CN201190263Y - Reinforced concrete tension beam - Google Patents
Reinforced concrete tension beam Download PDFInfo
- Publication number
- CN201190263Y CN201190263Y CNU2008200983718U CN200820098371U CN201190263Y CN 201190263 Y CN201190263 Y CN 201190263Y CN U2008200983718 U CNU2008200983718 U CN U2008200983718U CN 200820098371 U CN200820098371 U CN 200820098371U CN 201190263 Y CN201190263 Y CN 201190263Y
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- crossbeam
- tendon
- steel
- plate
- slot
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Abstract
The utility model discloses a reinforced concrete tension beam which belongs to a force-transferring beam applying prestress through a pretensioning method, and solves the problems of the prior steel beam that the deformation amount is large, and the cost is high. The reinforced concrete tension beam comprises a crossbeam made of reinforced concrete, face protecting steel plates are arranged before and after the crossbeam, a rectangular tendon through slot is arranged in the middle section of a center line along the length direction of the crossbeam, two symmetrical square grooves are respectively arranged at the top and the bottom of the tendon through slot of the front face protecting steel plate for fixing the prestressed tendon positioning board, the same round hole is distributed on a center line along the length direction of the prestressed tendon positioning board, the round hole is communicated with the tendon through slot of the crossbeam, and the prestressed tendon is connected with a jack after passing through the tendon through slot of the crossbeam and the round hole of the prestressed tendon positioning board. The utility model has the advantages that the crossbeam increases the bend section moment, improves the bending resistance ability of components, and effectively reduces the prestress loss caused by the deformation of the crossbeam; and the cost is low and is about one third of the cost of the steel beam.
Description
Technical field
The utility model relates to a kind of steel concrete stretch-drawing beam, and particularly a kind of bridge engineering pre-tensioning system applies prestressed force transferring structure, belongs to construction engineering technical field.
Background technology
The bridge engineering pre-tensioning system applies in the prestressed concrete component construction, and stretch-drawing beam is the important component that the stretching force of presstressed reinforcing steel is passed to bearing bracket.As the temporory structure of auxiliary construction, technically satisfy deformation requirements, cost saving is the important indicator of examination stretch-drawing beam as far as possible economically.Mostly stretch-drawing beam of the prior art is to form with i iron, channel-section steel, rail and steel plate welding that the deficiency that this stretch-drawing beam exists is the cost of manufacture height, deflection is big when using.
Summary of the invention
The utility model provides a kind of bending rigidity big, steel concrete stretch-drawing beam with low cost at the deficiency that prior art exists.
The technical solution of the utility model comprises crossbeam, described crossbeam is a steel concrete, the forward and backward face of crossbeam has the mask steel plate, there is logical rectangle to wear the muscle groove along crossbeam length direction center line stage casing, upper and lower 2 square draw-in grooves that respectively are provided with symmetry respectively that preceding mask steel plate is worn muscle groove position fix the presstressed reinforcing steel location-plate, along being distributed with identical circular hole on the presstressed reinforcing steel location-plate length direction center line, this circular hole communicates with the muscle groove of wearing of crossbeam, and presstressed reinforcing steel is connected with jack after passing the circular hole of wearing muscle groove and presstressed reinforcing steel location-plate of crossbeam.
The utility model compared with prior art, its technique effect is: 1, adopt steel concrete, strengthened the bending resistant section square, improved the bending resistance of member, suppressed excessive deformation, reduced the prestressed loss that produces because of beam deformation effectively; 2, with low cost, be about 1/3rd of steel crossbeam expense; 3, concrete component is convenient to deposit and the repeated use of cutting to than steel component good endurance.
Description of drawings
Fig. 1 is a stereogram of the present utility model;
Fig. 2 is the A-A cross-sectional view of Fig. 1;
Fig. 3 is the enforcement illustration of accompanying drawing 1.
Among the figure: 1-crossbeam, 2-wear muscle groove, 3-mask steel plate, 4-presstressed reinforcing steel location-plate, 5-draw-in groove, 6-jack, 7-presstressed reinforcing steel, 8-force-transmitting pole.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in detail.
Extremely shown in Figure 2 as Fig. 1, the technical solution of the utility model comprises crossbeam, described crossbeam is a steel concrete, before the crossbeam, there is the mask steel plate back, there is logical rectangle to wear the muscle groove along crossbeam length direction center line stage casing, before the mask steel plate wear muscle groove position on, 2 square draw-in grooves that respectively are provided with symmetry down respectively fix the presstressed reinforcing steel location-plate, along being distributed with identical circular hole on the presstressed reinforcing steel location-plate length direction center line, this circular hole communicates with the muscle groove of wearing of crossbeam, and presstressed reinforcing steel is connected with jack after passing the circular hole of wearing muscle groove and presstressed reinforcing steel location-plate of crossbeam.
At the prefabricated scene of prestressing force beam slab, utilize existing mould of building as crossbeam concrete 1 with prefabricated table top and construction formwork, the centre is worn muscle groove 2 and is adopted the 2mm iron sheet to be welded into the cuboid tubular of the 3cm * 99cm of both ends open, tamp fine sand in the tube, after two ends use the clay shutoff real, tube is placed in crossbeam central authorities, fixes with the spot welding of beam body cage of reinforcement.The steel concrete crossbeam is pressed: the making of steel concrete stretch-drawing beam is finished in the technological process that mask steel plate, mounting template, concreting were placed and wear the muscle groove drum, installed and fixed to cleaning table top, colligation beam body reinforcing bar.After treating that the crossbeam concrete is finished curing time, use hanging device: precasting yard straddle truck or mobile crane, handling is to the operating position.Location-plate adopts the steel plate of 2cm to be made into the rectangle of 15cm * 110cm, holes with drilling machine in the position by presstressed reinforcing steel on the location-plate cross central line, passes for presstressed reinforcing steel, plays the effect of restriction prestressing force position.
This steel concrete crossbeam is before making, and the maximum load that should apply according to the prestressing force of precast beam design is calculated reinforcing bar configuration and the beam body concrete intensity determined in the crossbeam.It is accurate to make every effort to size during making, will guarantee the vertical of the forward and backward mask steel plate of beam body especially.Location-plate can be according to the radical of all kinds of girder plate prestress, the difference of position, and the processing polylith is so that change when using.
As shown in Figure 3: crossbeam is placed on the force-transmitting pole termination, and presstressed reinforcing steel is connected with jack after passing crossbeam and presstressed reinforcing steel location-plate, and the pre-tensile stress that crossbeam produces presstressed reinforcing steel when applying prestressing force passes to force-transmitting pole and bears.
Claims (1)
1, a kind of steel concrete stretch-drawing beam, comprise crossbeam, it is characterized in that described crossbeam is a steel concrete, before the crossbeam, there is the mask steel plate back, there is logical rectangle to wear the muscle groove along crossbeam length direction center line stage casing, before the mask steel plate wear muscle groove position on, 2 square draw-in grooves that respectively are provided with symmetry down respectively fix the presstressed reinforcing steel location-plate, along being distributed with identical circular hole on the presstressed reinforcing steel location-plate length direction center line, this circular hole communicates with the muscle groove of wearing of crossbeam, and presstressed reinforcing steel is connected with jack after passing the circular hole of wearing muscle groove and presstressed reinforcing steel location-plate of crossbeam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200983718U CN201190263Y (en) | 2008-05-23 | 2008-05-23 | Reinforced concrete tension beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200983718U CN201190263Y (en) | 2008-05-23 | 2008-05-23 | Reinforced concrete tension beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201190263Y true CN201190263Y (en) | 2009-02-04 |
Family
ID=40334421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200983718U Expired - Fee Related CN201190263Y (en) | 2008-05-23 | 2008-05-23 | Reinforced concrete tension beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201190263Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286974A (en) * | 2011-06-22 | 2011-12-21 | 中铁大桥局股份有限公司 | Reinforced concrete comb anchor |
| CN101666069B (en) * | 2009-09-09 | 2013-01-23 | 中建三局建设工程股份有限公司 | Construction technology for stretching notch by cast-in-situ prestress box beam |
| CN107574827A (en) * | 2017-09-15 | 2018-01-12 | 北京建筑大学 | A kind of novel small-sized box drain reinforcement system and its construction method |
-
2008
- 2008-05-23 CN CNU2008200983718U patent/CN201190263Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666069B (en) * | 2009-09-09 | 2013-01-23 | 中建三局建设工程股份有限公司 | Construction technology for stretching notch by cast-in-situ prestress box beam |
| CN102286974A (en) * | 2011-06-22 | 2011-12-21 | 中铁大桥局股份有限公司 | Reinforced concrete comb anchor |
| CN107574827A (en) * | 2017-09-15 | 2018-01-12 | 北京建筑大学 | A kind of novel small-sized box drain reinforcement system and its construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20130523 |