CN103210148A - Truss structure having an open-section upper chord member and a production method for the same, and a truss bridge using the truss structure having an open-section upper chord member and a method for constructing the same - Google Patents
Truss structure having an open-section upper chord member and a production method for the same, and a truss bridge using the truss structure having an open-section upper chord member and a method for constructing the same Download PDFInfo
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- CN103210148A CN103210148A CN2011800467244A CN201180046724A CN103210148A CN 103210148 A CN103210148 A CN 103210148A CN 2011800467244 A CN2011800467244 A CN 2011800467244A CN 201180046724 A CN201180046724 A CN 201180046724A CN 103210148 A CN103210148 A CN 103210148A
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- upper chord
- section upper
- open section
- construction thing
- lattice construction
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D6/00—Truss-type bridges
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
- E04C3/294—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete of concrete combined with a girder-like structure extending laterally outside the element
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- 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
- E01D2101/268—Composite concrete-metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0486—Truss like structures composed of separate truss elements
- E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0486—Truss like structures composed of separate truss elements
- E04C2003/0495—Truss like structures composed of separate truss elements the truss elements being located in several non-parallel surfaces
Abstract
The present invention relates to a method for producing the truss structure having the open-section upper chord member and to a truss bridge using the truss structure having the open-section upper chord member and also to a method for constructing the same. The present invention relates to a truss structure having an open-section upper chord member adapted to economize on steel materials and to improve the efficiency of truss bridge construction, by constructing truss bridges by using a truss structure for supporting truss bridges, wherein the open-section upper chord member of the truss structure is constituted in the shape of an upward-opening letter "U" so as to allow filling with concrete, and a steel material which is provided inside the open-section upper chord member is in tension.
Description
Technical field
The present invention relates to a kind of trussed bridge, more specifically, relate to lattice construction thing with open section upper chord and preparation method thereof, and the trussed bridge that utilizes the lattice construction thing with open section upper chord with and job practices, the open section upper chord of the lattice construction thing of sub-truss bridge is constituted " U " font of being opened on top in construction during trussed bridge, fill concrete therein, and the lattice construction thing construction trussed bridge that is tensioned of the steel that utilize the inside be arranged on the open section upper chord, thereby, save steel, and can improve the application property of trussed bridge.
Background technology
Generally, trussed bridge is the bridge form that can be useful in the middle long span of 50-200M, is the extremely high structural form of section efficient that all members are mainly resisted axial force.
But, utilize steel plate to constitute the existing trussed bridge of four limit sections, because need block steel plate, arrange section inside reinforcement material, weld each limit, connecting elements, manufacturing gusset plate and processing diagonal brace end, therefore the very complicated and very difficult manufacturing of manufacturing engineering, cause increase in man-hour, fabricating cost to rise and the economy reduction with this, thereby be difficult to the advantage of the outstanding trussed bridge of performance structure.
Summary of the invention
The present invention considers described existing problems point and proposition, its purpose is, a kind of lattice construction thing with open section upper chord and preparation method thereof is provided, and the trussed bridge that utilizes the lattice construction thing with open section upper chord with and job practices, the process that is welded on the open section upper chord of being opened on top by diagonal brace that the end is cut off by straight line and montant becomes simple, and when improving the make efficiency of lattice construction thing, can change cross dimensions (can't change cross dimensions at the closed upper chord of the section that is constituted by steel pipe), therefore, the economic effect of design bridge is good, and, can increase profile height or amplitude at the open section upper chord in each place, thereby can waste material when the size of open section upper chord becomes big and concrete can be filled into the inside of open section upper chord, can promote section intensity thus.
Another object of the present invention is to, a kind of lattice construction thing with open section upper chord and preparation method thereof is provided, and the trussed bridge that utilizes the lattice construction thing with open section upper chord with and job practices, by carrying out tensioning at the lower chord of the open section upper chord of the lattice construction thing that is installed on the place, inside between the both side ends place and the span central portion lattice construction thing between both side ends place and each the inner place and the connector that is connected and fixed on described lower chord in conjunction with steel, thereby can improve the stressed holding capacity of tension section, and, at the lower chord of the lattice construction that is installed on inner place be connected and fixed on the connector fill concrete of described lower chord and can increase the stressed holding capacity of compression section.
Another object of the present invention is to, a kind of lattice construction thing with open section upper chord and preparation method thereof is provided, and the trussed bridge that utilizes the lattice construction thing with open section upper chord with and job practices, by at the lower chord of the lattice construction thing that is installed on inner place and be connected and fixed on the connector fill concrete of described lower chord, thereby can increase the stressed holding capacity of compression section.
Lattice construction thing with open section upper chord of the present invention is characterized in that, comprising: a plurality of lower chords, and it is formed by the steel pipe of hollow circular section; Diagonal brace, it is the hollow circular section, and a side end forms curved surface in order to be connected and fixed on described lower chord, and end side is cut off by straight line in order to be close to and is fixed in the open section upper chord; Montant, it is the hollow circular section, and a side end forms curved surface in order to be connected and fixed on described lower chord, and end side is cut off by straight line in order to be close to and is fixed in the open section upper chord; The open section upper chord, it is connected and fixed on the end side that described diagonal brace and montant are cut off by straight line, and forms " U " font opened on top so that fill concrete and synthetic with the steel section.
Preparation method with lattice construction thing of open section upper chord of the present invention, it is characterized in that, comprising: the lower chord of the span central portion between both side ends place and inner place and between inner place and the connector that is connected and fixed on described lower chord carry out tensioning and form the stressed step of compression section in conjunction with the steel of tensioned portion; The step of the gripper shoe of filling part is set at the lower chord that is installed on inner place and the connector that is connected and fixed on described lower chord; The stud that the inside setting of " U " font open section upper chord of being opened on top is connected with anti-shear concrete and the step of stirrup; Be provided for inserting the step of the protecting pipe of steel in the inside that is positioned at the open section upper chord of internally putting top; For the both sides at described steel form the closed interval, the step that plate and concrete perfusion are cured is set in the inside of described open section upper chord; Behind described concrete curing, in conjunction with steel, by the closed interval steel are carried out the step of 1 tensioning in the inside of described protecting pipe then; A plurality of lower chords that will comprise described tensioned portion and filling part are installed in the node support portion and the step that is connected and fixed; The step that is cured at described filling part fill concrete; On described lower chord, be connected and fixed the step of a side end of the diagonal brace that end side cut off by straight line; On described lower chord, be connected and fixed the step of a side end of the montant that end side cut off by straight line; Install and fix the step of open section upper chord in the end side of described diagonal brace and montant.
Utilization of the present invention has the trussed bridge of the lattice construction thing of open section upper chord, it is characterized in that, comprising: the place, end, it arranges relative to each other in order to support the lattice construction thing that is provided with " U " font open section upper chord, and inner place, it is arranged between the place, end; The lattice construction thing is provided with " U " font open section upper chord that is installed on place, described end and inner place; First base plate, at the superstructure reinforcing bar of the open section upper chord of the lattice construction thing on top, described inner place and be provided for protecting pipe in conjunction with steel, concrete perfusion is cured and after burying described protecting pipe, reinforcing bar and being fixed on the stirrup of open end upper chord, carries out tensioning at described protecting pipe in conjunction with steel then; Second base plate, distributing bar forms the closed interval with the both sides at first base plate above the span central portion lattice construction thing between place, described end and inner place and between each inner place, then, concrete perfusion is cured and buries reinforced steel and be fixed on the stirrup of open end upper chord; Concrete, it is poured into described closed interval and is cured.
Utilization of the present invention has the method for the lattice construction thing construction trussed bridge of open section upper chord, it is characterized in that, comprising: the step of the lattice construction thing that is made of " U " font open section upper chord being installed in place, end and the place, inside between the place, described end of both sides; The steel that are combined in the protecting pipe of described lattice construction thing are carried out 2 tensionings by the closed interval step; On the open section upper chord that described steel are tensioned, be provided for forming the step of the mould of first base plate; At described mould inside distributing bar, and be provided for step in conjunction with the protecting pipe of steel; Be cured at the die perfusion concrete and bury described reinforcing bar, protecting pipe and be fixed in the stirrup of open section upper chord, dismantle mould then and form the first base plate step; In the protecting pipe of described first base plate step in conjunction with steel; The step of using anchoring device to carry out tensioning by the closed interval steel that are combined in the protecting pipe of described first base plate; Be provided for forming the mould of second base plate above the lattice construction thing between place, described end and inner place and each inner place in order to form the step of closed interval in the both sides of described first base plate; At the internal structure reinforcing bar of described mould, and concrete perfusion is cured and buries described reinforcing bar and be fixed on the stirrup of open section upper chord, dismantles mould then and forms the step of second base plate; After described closed interval dismounting tensioning apparatus, the step that is cured at described closed interval concrete perfusion.
Beneficial effect
According to the present invention, montant by will being close to the open section upper chord of being opened on top and the end side straight line of diagonal brace cut off the processing of the end curved surface that reduces montant and diagonal brace, thereby simplify manufacturing process and lower fabricating cost, also block and weld the diagonal brace end easily, therefore, improve the make efficiency of lattice construction thing, and can change the cross dimensions of the open section upper chord that can not be useful in steel pipe, so it is more economical that bridge design becomes, and, adjust profile height or amplitude by the open section upper chord in each interval, place, thereby can not waste the material of the open section upper chord that increases, and pass through at the inside of open section upper chord fill concrete, and raising section rigidity and section intensity, and simplify work progress and improve efficiency of construction, save the steel of open section upper chord simultaneously and can improve economy.
According to the present invention, carry out tensioning by between tension force is bigger in the lattice construction thing both side ends place and the inner place and the span central portion lower chord between each inner place or the inside that is connected and fixed on the connector of described lower chord in conjunction with steel, thereby need not to increase member thickness and can be with the section stress limitation in permissible value, and the lower chord by the top, place, inside that compressive force is bigger in the lattice construction thing or the connector fill concrete that is connected and fixed on described lower chord steel and concrete are shared support the compression section stressed, thereby the section stress limitation is respond well built in permissible value construction economy with interior the time.
According to the present invention, first base plate is formed at the top by the lattice construction thing that is tensioned at steel, prevent that laterally be full of cracks takes place base plate owing to the tension force that takes place towards the bridge direction of principal axis, and complete the synthesizing that keeps lattice construction thing and first base plate, thereby promote the durability of base plate, increase the service life, and because steel and the concrete that is filled in the lattice construction thing are not exposed to the outside, thereby can construct the beautiful trussed bridge of outward appearance.
Description of drawings
Fig. 1 is separation stereogram of the present invention.
Fig. 2 is the construction profile of Fig. 1.
Fig. 3 is the normal cross sectional drawing of Fig. 1.
Fig. 4 is cross-sectional side view of the present invention.
Fig. 5 to Fig. 8 is the procedure chart that utilizes lattice construction thing construction trussed bridge of the present invention.
Among the figure:
100: lattice construction thing, 110: lower chord, 120: diagonal brace, 130: montant, 140: the open section upper chord, 150: tensioned portion, 160: filling part, 170: steel, 180: stirrup, 200: trussed bridge, 210,210 ': place, end, 220: inner place, 230: the first base plates, 240: the second base plates.
The specific embodiment
Below, the embodiment that present invention will be described in detail with reference to the accompanying.Fig. 1 is separation stereogram of the present invention, and Fig. 2 is the construction profile of Fig. 1, and Fig. 3 is the normal cross sectional drawing of Fig. 1, and Fig. 4 is cross-sectional side view of the present invention.
Lattice construction thing with open section upper chord of the present invention comprises: a plurality of lower chords 110, and it is formed by the steel pipe of hollow circular section; Diagonal brace 120, it is the hollow circular section, and a side end forms curved surface in order to be connected and fixed on described lower chord 110, and end side is cut off by straight line in order to be close to and is fixed in described upper chord 140; Montant 130, it is the hollow circular section, and a side end forms curved surface in order to be connected and fixed on described lower chord 110, and end side is cut off by straight line in order to be close to and is fixed in open section upper chord 140; Open section upper chord 140, it is connected and fixed on the end side of being cut off by straight line of described diagonal brace 120 and montant 130, and form " U " font opened on top so that fill concrete and synthetic with the steel section, below, this is further described.
In order to connect described lower chord 110, between the lower chord 110 preferably by connector 110 ' be connected and fixed.
The present invention also comprises: tensioned portion 150, place, described end 210,210 ' and inner place 220 between, the lower chord 110 of the lattice construction thing 100 of span central portion between described each inner place 220 and to be connected and fixed on the connector 110 of described lower chord 110 ' form the tension section in conjunction with steel 152 carry out tensioning stressed; Filling part 160 is at the lower chord 110 of the lattice construction thing 100 that is installed on described inner place 220 and be connected in the connector 110 ' fill concrete of described lower chord 110 and to form the compression section stressed.
Possess form anchor 151 and steel 152 in described tensioned portion 150, described form anchor be arranged at 220 tops, described inner place lattice construction thing 100 lower chord 110 and be connected and fixed on the connector 110 of described lower chord 110 ' in one inside, described steel are incorporated into the anchor hole 151a of described form anchor 151 and are tensioned.
Described filling part 160 possesses gripper shoe 161 and filler opening 162, described gripper shoe be arranged at 220 tops, described inner place lattice construction thing 100 lower chord 110 and be connected and fixed on the connector 110 of described lower chord 110 ' in one inside, described filler opening run through in case the lower chord 110 of the lattice construction thing 100 on 220 tops, described inner place and be connected and fixed on the connector 110 of described lower chord 110 ' in a fill concrete.
The lower chord 110 of the lattice construction thing 100 that is provided with described gripper shoe 161 and be connected and fixed on the connector 110 of described lower chord 110 ' inside preferably with the fixing a plurality of studs 163 of radiation.
Further comprise in the inside of the open section upper chord 140 of the described lattice construction thing 100 that is installed on inner place 220 in conjunction with the protecting pipe 170 of steel 170 '.
Comprise further that in the inside of described open section upper chord 140 ratio open section upper chord 140 more outstanding stirrups 180 are so that shearing resistance connects first base plate 230 and second base plate 240.
In addition, utilization has the trussed bridge of the lattice construction thing of open section upper chord, comprise: place, end 210,210 ', it arranges relative to each other in order to support the lattice construction thing 100 that is provided with " U " font open section upper chord 140, and inner place 220, its be arranged at place, end 210,210 ' between; Lattice construction thing 100 is provided with and is installed on place, described end 210,210 ' and " U " font open section upper chord 140 in inner place 220; First base plate 230, at the superstructure reinforcing bar 231 of the open section upper chord 140 of the lattice construction thing 100 on 220 tops, described inner place and be provided for protecting pipe 233 in conjunction with steel 232, concrete perfusion is cured and after burying described protecting pipe 233, reinforcing bar 231 and being fixed on the stirrup 180 of open end upper chord 140, carries out tensioning at described protecting pipe 233 in conjunction with steel 232 then; Second base plate 240, place, described end 210,210 ' and inner place 220 between and above the span central portion lattice construction thing 100 between each inner place 220 distributing bar form closed interval S ' with the both sides at first base plate 230, then, concrete perfusion is cured and buries reinforced steel 241 and be fixed on the stirrup 180 of open end upper chord 140; Concrete, it is poured into described closed interval S ' and is cured.
Then, manufacturing process of the present invention and the work progress that constitutes as mentioned above is described.
At first, shown in Fig. 5 to 8, with the length that meets set trussed bridge arrange both side ends place 210,210 ' and be arranged on place, described end 210,210 ' between a plurality of inner place 220, be installed on place, described end 210,210 ' and the lattice construction thing 100 in inner place 220 thereby make.
Described lattice construction thing 100 is followingly to assemble, namely the lower chord 110 that installation is formed by the steel pipe of hollow circular section on each node support portion (omitting diagram) that predetermined space arranges is assembled under unstress state temporarily, a side end of being close to the diagonal brace 120 of hollow circular section and montant 130 then on described lower chord 110 namely forms a side end of curved surface and assembles temporarily, and in the end side that the end side of described diagonal brace 120 and montant 130 is namely cut off by straight line the open section upper chord of being opened on top 140 is installed and is assembled temporarily.
Herein, for the lower chord 110 that is mounted on described each node support portion, between lower chord 110, can be connected and fixed connector 110 ', also can be at described connector 110 ' an assemble side end that forms curved surface of diagonal brace 120 and montant 130 temporarily.
At this moment, before interim assembling is with the lattice construction thing between connector 110 ' connection lower chord 110, in the lower chord 110 of described lattice construction thing 100, strained the stressed place, end 210,210 of section ' and inner place 220 between and between each inner place 220, be the lower chord 110 of span central portion or the connector 110 that is connected in described lower chord 110 ' inside the form anchor 151 of tensioned portion 150 is set, in order to strengthen described form anchor 151, lower chord 110 or connector 110 ' internal fixation ribs 151b strengthened.
If described lower chord 110 and be connected in the connector 110 of described lower chord ' internal fixation form anchor 151, then under the state of the anchor hole 151a of described form anchor 151 in conjunction with the steel 152 of steel wire or steel bar, by weld the fixing connector 110 that constitutes the lower chord 110 of tensioned portion 150 and be connected in described lower chord ', use tensioning apparatus (omitting diagram) to carry out tensioning then.Since lower chord 110 or be fixed in connector 110 ' the form anchor 151 of inside and the tension force of the steel 152 that ribs 15b shares supporting steel wire or steel bar, therefore can keep the tension force of the steel 152 of steel wire or steel bar.
Be installed on the lower chord 110 of described lattice construction thing 100 in inner place 220 or connector 110 ' generation of being connected in described lower chord 110 owing to the compression section that dead load causes is stressed, before interim assembling is with the lattice construction thing between connector 110 ' connection lower chord 110, the lower chord 110 that is installed on described inner place 220 or the connector 110 that is connected in described lower chord 110 ' inside the gripper shoe 161 of filling part 160 is set, for strengthening described gripper shoe 161, gripper shoe 161 and lower chord 110 or connector 110 ' internal fixation ribs 161a strengthened.
Herein, gripper shoe 161 and be connected in the connector 110 of described gripper shoe ' a plurality of studs 163 of internal fixation, described stud 163 preferred radiations are fixed.
By described process, a plurality of lower chords 110 and be connected in the connector 110 of described lower chord ' above the contact of connection one side end face, and the diagonal brace 120 that end side is cut off by straight line, lower chord 110 and be connected in the connector 110 of described lower chord ' the contact of top connection one side end face, and the montant 130 that end side is cut off by straight line and temporarily assembling, the lattice construction thing 100 with predetermined length that tensioned portion 150 and filling part 160 assemble temporarily is set and integrally formed when then, the end side of being cut off by straight line that is fixed by welding in described montant 130 and diagonal brace 120 is installed " U " font open section upper chord of being opened on top 140.
Filling part 160 fill concretes in the inside of described lattice construction thing 100 are cured, at this moment, by run through the connector 110 that is formed on lower chord 110 and is fixed on described lower chord ' filler opening 162 fill concretes, up to be filled to the concrete of filling from described filler opening 162 from the hole 162 that spues ' till spuing.
When described filling part 160 fill concretes, strengthen the also bed knife of supported plate 161 with ribs 161a, therefore, when completed lattice construction thing 100 systems are subjected to dead load and external force, can support concrete compressive force, the concrete that is filled in described filling part 160 is firmly fixed at the stud 163 that has arranged, finishes the manufacturing of lattice construction thing 100 simultaneously.
More than, process to described filling part 160 fill concretes had been described before lattice construction thing 100 is installed in each place, but, when capacity great when the steel of lattice construction thing 100 or lifting gear is insufficient, be not installed in each place under the state of fill concrete earlier at filling part 160, and form after the bridge structure system of whole lattice construction thing 100 fill concrete and can make it to solidify.
And, be installed on described each place 210,210 ', the internal fixation stud 140 of " U " shape open section upper chord 140 of 220 lattice construction thing 100 ' and be used for protecting pipe 170 ' and a plurality of stirrups 180 in conjunction with steel wire 170, described steel wire 170 arranges plate 170a in conjunction with being arranged at, described stirrup 180 holds 170 ' time of described protecting pipe, preferably be fixed as more outstandingly so that shearing resistance connects upper chord 140 and first base plate 230 and second base plate 240 than upper chord 140, concrete perfusion is cured in the inside of described open section upper chord 140.
At this moment, preferably described protecting pipe 170 ' the both sides, end form closed interval S,, after protecting pipe 170 ' in conjunction with steel wire 170, with tensioning apparatus (omitting diagram) steel wire 170 is carried out 1 tensioning at closed interval S, thereby make lattice construction thing 100 by described closed interval S.
Herein, the described plate 170a that arranges can be embedded in the concrete that is poured into closed interval S, and, after being cured, the concrete of the inside that is poured into described open section 140 can dismantle with mould.
1 tensile force of described steel wire 170 is preferably as follows adjusts, namely before one connects described lattice construction thing 100, to be controlled to be in the upper chord section bearing capacity owing to the compression section that tensioning open section upper chord 140 produces is stressed, simultaneously in each place 210,210 ', 220 lattice construction things 100 are installed and when forming the unitary construction system, can suppress to be filled in the level of degree of concrete generation tensioning be full of cracks of inside of open section upper chord 140 on the top in inner place 220.
Utilization be installed on described each place 210,210 ', during 220 lattice construction thing, 100 construction trussed bridge 200, the closed interval S of the steel wire 170 by being extruded with described lattice construction thing 100 with 2 described steel wires 170 of tensioning of tensioning apparatus (omitting diagram) after, the S fill concrete is cured in described closed interval.
2 tensile forces of described steel wire 170 are preferably as follows adjust, i.e. perfusion base plate 230,240 concrete and when solidifying on described lattice construction thing 100 can suppress to be filled in the level of degree of concrete generation tensioning be full of cracks of upper chord 140 inside on the top in inner place 220.
When the concrete of the closed interval S that is filled in described open section upper chord 140 has solidified, the mould that forms first base plate 230 is set on described lattice construction thing 100, at the internal structure reinforcing bar 231 of described mould and be provided for protecting pipe 233 in conjunction with the steel 232 of steel wire or steel bar, then, be cured at the mould inside concrete perfusion and bury described reinforcing bar 231, protecting pipe 233 underground and be fixed on the stirrup 180 of open section upper chord 140, thereby form first base plate 230.
If formed first base plate 230, then the dismantle mould of first base plate 230, the mould of concrete second base plate 240 that forms filling part 160 tops is set to form closed interval S with first base plate 230 under this state, in described mould behind the distributing bar 241, be cured in order to bury described reinforcing bar 241 underground and be fixed on the stirrup 180 of open section upper chord 140 at the mould inside concrete perfusion, thereby form second base plate 240.
After before forming described second base plate 240, reaching, at the protecting pipe 233 that is embedded in described first base plate 230 in conjunction with steel 232, then at the inside of closed interval S ' tensioning apparatus (omitting diagram) the described steel 232 of tensioning, behind the mobile tensioning apparatus of described closed interval S ', S ' concrete perfusion is cured in described closed interval.
More than, though with reference to accompanying drawing and preferred embodiment the present invention has been described, but that all terms of this specification and claims scope shall not be construed as usually is employed, defined term on the dictionary, should be interpreted as implication and the concept of technological thought according to the invention.The embodiment that this manual is put down in writing and diagram constitute only one embodiment of the invention, can not replace technological thought of the present invention, therefore are interpreted as in not breaking away from claim scope of the present invention various equipollents and variation being arranged.
Claims (14)
1. the lattice construction thing with open section upper chord is characterized in that, comprising:
A plurality of lower chords, it is formed by the steel pipe of hollow circular section;
Diagonal brace, it is the hollow circular section, and a side end forms curved surface in order to be connected and fixed on described lower chord, and end side is cut off by straight line in order to be close to and is fixed in the open section upper chord;
Montant, it is the hollow circular section, and a side end forms curved surface in order to be connected and fixed on described lower chord, and end side is cut off by straight line in order to be close to and is fixed in the open section upper chord;
The open section upper chord, it is connected and fixed on the end side that described diagonal brace and montant are cut off by straight line, and forms " U " font opened on top so that fill concrete and synthetic with the steel section.
2. the lattice construction thing with open section upper chord according to claim 1 is characterized in that, is connected and fixed the connector for a side end that forms curved surface of temporary fixed diagonal brace and montant between described a plurality of lower chords.
3. the lattice construction thing with open section upper chord according to claim 1 is characterized in that, comprising:
Tensioned portion is carried out tensioning in conjunction with the steel of steel wire or steel bar and to form the tension section stressed at the lower chord of the lattice construction thing of the span central portion between place, end and the inner place, between described each inner place and the connector that is connected and fixed on described lower chord;
Filling part is at the lower chord of the lattice construction thing that is installed on described inner place and be connected and fixed on the connector fill concrete of described lower chord and to form the compression section stressed.
4. the lattice construction thing with open section upper chord according to claim 3 is characterized in that described tensioned portion comprises:
Form anchor and ribs, its be arranged at top, described inner place the lattice construction thing lower chord and be connected and fixed on one inside in the connector of described lower chord;
The steel of steel wire or steel bar, it is incorporated into the anchor hole of described form anchor and is tensioned.
5. the lattice construction thing with open section upper chord according to claim 3 is characterized in that described filling part comprises:
Gripper shoe and ribs, its be arranged at top, described inner place the lattice construction thing lower chord and be connected and fixed on one inside in the connector of described lower chord;
Filler opening, it is run through so that at the lower chord of the lattice construction thing on top, described inner place and be connected and fixed on a fill concrete in the connector of described lower chord.
6. the lattice construction thing with open section upper chord according to claim 5 is characterized in that, at the lower chord of the lattice construction thing that is provided with described gripper shoe and the connector that is connected and fixed on described lower chord with the fixing a plurality of studs of radiation.
7. the lattice construction thing with open section upper chord according to claim 3 is characterized in that, further comprises for the protecting pipe in conjunction with steel in the inside of the open section upper chord of the described lattice construction thing that is installed on inner place.
8. the lattice construction thing with open section upper chord according to claim 1 is characterized in that, further comprises the more outstanding stirrup of ratio open section upper chord so that shearing resistance connects first base plate and second base plate in the inside of described open section upper chord.
9. the preparation method with lattice construction thing of open section upper chord is characterized in that, comprising:
The lower chord of the span central portion between both side ends place and inner place and between inner place and the connector that is connected and fixed on described lower chord carry out tensioning and form the stressed step of compression section in conjunction with the steel of tensioned portion;
The step of the gripper shoe of filling part is set at the lower chord that is installed on inner place and the connector that is connected and fixed on described lower chord;
The stud that the inside setting of " U " font open section upper chord of being opened on top is connected with anti-shear concrete and the step of stirrup;
Be provided for inserting the step of the protecting pipe of steel in the inside that is positioned at the open section upper chord of internally putting top;
For the both sides at described steel form the closed interval, the step that plate and concrete perfusion are cured is set in the inside of described open section upper chord;
Behind described concrete curing, in conjunction with steel, by the closed interval steel are carried out the step of 1 tensioning in the inside of described protecting pipe then;
A plurality of lower chords that will comprise described tensioned portion and filling part are installed in the node support portion and the step that is connected and fixed;
The step that is cured at described filling part fill concrete;
On described lower chord, be connected and fixed the step of a side end of the diagonal brace that end side cut off by straight line;
On described lower chord, be connected and fixed the step of a side end of the montant that end side cut off by straight line;
Install and fix the step of open section upper chord in the end side of described diagonal brace and montant.
10. the manufacture method with lattice construction thing of open section upper chord according to claim 9 is characterized in that, is connected and fixed connector between described lower chord.
11. the manufacture method with lattice construction thing of open section upper chord according to claim 9 is characterized in that, further is included in the step of filling before the described concrete at a plurality of studs of internal fixation of lower chord.
12. the manufacture method with lattice construction thing of open section upper chord according to claim 9 is characterized in that, before the lattice construction thing is installed on each place at described filling part fill concrete.
13. a utilization has the trussed bridge of the lattice construction thing of open section upper chord, it is characterized in that, comprising:
The place, end, it arranges relative to each other in order to support the lattice construction thing that is provided with " U " font open section upper chord, and inner place, and it is arranged between the place, end;
The lattice construction thing is provided with " U " font open section upper chord that is installed on place, described end and inner place;
First base plate, at the superstructure reinforcing bar of the open section upper chord of the lattice construction thing on top, described inner place and be provided for protecting pipe in conjunction with steel, concrete perfusion is cured and after burying described protecting pipe, reinforcing bar and being fixed on the stirrup of open end upper chord, carries out tensioning at described protecting pipe in conjunction with steel then;
Second base plate, distributing bar forms the closed interval with the both sides at first base plate above the span central portion lattice construction thing between place, described end and inner place and between each inner place, then, concrete perfusion is cured and buries reinforced steel and be fixed on the stirrup of open end upper chord;
Concrete, it is poured into described closed interval and is cured.
14. a utilization has the method for the lattice construction thing construction trussed bridge of open section upper chord, it is characterized in that, comprising:
The step of the lattice construction thing that is made of " U " font open section upper chord being installed in place, end and the place, inside between the place, described end of both sides;
The steel that are combined in the protecting pipe of described lattice construction thing are carried out 2 tensionings by the closed interval step;
On the open section upper chord that described steel are tensioned, be provided for forming the step of the mould of first base plate;
At described mould inside distributing bar, and be provided for step in conjunction with the protecting pipe of steel;
Be cured at the die perfusion concrete and bury described reinforcing bar, protecting pipe and be fixed in the stirrup of open section upper chord, dismantle mould then and form the first base plate step;
In the protecting pipe of described first base plate step in conjunction with steel;
The step of using anchoring device to carry out tensioning by the closed interval steel that are combined in the protecting pipe of described first base plate;
Be provided for forming the mould of second base plate above the lattice construction thing between place, described end and inner place and each inner place in order to form the step of closed interval in the both sides of described first base plate;
At the internal structure reinforcing bar of described mould, and concrete perfusion is cured and buries described reinforcing bar and be fixed on the stirrup of open section upper chord, dismantles mould then and forms the step of second base plate;
After described closed interval dismounting tensioning apparatus, the step that is cured at described closed interval concrete perfusion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100093079A KR101030128B1 (en) | 2010-09-27 | 2010-09-27 | Truss structures having open box section in upper chords and construction method of truss bridges |
| KR10-2010-0093079 | 2010-09-27 | ||
| PCT/KR2011/007030 WO2012044013A2 (en) | 2010-09-27 | 2011-09-23 | Truss structure having an open-section upper chord member and a production method for the same, and a truss bridge using the truss structure having an open-section upper chord member and a method for constructing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103210148A true CN103210148A (en) | 2013-07-17 |
| CN103210148B CN103210148B (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180046724.4A Expired - Fee Related CN103210148B (en) | 2010-09-27 | 2011-09-23 | Truss structure having an open-section upper chord member and a production method for the same, and a truss bridge using the truss structure having an open-section upper chord member and a method for constructing the same |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR101030128B1 (en) |
| CN (1) | CN103210148B (en) |
| SG (1) | SG189118A1 (en) |
| WO (1) | WO2012044013A2 (en) |
Cited By (1)
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|---|---|---|---|---|
| CN103669194A (en) * | 2013-12-29 | 2014-03-26 | 长安大学 | Continuous rigid frame bridge based on steel truss-concrete slab composite beam |
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| KR101321699B1 (en) * | 2012-10-19 | 2013-10-28 | 주현규 | Composite truss beam using double tube type pipe member and bridge therewith |
| KR101339609B1 (en) * | 2013-01-21 | 2014-01-07 | 한우물중공업(주) | Truss girder of steel box |
| US9422680B2 (en) | 2014-04-14 | 2016-08-23 | Guido FURLANETTO | Deck |
| KR101581380B1 (en) * | 2015-03-30 | 2015-12-30 | 우경기술주식회사 | Hybrid truss girder |
| KR101797988B1 (en) * | 2017-02-22 | 2017-12-13 | 브릿지테크놀러지(주) | Truss through bridge and the construction method thereof |
| KR102342316B1 (en) * | 2019-11-25 | 2021-12-22 | 한국철도기술연구원 | An super- and sub- integral monolithic elevated structure with longitudinal backbone superstructure |
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- 2011-09-23 CN CN201180046724.4A patent/CN103210148B/en not_active Expired - Fee Related
- 2011-09-23 SG SG2013022629A patent/SG189118A1/en unknown
- 2011-09-23 WO PCT/KR2011/007030 patent/WO2012044013A2/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2012044013A3 (en) | 2012-06-21 |
| WO2012044013A2 (en) | 2012-04-05 |
| CN103210148B (en) | 2015-04-29 |
| SG189118A1 (en) | 2013-05-31 |
| KR101030128B1 (en) | 2011-04-20 |
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