CN102261040A - Windproof construction device with high bridge piers - Google Patents
Windproof construction device with high bridge piers Download PDFInfo
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- CN102261040A CN102261040A CN2011101085978A CN201110108597A CN102261040A CN 102261040 A CN102261040 A CN 102261040A CN 2011101085978 A CN2011101085978 A CN 2011101085978A CN 201110108597 A CN201110108597 A CN 201110108597A CN 102261040 A CN102261040 A CN 102261040A
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- exterior sheathing
- inner formword
- pier
- windproof
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Abstract
The invention discloses a windproof construction device with high bridge piers. The device comprises an inner mould board (3) and an outer mould board (2), wherein the inner mould board (3) and the outer mould board (2) are arranged on the inner side and the outer side of a steel reinforcement cage (5) on a pier stud carrying table (1), and the windproof construction device with the high bridge piers is characterized in that the outer mould board (2) is 1.3-1.8m higher than the inner mould board (3); and the inner side of the inner mould board (3) and the outer side of the outer mould board (2) are fixedly connected with windproof trusses. When in construction of the bridge piers under severe weather at high wind velocity, the device can enable the pouring quality of concrete and the strength of the bridge piers is high; and furthermore, the structure is simple, the construction is easy and the cost is low.
Description
Technical field
The present invention relates to a kind of bridge construction device, relate in particular to the windproof construction equipment of high pier under a kind of high wind speed.
Background technology
Most ellipse (ring) shape hollow pier forms that adopt of high pier.Its common job practices is: on the pier stud cushion cap, place cylindric double steel bar cage, and inside and outside at the tubular reinforcing cage, be equipped with contour inside and outside supporting template, so that in it encloses lining, carry out concrete pouring.Because the formwork integral of assembly unit is relatively poor, may deform under wind effect, even collapse.In addition, because the restriction of height, the casting and constructing of its high pier generally can not once be finished, so must step pouring.The mode of this section construction, if meet the severe weather conditions of high wind speed, after one section construction was finished, because of concrete condenses rapidly in strong wind, hardens, its surface was prone to honeycomb, pitted skin.So, easily cause the defective tightness that condenses of upper and lower two section concretes, make the high pier intensity of castable not reach requirement and produce certain potential safety hazard.Especially needing to pay close attention to, is the practical assurance of the personal security of carrying out the high pier construction under big wind speed bad weather.Therefore, carry out the high pier construction, be necessary to take corresponding, suitable draught exclusion device at Feng Qu.
Existing main draught exclusion device in the work progress of high pier is: directly set up all windproof enclosed structures again outside the outer supporting template of bridge pier, enclosed structure is fixed on the pier shaft of having built, is divided into partial arc shape verge board that is provided with according to prevailing wind direction and the annular verge board that is provided with along whole bridge pier periphery.All there is following deficiency in these two kinds of windproof methods: one, the setting of verge board, need at the pier shaft built-in connection, and the completion back easily produces certain influence to the bridge pier profile if processing is not in place.Two, before verge board was arranged on the bridge pier concrete and does not pour into, verge board and supporting template may be responsive to wind scorpion, needed to strengthen checking computations to guarantee the intensity under the structure least favorable state.Three, adding enclosed structure outside the outer supporting template of bridge pier has strengthened the construction works amount, has prolonged the construction period; If annular verge board is set is surrounded whole Bridge Pier Construction scene, constructing operation is all carried out in windproof enclosed structure, also there is the transportation that is not easy to construction material, increased the difficulty of construction, the delivery head and the distance of concrete pump have been increased, increase the power of pump, increased the shortcomings such as expense of construction.
In addition, existing Bridge Pier Construction is to prevent the bloated concrete of pouring into a mould, and influences the bridge pier quality, need reserve plastics PPC before the cast of bridge pier wall and manage, during cast in plastics PPC pipe by inner formword and the exterior sheathing of bridge pier being connected firmly to elongating bolt, thereby the harm that the bloated mould of minimizing brings.But because to elongating the rigidity and the limited amount of bolt, under the situation of high pier, still may fluid concrete take place the time because of concrete deadweight, expand and to cause the lateral pressure of bridge pier wall, and then cause the template unstability and occur expanding mould, spillage etc., influence the quality of fluid concrete; Make bridge pier take place to be offset and to reverse, the pier shaft surface produces ditch seam, faulting of slab ends, and it is sloping that pier shaft becomes, and reduces the intensity of bridge pier, influences the quality of bridge pier.And after the cast, the PPC hole influence of reserving on the bridge pier is attractive in appearance, also needs heavy perforations adding eye, has prolonged the duration like this.
Summary of the invention
Purpose of the present invention just provides a kind of high pier construction equipment, and when carrying out Bridge Pier Construction under the bad weather of high wind speed, this device can make concrete casting quality good, the intensity height of bridge pier; And it is simple in structure, and structure is easy, and cost is low.
The technical scheme that the present invention is adopted for its goal of the invention of realization is:
The windproof construction equipment of a kind of high pier is included in inner formword and exterior sheathing that the position, reinforcing cage medial and lateral on the pier stud cushion cap is provided with, and its design feature is: exterior sheathing exceeds inner formword 1.3-1.8m; Wind truss is all fixedlyed connected in the inboard of inner formword and the outside of exterior sheathing.
Compared with prior art, the invention has the beneficial effects as follows:
One, the outer field exterior sheathing of reinforcing cage is increased, the exterior sheathing of increasing internally plays the effect of keeping out the wind, and has guaranteed that cast-in-situ concrete hardens under low wind speed environment, has guaranteed the intensity of bridge pier.Simulated experiment is the result show: after exterior sheathing is increased 1.5m, the wind speed that can guarantee the extraneous wind speed of bridge pier concrete sclerosis and constructor's greater than 20m/s the scope of operation is below the strong breeze speed less than 8m/s, can guarantee that concrete formation is good, can guarantee constructor's safety again.
Two, apparatus of the present invention are provided with vertical wind truss in inside and outside template side and come inner formword and exterior sheathing are fixed.Wind truss has increased the bending rigidity of template and concrete surface normal direction greatly, has avoided causing the lateral pressure of bridge pier wall and then causing the template unstability expand mould, spillage phenomenon to occur because of deadweight, expansion when fluid concrete, guarantees the quality of concrete pier.And outer whole inside and outside template and the wind truss of bridge pier is linked to be integral body, like this when wind action, not only exterior sheathing self can dispersion force, and power can be reached the cushion cap face, thereby further strengthen the rigidity of template, play windproof effect, the wind-force of strong wind can not make template generation unstability, flexing, thereby guarantees the intensity and the quality of cast bridge pier.
Three, apparatus of the present invention are by the intensity of steel structure truss enhancing template, and than whole secondary enclosed structure, it is simple in structure, and difficulty of construction is little, and the construction period is short, and cost is low; And reducing the wind speed of pouring practice face by the height that increases exterior sheathing, the wind resistance effect is obvious, has also reduced windproof cost effectively.
Above-mentioned exterior sheathing passes through bolt by constituting with contour bottom of inner formword and the top that exceeds inner formword between the upper and lower part.
Like this, only need install one section template again additional and make it exceed inner formword get final product on existing exterior sheathing, it is easy to make apparatus of the present invention install, implement.
Above-mentioned reinforcing cage top cross is connected with dismountable to pull bar, and the end of pull bar is fixed on the exterior sheathing.
At the reinforcing cage top along the bridge pier horizontally set to drawing dismountable pull bar, the reinforcing cage at concrete to be cast position and exterior sheathing and wind truss are held together, strong wind comes can reduce the swing of reinforcing cage temporarily, reduction further improves the quality of cast-in-situ concrete bridge pier to not solidifying concrete destruction.Simultaneously, the constructor can link to each other safety belt when the interior construction of pier tube more easily with pull bar, help constructor's operation and safety.
The concrete composition of above-mentioned wind truss is: by connecting radial bars on inner formword or the exterior sheathing, the outer end connecting ring of radial bars constitutes a transverse layers to bar, passes through the continuous formation of vertical support bar truss skeleton between the hoop bar of each transverse layers; On the diagonal of the arbitrary rectangle frame on the truss skeleton, all be connected with crossbar.
Such trussed construction can fully guarantee the rigidity of inside and outside template, guarantees the quality of cast-in-situ concrete.
The present invention is further detailed explanation below in conjunction with accompanying drawing and concrete embodiment.
Description of drawings
Fig. 1 is the plan structure schematic diagram of the embodiment of the invention.
Fig. 2 is the A-A sectional drawing of Fig. 1.
The specific embodiment
Embodiment
Fig. 1,2 illustrates, a kind of specific embodiment of the present invention is: the windproof construction equipment of a kind of high pier, be included in inner formword 3 and exterior sheathing 2 that the position, reinforcing cage 5 medial and lateral on the pier stud cushion cap 1 is provided with, it is characterized in that: described exterior sheathing 2 exceeds inner formword 31.3-1.8m; All fixedly connected with the outside of exterior sheathing 2 in the inboard of inner formword 3.
Fig. 2 illustrates, and exterior sheathing 2 passes through bolt by constituting with contour bottom of inner formword 3 and the top that exceeds inner formword 3 between the upper and lower part.
Fig. 1,2 illustrates, and promptly vertical with the bridge pier long side direction direction of reinforcing cage 5 top cross is connected with dismountable to pull bar 8, and the end of pull bar 8 is fixed on the exterior sheathing 3.
The concrete composition of wind truss is: by connecting radial bars 9 on inner formword 3 or the exterior sheathing 2, the outer end connecting ring of radial bars 9 constitutes a transverse layers to bar 12, passes through vertical support bar 10 continuous formation truss skeletons between the hoop bar 12 of each transverse layers; On the diagonal of the arbitrary rectangle frame on the truss skeleton, all be connected with crossbar 7.
Claims (4)
1. the windproof construction equipment of high pier is included in inner formword (3) and exterior sheathing (2) that reinforcing cage (5) position, medial and lateral on the pier stud cushion cap (1) is provided with, and it is characterized in that: described exterior sheathing (2) exceeds inner formword (3) 1.3-1.8m; Wind truss is all fixedlyed connected in the inboard of inner formword (3) and the outside of exterior sheathing (2).
2. the windproof construction equipment of a kind of high pier as claimed in claim 1 is characterized in that: described exterior sheathing (2) passes through bolt by bottom and the top formation that exceeds inner formword (3) contour with inner formword (3) between the upper and lower part.
3. the windproof construction equipment of a kind of high pier as claimed in claim 1 is characterized in that: described reinforcing cage (5) top cross is connected with dismountable to pull bar (8), and the end of pull bar (8) is fixed on the exterior sheathing (3).
4. the windproof construction equipment of a kind of high pier as claimed in claim 1, it is characterized in that: the concrete composition of described wind truss is: go up connection radial bars (9) by inner formword (3) or exterior sheathing (2), the outer end connecting ring of radial bars (9) is to bar (12), constitute a transverse layers, pass through the continuous formation of vertical support bar (10) truss skeleton between the hoop bar (12) of each transverse layers; On the diagonal of the arbitrary rectangle frame on the truss skeleton, all be connected with crossbar (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110108597 CN102261040B (en) | 2011-04-28 | 2011-04-28 | Windproof construction device with high bridge piers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110108597 CN102261040B (en) | 2011-04-28 | 2011-04-28 | Windproof construction device with high bridge piers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102261040A true CN102261040A (en) | 2011-11-30 |
| CN102261040B CN102261040B (en) | 2013-05-22 |
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ID=45007858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110108597 Expired - Fee Related CN102261040B (en) | 2011-04-28 | 2011-04-28 | Windproof construction device with high bridge piers |
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| Country | Link |
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| CN (1) | CN102261040B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817322A (en) * | 2012-08-10 | 2012-12-12 | 中铁大桥局集团第六工程有限公司 | Shrinkable internal model without draw bar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100666704B1 (en) * | 2006-03-07 | 2007-01-09 | 비비엠코리아(주) | Monolithic bridge stand of steel pipe girder |
| JP2008169543A (en) * | 2007-01-05 | 2008-07-24 | Mitsubishi Heavy Ind Ltd | Bridge |
| CN101429752A (en) * | 2007-11-05 | 2009-05-13 | 中交一航局第一工程有限公司 | Pier column prefabrication splicing building technology |
| CN101446062A (en) * | 2008-12-26 | 2009-06-03 | 中铁大桥局股份有限公司 | Reinforced concrete bridge pier column structure |
| CN202081382U (en) * | 2011-04-28 | 2011-12-21 | 西南交通大学 | Wind-resisting construction equipment for high bridge pier |
-
2011
- 2011-04-28 CN CN 201110108597 patent/CN102261040B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100666704B1 (en) * | 2006-03-07 | 2007-01-09 | 비비엠코리아(주) | Monolithic bridge stand of steel pipe girder |
| JP2008169543A (en) * | 2007-01-05 | 2008-07-24 | Mitsubishi Heavy Ind Ltd | Bridge |
| CN101429752A (en) * | 2007-11-05 | 2009-05-13 | 中交一航局第一工程有限公司 | Pier column prefabrication splicing building technology |
| CN101446062A (en) * | 2008-12-26 | 2009-06-03 | 中铁大桥局股份有限公司 | Reinforced concrete bridge pier column structure |
| CN202081382U (en) * | 2011-04-28 | 2011-12-21 | 西南交通大学 | Wind-resisting construction equipment for high bridge pier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817322A (en) * | 2012-08-10 | 2012-12-12 | 中铁大桥局集团第六工程有限公司 | Shrinkable internal model without draw bar |
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| Publication number | Publication date |
|---|---|
| CN102261040B (en) | 2013-05-22 |
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Granted publication date: 20130522 Termination date: 20160428 |