CN103243659A - Cantilever hanging bracket and using method thereof - Google Patents
Cantilever hanging bracket and using method thereof Download PDFInfo
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- CN103243659A CN103243659A CN2013101894613A CN201310189461A CN103243659A CN 103243659 A CN103243659 A CN 103243659A CN 2013101894613 A CN2013101894613 A CN 2013101894613A CN 201310189461 A CN201310189461 A CN 201310189461A CN 103243659 A CN103243659 A CN 103243659A
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Abstract
The invention relates to a cantilever hanging bracket and a using method thereof. The cantilever hanging bracket comprises a main truss, a traveling mechanism and an anchoring device. The main truss comprises two diamond-shaped truss bodies arranged symmetrically in a horizontal mode. Each diamond-shaped truss body comprises an upper chord, a lower chord, a front chord and a rear chord, wherein the front end of the upper chord and the upper end of the front chord are connected through a front pitch point, the rear end of the upper chord and the upper end of the rear chord are connected through an upper pitch point, the lower end of the rear chord and the rear end of the lower chord are connected through a rear pitch point, the front end of the lower chord and the lower end of the front chord are connected through a lower pitch point, and a column is connected between the upper pitch point and the lower pitch point. A rear horizontal truss sheet is connected between the columns of the two diamond-shaped truss bodies, a front upper cross beam is connected between the front pitch points of the two diamond-shaped truss bodies, the upper chords incline towards the front lower direction, and inclined angles of the upper chords are 15-25 degrees. The cantilever hanging bracket and the using method of the cantilever hanging bracket can achieve generality of a hanging basket main truss and the cantilever hanging bracket, and the cantilever hanging bracket is low in gravity center, good in stability and reasonable in stress.
Description
Technical field
The present invention relates to the bridge construction construction equipment, be specifically related to a kind of cantilever suspension bracket and using method thereof.
Background technology
Along with the development of bridge construction cause, for increasing the span of continuous rigid frame, the steel reinforced concrete bondbeam is widely adopted in continuous rigid frame, in work progress, need use suspended casting suspended basket and cantilever suspension bracket, but because existing suspended casting suspended basket and cantilever suspension bracket can not be general, make construction cost cost height.In addition, the main couple of existing suspended casting suspended basket and cantilever suspension bracket adopts rhombus truss or triangular truss more, rhombus truss and triangular truss all have advantage of simple structure, but the compression member of rhombus truss (that is: preceding chord member) is longer, after adopting rhombus suspension bracket lifting load, the center of gravity of whole suspension bracket is higher relatively, and the subsidiary stress that the construction error of perpendicularity produces is bigger, makes safety can not get ensureing; Though triangular truss can overcome the deficiency of above-mentioned rhombus truss, the weight of triangular truss is lighter, except the afterbody anchoring, also needs to strengthen ballast, is subjected to certain restriction so use.
Summary of the invention
The purpose of this invention is to provide a kind of cantilever suspension bracket, can realize the general of main truss cradle frame and cantilever suspension bracket, and it is low to have center of gravity, good stability, more reasonable stress, and can reduce cost.
Another object of the present invention provides a kind of using method of cantilever suspension bracket.
Cantilever suspension bracket of the present invention comprises main couple, is arranged on the walking mechanism of main couple bottom and the anchor device that is arranged on the main couple rear end; Described main couple comprises two rhombus truss that are symmetrical set, described rhombus truss comprises upper chord, lower chord, preceding chord member and back chord member, the front end of upper chord is connected by front nodal point with the upper end of preceding chord member, the rear end of upper chord is connected by last node with the upper end of back chord member, the lower end of back chord member is connected by posterior nodal point with the rear end of lower chord, the front end of lower chord is connected by lower node with the lower end of preceding chord member, is connected with column between last node and lower node; Between the column of two rhombus truss, connect a back crossyard sheet, top rail before the connection one between the front nodal point of two rhombus truss, described upper chord tilts to the front lower place, and the downward tilt angle alpha of upper chord is 15 ~ 25 °.
The downward tilt angle alpha of described upper chord is 15 °.
Described anchor device comprises the back anchor beam that is arranged on the posterior nodal point top and the back anchor dowel that is embedded in the concrete, back anchor beam and back anchor dowel anchor connection.
Described walking mechanism comprises rail beam, is embedded in the track dowel in the concrete, the back hook that the upper end is connected with posterior nodal point, the front fulcrum that the upper end is connected with lower node and the draw bar that is connected with front fulcrum, rail beam and the anchor connection of track dowel, back hook colludes and is hung on the rail beam, and front fulcrum is supported on the rail beam.
Below rail beam, be arranged at intervals with a plurality of track bearing beams.
The left and right sides at front fulcrum is respectively arranged with front leg strut, and the upper end of two described front leg struts is connected with lower node by screw rod respectively.
Described upper chord, lower chord, preceding chord member and back chord member adopt steel plate to be welded respectively.
Described front nodal point, posterior nodal point, last node and lower node adopt steel plate to be welded respectively.
The using method of cantilever suspension bracket of the present invention, its step is as follows:
Step 1: before the concrete cast, pre-buried track dowel and back anchor dowel in concrete;
Step 2: after the concrete cast, assembly unit rhombus truss, and with the posterior nodal point of rhombus truss with back anchor beam anchor on the anchor dowel of back, with back crossyard sheet two rhombus truss are connected into integral body, and preceding top rail are installed;
Step 3: during the Hanging Basket cast, at preceding top rail suspension rod is installed, in the concreting suspension rod is being installed, topotype platform, the interior external mold platform of Hanging Basket is installed, carry out the Hanging Basket cantilever;
Step 4: during the lifting of steel case beam, remove the component that are used for Hanging Basket, at preceding top rail the lifting jack is installed, run to cantilever end lifting steel case beam.
Beneficial effect of the present invention:
(1) combine the advantage of rhombus truss and English truss, it is low to have center of gravity, good stability, make the more reasonable stress of compression rod (chord member namely) simultaneously, when the identical load of lifting, because the stressed of preceding chord member reduces, can reduce bar cross section during design, reduce cost;
(2) after the front end suspension centre descended, behind the whole suspension bracket lifting load, center of gravity was lower, and the subsidiary stress that the construction error of perpendicularity produces is littler, safer;
(3) realize the general of main truss cradle frame and cantilever suspension bracket, saved construction cost;
(4) the maximum lift heavy of monolithic rhombus truss is 120t, bearing capacity height, assembly unit flexibly;
(5) front end of cantilever suspension bracket has the operating space of 3m.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is along the sectional drawing of I-I line among Fig. 1;
Fig. 3 is along the sectional drawing of II-II line among Fig. 1;
Fig. 4 is along the sectional drawing of III-III line among Fig. 1.
The specific embodiment
Now by reference to the accompanying drawings the present invention is described in further detail:
Cantilever suspension bracket as shown in Figure 1, Figure 2, Figure 3 and Figure 4 comprises main couple, is arranged on the walking mechanism of main couple bottom and the anchor device that is arranged on the main couple rear end; Described main couple comprises two rhombus truss that are symmetrical set, described rhombus truss comprises upper chord 1a, lower chord 1c, preceding chord member 1b, back chord member 1d, front nodal point 3a, posterior nodal point 3c, goes up node 3d and lower node 3b, upper chord 1a, lower chord 1c, preceding chord member 1b and back chord member 1d adopt steel plate to be welded respectively, and front nodal point 3a, posterior nodal point 3c, last node 3d and lower node 3b adopt steel plate to be welded respectively.The front end of upper chord 1a is connected with pin by front nodal point 3a with the upper end of preceding chord member 1b, the rear end of upper chord 1a is connected with pin by last node 3d with the upper end of back chord member 1d, the lower end of back chord member 1d is connected with pin by posterior nodal point 3c with the rear end of lower chord 1c, the front end of lower chord 1c is connected with pin by lower node 3b with the lower end of preceding chord member 1b, is connected with column 1e between last node 3d and lower node 3b; And between the column 1e of two rhombus truss, connecting a back crossyard sheet 12, the effect of back crossyard sheet 12 is to connect two rhombus truss, guarantees lateral stability.Top rail 4 connect one between the front nodal point 3a of two rhombus truss before, described upper chord 1a tilts to the front lower place, and the downward tilt angle alpha of upper chord 1a is 15 °.
As shown in Figure 2, described anchor device comprises the back anchor beam 2 that is arranged on posterior nodal point 3c top and the back anchor dowel 10 that is embedded in the concrete, back anchor beam 2 adopts the D32 finish rolling deformed bar with back anchor dowel 10 anchor connections, back anchor dowel 10, for the cantilever suspension bracket provides counter-force.
As shown in Figures 2 and 3, described walking mechanism comprises rail beam 6, is embedded in the track dowel 9 in the concrete, the back hook 5 that the upper end is connected with posterior nodal point 3c, the front fulcrum 8 that the upper end is connected with lower node 3b and the draw bar 11 that is connected with front fulcrum 8, rail beam 6 and 9 anchor connections of track dowel, counter-force is provided when walking for truss, back hook 5 colludes and is hung on the rail beam 6, and front fulcrum 8 is supported on the rail beam 6.
As shown in Figure 1, below rail beam 6, be arranged at intervals with a plurality of track bearing beams 7, be used for adjusting the bridge floor discrepancy in elevation.
As shown in Figure 3, be respectively arranged with front leg strut 13 in the left and right sides of front fulcrum 8, and the upper end of two described front leg struts 13 is connected with lower node 3b by screw rod respectively.When front leg strut 13 effects are that concrete casting is annotated, by adjusting the screw rod on the front leg strut 13, the stressed of front fulcrum 8 transferred on the front leg strut 13, prevented rail beam 6 stress deformations.
In the above-mentioned cantilever suspension bracket, the downward tilt angle alpha of described upper chord 1a is 20 °, or is 25 ° of formation additional embodiments.
The using method of cantilever suspension bracket of the present invention, its step is as follows:
Step 1: before the concrete cast, pre-buried track dowel 9 and back anchor dowel 10 in concrete;
Step 2: after the concrete cast, assembly unit rhombus truss, and with the posterior nodal point 3c of rhombus truss with back anchor beam 2 anchors on back anchor dowel 10, with back crossyard sheet 12 two rhombus truss are connected into integral body, and preceding top rail 4 are installed;
Step 3: during the Hanging Basket cast, at preceding top rail 4 suspension rod is installed, in the concreting suspension rod is being installed, topotype platform, the interior external mold platform of Hanging Basket is installed, carry out the Hanging Basket cantilever;
Step 4: during the lifting of steel case beam, remove the component that are used for Hanging Basket, at preceding top rail 4 the lifting jack is installed, run to cantilever end lifting steel case beam.
Claims (9)
1. a cantilever suspension bracket comprises main couple, is arranged on the walking mechanism of main couple bottom and the anchor device that is arranged on the main couple rear end; Described main couple comprises two rhombus truss that are symmetrical set, described rhombus truss comprises upper chord (1a), lower chord (1c), preceding chord member (1b) and back chord member (1d), the front end of upper chord (1a) is connected by front nodal point (3a) with the upper end of preceding chord member (1b), the rear end of upper chord (1a) is connected by last node (3d) with the upper end of back chord member (1d), the lower end of back chord member (1d) is connected by posterior nodal point (3c) with the rear end of lower chord (1c), the front end of lower chord (1c) is connected by lower node (3b) with the lower end of preceding chord member (1b), is connected with column (1e) between last node (3d) and lower node (3b); Between the column (1e) of two rhombus truss, connect a back crossyard sheet (12), top rail (4) before between the front nodal point (3a) of two rhombus truss, connecting one, it is characterized in that: described upper chord (1a) tilts to the front lower place, and the downward tilt angle alpha of upper chord (1a) is 15 ~ 25 °.
2. cantilever suspension bracket according to claim 1, it is characterized in that: the downward tilt angle alpha of described upper chord (1a) is 15 °.
3. cantilever suspension bracket according to claim 1 and 2, it is characterized in that: described anchor device comprises the back anchor beam (2) that is arranged on posterior nodal point (3c) top and is embedded in back anchor dowel (10), back anchor beam (2) and anchor dowel (10) anchor connection afterwards in the concrete.
4. cantilever suspension bracket according to claim 1 and 2, it is characterized in that: described walking mechanism comprises rail beam (6), is embedded in the track dowel (9) in the concrete, the back hook (5) that the upper end is connected with posterior nodal point (3c), the front fulcrum (8) that the upper end is connected with lower node (3b) and the draw bar (11) that is connected with front fulcrum (8), rail beam (6) and track dowel (9) anchor connection, back hook (5) colludes and is hung on the rail beam (6), and front fulcrum (8) is supported on the rail beam (6).
5. cantilever suspension bracket according to claim 1 and 2 is characterized in that: be arranged at intervals with a plurality of track bearing beams (7) in the below of rail beam (6).
6. cantilever suspension bracket according to claim 4 is characterized in that: be respectively arranged with front leg strut (13) in the left and right sides of front fulcrum (8), and the upper end of two described front leg struts (13) is connected with lower node (3b) by screw rod respectively.
7. cantilever suspension bracket according to claim 1 and 2 is characterized in that: described upper chord (1a), lower chord (1c), preceding chord member (1b) and back chord member (1d) adopt steel plate to be welded respectively.
8. cantilever suspension bracket according to claim 1 and 2 is characterized in that: described front nodal point (3a), posterior nodal point (3c), go up node (3d) and lower node (3b) adopts steel plate to be welded respectively.
9. as the using method of the arbitrary described cantilever suspension bracket of claim 1 to 8, its step is as follows:
Step 1: before the concrete cast, pre-buried track dowel (9) and back anchor dowel (10) in concrete;
Step 2: after the concrete cast, assembly unit rhombus truss, and with the posterior nodal point (3c) of rhombus truss with back anchor beam (2) anchor on back anchor dowel (10), with back crossyard sheet (12) two rhombus truss are connected into integral body, and preceding top rail (4) are installed;
Step 3: during the Hanging Basket cast, at preceding top rail (4) suspension rod is installed, in the concreting suspension rod is being installed, topotype platform, the interior external mold platform of Hanging Basket is installed, carry out the Hanging Basket cantilever;
Step 4: during the lifting of steel case beam, remove the component that are used for Hanging Basket, at preceding top rail (4) the lifting jack is installed, run to cantilever end lifting steel case beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310189461.3A CN103243659B (en) | 2013-05-21 | 2013-05-21 | Cantilever hanging bracket and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310189461.3A CN103243659B (en) | 2013-05-21 | 2013-05-21 | Cantilever hanging bracket and using method thereof |
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| CN103243659A true CN103243659A (en) | 2013-08-14 |
| CN103243659B CN103243659B (en) | 2015-02-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669217A (en) * | 2013-11-21 | 2014-03-26 | 中建三局建设工程股份有限公司 | Hanging basket with rear fulcrum and transverse moving method for integral range replacement of hanging basket with rear fulcrum |
| CN105110207A (en) * | 2015-08-07 | 2015-12-02 | 中交路桥华南工程有限公司 | Hoisting system of object with asymmetric structure |
| CN114346599A (en) * | 2021-12-22 | 2022-04-15 | 江苏玖沐精工装备科技有限公司 | Concentric machining process for hanging basket main truss production line |
| WO2024037042A1 (en) * | 2022-08-15 | 2024-02-22 | 中铁九桥工程有限公司 | Construction method for erecting inter-section whole-section steel truss using girder erection crane |
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| CN101591890A (en) * | 2008-06-05 | 2009-12-02 | 中铁大桥局股份有限公司 | Hanging device of large-scale over-long box girder |
| JP2011032841A (en) * | 2009-08-06 | 2011-02-17 | Zenitaka Corp | Construction method of concrete bridge and moving working device used by method of construction |
| JP2011202406A (en) * | 2010-03-25 | 2011-10-13 | Zenitaka Corp | Method of assembling and disassembling movable working device for bridge |
| CN102758404A (en) * | 2012-07-19 | 2012-10-31 | 中铁十六局集团第一工程有限公司 | Front fulcrum hanging basket travelling device of spatial V-shaped cable-stayed bridge |
| CN102797227A (en) * | 2012-09-03 | 2012-11-28 | 贵州路桥集团有限公司 | Construction method adopting inverted triangular obliquely-crawling hanging basket |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101591890A (en) * | 2008-06-05 | 2009-12-02 | 中铁大桥局股份有限公司 | Hanging device of large-scale over-long box girder |
| JP2011032841A (en) * | 2009-08-06 | 2011-02-17 | Zenitaka Corp | Construction method of concrete bridge and moving working device used by method of construction |
| JP2011202406A (en) * | 2010-03-25 | 2011-10-13 | Zenitaka Corp | Method of assembling and disassembling movable working device for bridge |
| CN102758404A (en) * | 2012-07-19 | 2012-10-31 | 中铁十六局集团第一工程有限公司 | Front fulcrum hanging basket travelling device of spatial V-shaped cable-stayed bridge |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669217A (en) * | 2013-11-21 | 2014-03-26 | 中建三局建设工程股份有限公司 | Hanging basket with rear fulcrum and transverse moving method for integral range replacement of hanging basket with rear fulcrum |
| CN103669217B (en) * | 2013-11-21 | 2017-12-05 | 中建三局建设工程股份有限公司 | A kind of rear-support hanging basket and its entirety change width method for traversing |
| CN105110207A (en) * | 2015-08-07 | 2015-12-02 | 中交路桥华南工程有限公司 | Hoisting system of object with asymmetric structure |
| CN114346599A (en) * | 2021-12-22 | 2022-04-15 | 江苏玖沐精工装备科技有限公司 | Concentric machining process for hanging basket main truss production line |
| WO2024037042A1 (en) * | 2022-08-15 | 2024-02-22 | 中铁九桥工程有限公司 | Construction method for erecting inter-section whole-section steel truss using girder erection crane |
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| CN103243659B (en) | 2015-02-11 |
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