CN110714591B - Armor seam device suitable for whole terrace of prestressing force - Google Patents
Armor seam device suitable for whole terrace of prestressing force Download PDFInfo
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- CN110714591B CN110714591B CN201910880967.6A CN201910880967A CN110714591B CN 110714591 B CN110714591 B CN 110714591B CN 201910880967 A CN201910880967 A CN 201910880967A CN 110714591 B CN110714591 B CN 110714591B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 114
- 239000010959 steel Substances 0.000 claims abstract description 114
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 239000004567 concrete Substances 0.000 abstract description 33
- 210000002435 tendon Anatomy 0.000 abstract description 10
- 239000011513 prestressed concrete Substances 0.000 description 13
- 238000010276 construction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
- E04F15/14—Construction of joints, e.g. dividing strips
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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The embodiment of the invention discloses an armor seam device suitable for a prestressed integral terrace, which comprises an armor seam and a prestressed steel beam penetrating through the armor seam, wherein the armor seam comprises two oppositely-arranged angle steels with an expansion joint left in the middle, a cover plate lapped on the upper surfaces of the two angle steels is detachably arranged on the expansion joint, and a steel plate which is parallel to the cover plate is arranged above the angle steel on one side of the cover plate; a force transmission rod hole is formed in the middle of the armor seam, a steel pipe sleeve is sleeved in the force transmission rod hole, a force transmission rod penetrating through the armor seam is arranged inside the steel pipe sleeve, and two cross support rods for cross supporting the steel pipe sleeve are arranged on the steel pipe sleeve; a prestress tensioning hole is also formed in the armor seam, a reserved sleeve is arranged in the prestress tensioning hole, and a prestress steel bundle is sleeved in the reserved sleeve; the prestressed tensioning holes are reserved on the armor seams, so that prestressed tendons smoothly pass through the armor seams; the cover plate is added, so that the concrete edges and corners at the gap are prevented from being damaged by using load; the armor seam device is suitable for the prestressed integral terrace.
Description
Technical Field
The embodiment of the invention relates to the technical field of ground armor seam devices, in particular to an armor seam device suitable for a prestressed integral terrace.
Background
The concrete terrace meets the bearing capacity requirement, and the user has requirements on the aspects of integral flatness, crack control, attractiveness, later maintenance and the like of the terrace.
Cutting seams are arranged on the common concrete floor every 4-6 meters, the plane size of a single bin is about 30mx30m, and armor seams are arranged between the bins. Because terrace load is great (vehicle, freight train, etc.), and temperature stress influences, the ground very easily produces the condition such as peeling off, fracture. Higher costs are also incurred for floor post-maintenance repairs.
The prestressed concrete integral terrace (Post-Tensioned Slabs-on-Ground) is characterized in that prestressed tendons are added into the concrete terrace, and a certain prestress is established in a concrete terrace base layer structure by tensioning the prestressed tendons, so that the crack resistance of the structure is effectively enhanced, and the distance between expansion joints can be increased. The pouring area of a single bin in the prestressed concrete integral terrace can be increased to about 2500 square meters, the length of the single bin can reach 60-80 meters, and the width of an expansion joint seam is increased along with the increase of the pouring area of the single bin.
The prior armor seam device applied to the concrete terrace has the following defects:
(1) the existing armor seam of the concrete terrace is not provided with a stretching hole reserved with a prestressed tendon, and cannot meet the stretching requirement of the prestressed tendon in the prestressed concrete integral terrace, so the existing armor seam is not suitable for the prestressed concrete integral terrace;
(2) the existing concrete floor armor seam can not ensure the stability of a dowel bar: the stability of the dowel bar is damaged by the mounting and the placement of the dowel bar in the early stage and the vibration in the subsequent concrete construction;
(3) compared with a common concrete terrace, the expansion joint of the prestressed concrete integral terrace is larger. The problem that concrete edges and corners at expansion joints are often easily damaged under the action of service load can not be solved by the existing armor seams.
Disclosure of Invention
Therefore, the embodiment of the invention provides an armor seam device suitable for a prestressed integral terrace, wherein a prestressed tensioning hole is reserved on an armor seam, so that a prestressed tendon smoothly passes through the armor seam, and the prestressed tendon is tensioned outside the armor seam; the crossed support rods are arranged below the steel pipe sleeve, so that the stability of the steel pipe sleeve with the built-in dowel bars is improved, and the effective transfer of loads between bins is increased; increase the apron, avoid using the load to cause the damage to gap department concrete edges and corners, also reached pleasing to the eye effect simultaneously to the problem that the too big influence normal use of expansion joint gap that armor seam is not suitable for among the solution prior art whole terrace of prestressing force and formation.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
an armor seam device suitable for a prestressed integral terrace comprises an armor seam and a prestressed steel beam penetrating through the armor seam, wherein the armor seam comprises two oppositely-arranged angle steels with a gap left in the middle, a cover plate lapped on the upper surfaces of the two angle steels is detachably arranged on the gap, and a steel plate which is flush with the cover plate is arranged above the angle steel on one side of the cover plate;
a force transmission rod hole is formed in the middle of the armor seam, a steel pipe sleeve is sleeved in the force transmission rod hole, a force transmission rod penetrating through the armor seam is arranged inside the steel pipe sleeve, and two cross support rods for cross supporting the steel pipe sleeve are arranged on the steel pipe sleeve;
the armor seam is also provided with a prestress tensioning hole, a reserved sleeve is arranged in the prestress tensioning hole, and the prestress steel bundle is sleeved in the reserved sleeve.
The embodiment of the invention is further characterized in that the angle steel comprises an upper steel plate and a lower steel plate which are arranged oppositely up and down, a side steel plate is vertically arranged between the same sides of the upper steel plate and the lower steel plate, the steel pipe sleeve is arranged on one side of the side steel plate, and two ends of the cross brace rod are respectively supported between the upper steel plate and the lower steel plate.
The embodiment of the invention is also characterized in that the two angle steels are connected through the breakable bolt, and the breakable bolt is respectively arranged between the side steel plates of the two angle steels.
The embodiment of the invention is further characterized in that the cover plate is mounted on the two overlapped upper steel plates below the cover plate through fixing bolts.
The embodiment of the invention is also characterized in that two support rods with large-head nuts at the bottom ends are welded at the bottoms of the upper steel plates at two sides of the armor seam.
An embodiment of the invention is further characterized in that the crossing angle of two of said crossing struts is not more than 60 °
The embodiment of the invention has the following advantages:
(1) the prestressed tendon can smoothly pass through the armor seam by reserving the prestressed tensioning hole on the armor seam, so that the prestressed tendon can be tensioned outside the armor seam, the problem that the prestressed tendon cannot be tensioned by the existing armor seam is successfully solved, and the armor seam can be suitable for a prestressed concrete integral terrace;
(2) the armor seam device is provided with the cross support rods below the steel pipe sleeve, the cross support rods effectively solve the problem of stability of the steel pipe sleeve, the damage of vibration in subsequent concrete construction to the stability of the steel pipe sleeve is avoided, and the subsequent insertion and placement construction of a dowel bar is facilitated; the stability of the armor seam during installation is also ensured;
(3) according to the invention, the upper cover plate is added on the basis of the original armor seam, so that the concrete edges and corners at the expansion joint can be better protected, the damage of the concrete edges and corners caused by using load is avoided, the subsequent maintenance of the terrace is facilitated, and meanwhile, the attractive effect is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic view of the structure of an original armor seam;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a perspective view of the overall structure of the present invention;
FIG. 4 is a schematic diagram of the right view structure of the present invention;
FIG. 5 is a left side view of the present invention;
in the figure:
1-armor seam; 2-a force transmission rod hole; 3-steel pipe sleeve; 4-dowel bars; 5-cross brace bars; 6-cover plate; 7-a steel plate; 8-prestressed tensioning holes; 9-reserving a sleeve; 10-prestressed steel strands; 11-a strut;
101-an expansion joint; 102-angle steel; 103-upper steel plate; 104-lower steel plate; 105-side steel plate; 106-breakable bolts; 107-fixing the bolt.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The large-area concrete terrace is widely applied to projects such as industrial factory buildings, garages, large-scale shopping malls and the like at present. In the concrete terrace construction, in order to effectively control the concrete temperature crack, a separate bin pouring method is mostly adopted, and an armor seam is arranged between bins.
As shown in fig. 1, the armor seams are used for realizing the division between each bin of the terrace; meanwhile, the function of the template is achieved, and the template does not need to be dismantled after pouring. In addition, a dowel bar can be arranged in the armor seam to increase the effective load transmission; and possess the concerted action in coordination, when the branch storehouse terrace on expansion joint both sides takes place inhomogeneous settlement, the uneven step phenomenon in expansion joint both sides height can not appear.
With the production of the prestressed concrete integral terrace, the prestressed steel bundles need to be added into the concrete terrace, but the traditional armor seam arrangement mode does not have the condition of arranging the prestressed steel bundles, so the prestressed concrete integral terrace is not suitable for the prestressed concrete integral terrace. Meanwhile, the traditional armor seam has the problems that the stability of a dowel bar is not high, and the expansion joint is easily damaged.
Therefore, as shown in fig. 1 to 5, the invention provides an armor seam device suitable for a prestressed integral terrace, so as to be suitable for a prestressed concrete integral terrace, and improve the stability and the aesthetic effect of the whole device.
One of the characteristics of the device of the invention is that: increase apron 6 on original armor seam 1's basis, the concrete edges and corners of protection expansion joint 101 department that can be better avoids using the load to the damage that the concrete edges and corners caused, is favorable to the maintenance of follow-up terrace, has also reached pleasing to the eye effect simultaneously. Specifically, the method comprises the following steps:
the armor seam 1 comprises two oppositely arranged angle steels 102 with a gap 101 in the middle, and the gap 101 is detachably provided with a cover plate 6 lapped on the upper surfaces of the two angle steels 102. A steel plate 7 which is flush with the cover plate 6 is arranged above the angle steel 102 at one side of the cover plate 6.
Compared with a common concrete terrace, the expansion joint 101 of the prestressed concrete integral terrace is larger. The existing armor seam 1 can not solve the problem that the concrete edges and corners at the expansion joint 101 are often easily damaged under the action of service load. During the use, directly open apron 6, the packing of inside clearance and elasticity gap filler when making things convenient for expansion joint 101 to open protects expansion joint 101 department concrete edges and corners simultaneously, avoids it to be rolled and destroys.
The second characteristic of the device of the invention is that: the prestressed steel beam 10 smoothly passes through the armor seam 1 by reserving the prestressed tensioning holes 8 on the armor seam 1, so that the prestressed steel beam 10 is tensioned outside the armor seam 1, the problem that the prestressed steel beam 10 cannot be tensioned by the existing armor seam 1 is successfully solved, and the armor seam 1 can be suitable for a prestressed concrete integral terrace. Specifically, the method comprises the following steps:
the armor seam 1 is provided with a prestress tensioning hole 8, a reserved sleeve 9 is arranged in the prestress tensioning hole 8, and a prestress steel beam 10 is sleeved in the reserved sleeve 9. The problem of among the prior art, do not reserve the stretch-draw entrance to a cave of prestressing steel bundle 10 in the current concrete ground armour seam 1, be not applicable to prestressed concrete whole terrace is solved.
The device of the invention is characterized in that: this armor seam device has set up the alternately vaulting pole 5 that is used for supporting dowel steel 4, stability when having guaranteed the installation of armor seam 1. Specifically, the method comprises the following steps:
the middle part of the armor seam 1 is provided with a force transmission rod hole 2, a steel pipe sleeve 3 is sleeved in the force transmission rod hole 2, a force transmission rod 4 penetrating through the armor seam 1 is arranged inside the steel pipe sleeve 3, and the steel pipe sleeve 3 is provided with two cross support rods 5 for cross supporting the steel pipe sleeve 3. Preferably, the crossing angle of the two crossed supporting rods 5 is not more than 60 degrees, so that the lateral pressure of the crossed supporting rods 5 is reduced, and the stability of the device is further improved. The cross brace 5 is a hollow steel column. The supporting rigidity of the device is ensured, and meanwhile, the weight and the material loss of the device are reduced.
The cross brace 5 effectively solves the problem of stability of the steel pipe sleeve 3, avoids the damage of vibration to the stability of the steel pipe sleeve 3 in subsequent concrete construction, is favorable for the insertion and placing construction of subsequent dowel bars, and the cross brace 5 can improve the tightness of the connection between the device and concrete.
In order to further improve the stability of the armor seam device, it is preferable that the angle steel 102 includes an upper steel plate 103 and a lower steel plate 104 which are disposed opposite to each other in the vertical direction, a side steel plate 105 is vertically disposed between the same sides of the upper steel plate 103 and the lower steel plate 104, the steel pipe sleeve 3 is disposed on one side of the side steel plate 105, and both ends of the cross brace 5 are supported between the upper steel plate 103 and the lower steel plate 104, respectively.
The two angle steels 102 are connected through the breakable bolt 106, and the breakable bolt 106 is respectively installed between the side steel plates 105 of the two angle steels 102, so that the relative position between the two angle steels 102 is kept when the angle steels are installed, and the surface flatness of the armor seam 1 is improved. Concrete on two sides of the armor seam 1 contracts to drive angle steel 102 on two sides of the armor seam 1 to move, the breakable bolts 106 are pulled open to form an expansion joint 101, the cover plate 6 and the steel plate 7 which are respectively connected with the angle steel 102 on the two sides also move in opposite directions from the original aligned positions to form a gap, and the width of the cover plate 6 can cover the width of the formed expansion joint 101.
The cover plate 6 is mounted on two upper steel plates 103 overlapped under the cover plate 6 by fixing bolts 107. Easy dismounting is convenient for carry out regularly clean to the inside expansion joint 101 in apron 6 below.
Two supporting rods 11 with large-head screw caps at the bottom ends are welded at the bottoms of the upper steel plates 103 at two sides of the armor seam 1. The supporting rods 11 with large-head nuts on the two sides of the angle steel 102 are effectively connected with the concrete on the two sides, so that the angle steel 102 on the two sides and the concrete are ensured to deform cooperatively. During construction, the left part and the right part of the device are tightly connected into a whole, the angle steel 102 on the two sides of the back is respectively deformed with concrete in a cooperative mode, gaps are formed after the concrete on the two sides shrinks, and the dowel bar 4 can uniformly settle when ensuring that the concrete on the two sides can freely stretch out and draw back.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (4)
1. The utility model provides an armor seam device suitable for whole terrace of prestressing force, includes armor seam (1) and runs through prestressing steel bundle (10) of armor seam (1), its characterized in that: the armor seam (1) comprises two oppositely arranged angle steels (102) with an expansion joint (101) reserved in the middle, a cover plate (6) lapped on the upper surfaces of the two angle steels (102) is detachably mounted on the expansion joint (101), and a steel plate (7) which is flush with the cover plate (6) is arranged above the angle steel (102) on one side of the cover plate (6);
the angle steel (102) comprises an upper steel plate (103) and a lower steel plate (104) which are arranged vertically and oppositely, a side steel plate (105) is vertically arranged between the same sides of the upper steel plate (103) and the lower steel plate (104), the two angle steels (102) are connected through a breakable bolt (106), the breakable bolt (106) is respectively installed between the side steel plates (105) of the two angle steels (102), and the cover plate (6) is installed on the two upper steel plates (103) which are overlapped below the cover plate (6) through a fixing bolt (107);
a force transmission rod hole (2) is formed in the middle of the armor seam (1), a steel pipe sleeve (3) is sleeved in the force transmission rod hole (2), a force transmission rod (4) penetrating through the armor seam (1) is arranged inside the steel pipe sleeve (3), and two cross support rods (5) for cross supporting the steel pipe sleeve (3) are arranged on the steel pipe sleeve (3);
the armor seam (1) is further provided with a prestress tensioning hole (8), a reserved sleeve (9) is arranged in the prestress tensioning hole (8), and the prestress steel beam (10) is sleeved in the reserved sleeve (9).
2. The armor seam device for prestressed integral floors as claimed in claim 1, wherein: the steel pipe sleeve (3) is arranged on one side of the side steel plate (105), and two ends of the cross brace rod (5) are respectively supported between the upper steel plate (103) and the lower steel plate (104).
3. The armor seam device for prestressed integral floors as claimed in claim 1, wherein: two supporting rods (11) with large-head nuts at the bottom ends are welded at the bottoms of the upper steel plates (103) on the two sides of the armor seam (1).
4. The armor seam device for prestressed integral floors as claimed in claim 1, wherein: the intersection included angle of the two intersecting support rods (5) is not more than 60 degrees.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910880967.6A CN110714591B (en) | 2019-09-18 | 2019-09-18 | Armor seam device suitable for whole terrace of prestressing force |
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| CN201910880967.6A CN110714591B (en) | 2019-09-18 | 2019-09-18 | Armor seam device suitable for whole terrace of prestressing force |
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| CN110714591A CN110714591A (en) | 2020-01-21 |
| CN110714591B true CN110714591B (en) | 2021-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025119920A1 (en) * | 2023-12-05 | 2025-06-12 | Hengelhoef Concrete Joints Nv | POST TENSION flOOR JOINT |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112538947A (en) * | 2020-12-01 | 2021-03-23 | 江守来 | Pre-buried formula ripple type expansion joint |
| CN113719072B (en) * | 2021-09-06 | 2022-12-06 | 厦门卓毅建筑工程有限公司 | Armored joint structure applicable to steel bar column base and construction method thereof |
| CN117052083A (en) * | 2023-08-12 | 2023-11-14 | 六安亚杰建设工程有限责任公司 | Construction device and method for controlling flatness of deformation joint |
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| CN200949209Y (en) * | 2006-09-25 | 2007-09-19 | 常熟市万宝桥梁构件有限公司 | Prestressed expansion joint device |
| CN202830755U (en) * | 2012-09-13 | 2013-03-27 | 江苏淮安交通勘察设计研究院有限公司 | Prestress anchoring type bridge retractable device convenient to maintain |
| AU2015201724A1 (en) * | 2014-04-04 | 2015-10-22 | Pcln Holdings Limited | Armoured Joints Including Load Transfer Means |
| CN207609126U (en) * | 2017-11-30 | 2018-07-13 | 中建六局第三建筑工程有限公司 | Armor for the super flat one-pass molding load bearing heat preserving terrace of super large stitches |
| CN108457386A (en) * | 2018-01-11 | 2018-08-28 | 中国航空规划设计研究总院有限公司 | A kind of terrace expansion joint structure and its construction method under complicated use environment |
| CN110005169A (en) * | 2019-04-12 | 2019-07-12 | 中国启源工程设计研究院有限公司 | A kind of cracking resistance process with stressed seamless terrace |
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2019
- 2019-09-18 CN CN201910880967.6A patent/CN110714591B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200949209Y (en) * | 2006-09-25 | 2007-09-19 | 常熟市万宝桥梁构件有限公司 | Prestressed expansion joint device |
| CN202830755U (en) * | 2012-09-13 | 2013-03-27 | 江苏淮安交通勘察设计研究院有限公司 | Prestress anchoring type bridge retractable device convenient to maintain |
| AU2015201724A1 (en) * | 2014-04-04 | 2015-10-22 | Pcln Holdings Limited | Armoured Joints Including Load Transfer Means |
| CN207609126U (en) * | 2017-11-30 | 2018-07-13 | 中建六局第三建筑工程有限公司 | Armor for the super flat one-pass molding load bearing heat preserving terrace of super large stitches |
| CN108457386A (en) * | 2018-01-11 | 2018-08-28 | 中国航空规划设计研究总院有限公司 | A kind of terrace expansion joint structure and its construction method under complicated use environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2025119920A1 (en) * | 2023-12-05 | 2025-06-12 | Hengelhoef Concrete Joints Nv | POST TENSION flOOR JOINT |
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| CB03 | Change of inventor or designer information |
Inventor after: Xu Shudong Inventor after: Gao Shun Inventor after: Liu Cheng Inventor before: Xu Shudong Inventor before: Duan Xujie Inventor before: Song Yuying |
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Denomination of invention: Armor seam device suitable for prestressed integral floor Effective date of registration: 20211230 Granted publication date: 20210601 Pledgee: Haidian Beijing science and technology enterprise financing Company limited by guarantee Pledgor: Beijing Yintai constructs prestressed technology Limited by Share Ltd. Registration number: Y2021110000121 |
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Address after: 100085 room 1506, 15 / F, building 1, courtyard 1, Shangdi 10th Street, Haidian District, Beijing Patentee after: Beijing Yintai Construction Technology Co.,Ltd. Address before: 100085 room 1506, 15 / F, building 1, courtyard 1, Shangdi 10th Street, Haidian District, Beijing Patentee before: Beijing Yintai constructs prestressed technology Limited by Share Ltd. |
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