the PSC-I beam 1 is precasted. Thereafter, the end plate 4 is fitted over ends of the plurality of anchor bolts 7. A nut 13 is, thereafter, tightened to each of the plurality of anchor bolts 7 to couple the end plate 4 to the end of the PSC-I beam 1.
  • two steel brackets 6 are integrally provided on each of the end plates 4 by welding to be perpendicular to the end plate 4.
  • a through hole 5 is provided on an upper portion of the end plate 4 to correspond to the sheath pipe 18 which is embedded in each of the PSC-I beams 1.
  • a plurality of bolt holes are provided on each of the steel brackets 6, so that the steel bracket 6 is coupled to a following bracket coupling plate 9 by a plurality of coupling bolts 10 and coupling nuts 10a which will be described later herein.
  • FIG. 4A is a side view showing a step for connecting the two PSC-I beams 1 of FIG. 2 to each other, in which the two PSC-I beams 1 are placed on a pier 2 while the two PSC-I beams 1 are arranged linearly.
  • FIG. 4B is a sectional view taken along the line A-A of FIG. 4A.
  • a support bearing 3 is provided on the pier 2 before the PSC-I beams 1 are placed over the pier 2.
  • a plurality of temporary support units 14 are provided around the support bearing 3 on the pier 2 to support the neighboring ends of the PSC-I beams 1 on the pier 2.
  • a bottom connecting plate 8 is placed on the support bearing 3.
  • the PSC-I beams 1, separately precasted on the ground are placed over the pier 2 while the neighboring ends of the PSC-I beams 1 are supported on the plurality of temporary support units 14.
  • the steel brackets 6 of the neighboring end plates 4 of the PSC-I beams 1 are aligned with each other on the bottom connecting plate 8.
  • the steel brackets 6 of the neighboring end plates 4 are mounted at lower ends thereof to the bottom connecting plate 8 by welding, so that the steel brackets 6 are connected to each other.
  • FIG. 5 is a side view showing a step for connecting the PSC-I beams 1 of FIG. 2 executed after the connecting process shown in FIG. 4A, in which a bracket connecting plate 9 and a connecting sheath pipe 19 are provided between the neighboring end plates 4 of the PSC-I beams 1.
  • the connecting sheath pipe 19 is provided between the PSC-I beams 1 so that both ends of the connecting sheath pipe 19 are respectively inserted into the through holes 5 which are respectively provided on the upper portions of the neighboring end plates 4 of the PSC-I beams 1, while the PSC-I beams are arranged linearly.
  • the connecting sheath pipe 19 By placing of the connecting sheath pipe 19, the sheath pipes 18 of the PSC-I beams 1 are connected to each other.
  • the two bracket coupling plates 9 are respectively provided on both sides of the aligned steel brackets 6 of the neighboring end plates 4.
  • the bracket coupling plates 9 and the aligned steel brackets 6 are integrally coupled to each other by the plurality of coupling bolts 10 and the plurality of nuts 10a. Therefore, the aligned steel brackets 6 are connected to each other by the bottom connecting plate 3, in addition to the bracket coupling plates 9.
  • FIG. 6A is a side view showing a state of the structure for connecting the PSC-I beams 1 after the connecting step shown in FIG. 5 is executed, in which the aligned steel brackets 6 are connected to each other by the bracket connecting plate 9.
  • FIG. 6B is a sectional view taken along the line B-B of FIG. 6A.
  • the aligned steel brackets 6 are also connected to each other by a plurality of longitudinal connecting bolts 12. That is, a bolt holding unit 11 is provided on an upper end of each of the steel brackets 6 of the PSC-I beams 1.
  • a connecting nut 21 is tightened to each of the longitudinal connecting bolts 12 while the longitudinal connecting bolt 12 passes through both the bolt holding units 11 of the aligned steel brackets 6.
  • the steel brackets 6 are more firmly connected to each other by the longitudinal connecting bolts 12 and the connecting nuts 21.
  • the bolt holding unit 11 is mounted to an upper support plate 22 which is provided on the upper end of each of the steel brackets 6.
  • FIG. 7 is a sectional view taken along the line C-C of FIG. 6B.
  • a prestress strand 20 is continuously inserted in the sheath pipes 18 and the connecting sheath pipe 19.
  • the strand 20 is continuously inserted in every sheath pipe 18 and connecting sheath pipe 19 through every span.
  • the strand 20 may be inserted in the sheath pipe 18 and the connecting sheath pipe 19, after a space defined between the PSC-I beams 1 receives concrete, which will be described later herein.
  • the strand 20, inserted in the every sheath pipe 18 and the connecting sheath pipe 19, is prestressed for transfer of prestressed force to the PSC-I beams 1, before or after a following concrete slab 16 is constructed on the PSC-I beams 1.
  • FIG. 8 is an exploded perspective view of the structure for connecting the above-mentioned PSC-I beams 1.
  • the steel brackets 6 of the PSC-I beams 1 are connected to each other, the concrete is filled in the space defined between the PSC-I beams 1 to form a concrete part 15.
  • the aligned steel brackets 6, the bracket coupling plate 9 and the connecting sheath pipe 19 are embedded in the concrete part 15.
  • FIG. 9 is a partially broken perspective view showing the beam connecting structure of FIG. 8 with the above-mentioned concrete part 15 filled in the space defined between the PSC-I beams 1.
  • FIG. 9 is a partially broken perspective view showing the beam connecting structure of FIG. 8 with the above-mentioned concrete part 15 filled in the space defined between the PSC-I beams 1.
  • FIG. 10 is a sectional view of a three-span bridge having the three PSC-I beams 1 connected to each other by the beam connecting structure of FIG. 9, in which the PC strand 20 arranged in the three PSC-I beams 1 is shown.
  • the temporary support units 14, provided under the neighboring ends of the PSC-I beams 1 are removed, after the concrete part 15 is filled in the space defined between the PSC-I beams 1.
  • the support bearing 3 on each of the piers 2 supports the bridge with the beam connecting structure of the present invention.
  • the plurality of PSC-I beams 1 are firmly connected to each other by the beam connecting structure of the present invention.
  • the bridge with the beam connecting structure forms a continuous beam system. Therefore, the bridge with the beam connecting structure reduces the positive moment generated in the PSC-I beams 1, thus reducing the size of the PSC-I beams 1 in comparison to a bridge with conventional beam connecting structure.
  • the beam connecting structure of the present invention has the plurality of longitudinal connecting bolts 12 to withstand tensile stress generated by the negative moment. Furthermore, as described above with reference to FIG. 7, the PC strand 20 is continuously arranged in the bridge. Therefore, the PC strand 20 also withstands the tensile stress.
  • the present invention provides a structure and a method of connecting a plurality of PSC-I beams to each other using steel brackets, bracket connecting plates, longitudinal connecting bolts, a connecting bottom plate and a concrete part, different from conventional structure for connecting the PSC-I beams using a plurality of reinforcing bars and a concrete part. That is, the beam connecting structure of the present invention more firmly connects the plurality of PSC-I beams to each other in comparison with the conventional beam connecting structure which cannot sufficiently connect the PSC-I beams to each other to form a simple beam system.
  • the beam connecting structure of the present invention has a prestress strand which is arranged through entire spans. Therefore, the prestress force is evenly transferred to a concrete part filled in a space defined between the PSC-I beams, in addition to the PSC-I beams.
  • the bridge with the beam connecting structure efficiently responds to a tensile stress generated by a negative moment.
  • the bridge with the beam connecting structure according to the present invention has sufficient strength to respond the negative moment generated in the space defined between the PSC-I beams. Therefore, the bridge with the beam connecting structure of the present invention completely forms a continuous beam system. Thus, both a size of each of the PSC-I beams and construction costs are reduced in comparison with the conventional beam connecting structure with the simple beam system.
  • the beam connecting structure of the present invention has only one support bearing on each of piers, different from the conventional beam connecting structure with at least two support bearings on each of the piers, the bridge is sufficiently supported on the piers.
EP04012158A 2003-12-23 2004-05-22 Konstruktion und Verfahren zur Verbindung von Type-I Spannbetonträgern unter Verwendung von Stahlkonsolen Withdrawn EP1548190A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020030095319A KR100621539B1 (ko) 2003-12-23 2003-12-23 스틸브라켓에 의한 피.에스.씨-ｉ빔의 연속결합방법 및 구조
KR2003095319 2003-12-23

Publications (2)

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EP1548190A2 true EP1548190A2 (de) 2005-06-29
EP1548190A3 EP1548190A3 (de) 2006-03-01

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EP04012158A Withdrawn EP1548190A3 (de) 2003-12-23 2004-05-22 Konstruktion und Verfahren zur Verbindung von Type-I Spannbetonträgern unter Verwendung von Stahlkonsolen

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US (1) US20050144890A1 (de)
EP (1) EP1548190A3 (de)
JP (1) JP2005180162A (de)
KR (1) KR100621539B1 (de)
CN (1) CN100417771C (de)

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CN104264795A (zh) * 2014-08-14 2015-01-07 山东万斯达建筑工业化研究院有限公司 一种梁柱柔性连接装置及其施工方法

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GB1417027A (en) * 1972-01-04 1975-12-10 Soum R Assemblies of prefabricated prestressed reinforced concrete elements
DE3114219A1 (de) * 1981-04-08 1982-11-04 Philipp Dipl.-Ing. 8014 Neubiberg Schreck Gelenkkonstruktion fuer den hoch- und brueckenbau

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102733305A (zh) * 2011-04-08 2012-10-17 江苏法尔胜新日制铁缆索有限公司 智能缆索用挡丝板
CN102733305B (zh) * 2011-04-08 2014-07-09 江苏法尔胜缆索有限公司 智能缆索用挡丝板
CN103938736A (zh) * 2014-05-04 2014-07-23 长沙远大住宅工业有限公司 预制叠合主次梁连接件及其连接结构
CN104264795A (zh) * 2014-08-14 2015-01-07 山东万斯达建筑工业化研究院有限公司 一种梁柱柔性连接装置及其施工方法

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KR20050064049A (ko) 2005-06-29
CN100417771C (zh) 2008-09-10
US20050144890A1 (en) 2005-07-07
JP2005180162A (ja) 2005-07-07
CN1637215A (zh) 2005-07-13
EP1548190A3 (de) 2006-03-01

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