CN204983397U - Prestressing force formula concrete beam pre -buried steel structure is strengthened in steel sheet segmentation - Google Patents
Prestressing force formula concrete beam pre -buried steel structure is strengthened in steel sheet segmentation Download PDFInfo
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- CN204983397U CN204983397U CN201520483533.XU CN201520483533U CN204983397U CN 204983397 U CN204983397 U CN 204983397U CN 201520483533 U CN201520483533 U CN 201520483533U CN 204983397 U CN204983397 U CN 204983397U
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Abstract
The utility model discloses a prestressing force formula concrete beam pre -buried steel structure is strengthened in steel sheet segmentation, it comprises steel sheet formula structure group and structure retainer plate, its light plate formula structure group comprises reinforcing bar segmentation skeleton steel sheet, conventional reinforcing bar, stiffener segmentation skeleton steel sheet and stiffener, and the structure retainer plate is used for fixed steel sheet formula structure group, this steel sheet steel hole segmentation heavier -duty concrete beam pre -buried steel structure can be solved the traditional mode of dependence and connect the problem that concrete beam's steel construction exists, realizes improving the function of concrete beam's prestressing force, can make reinforcing bar atress on same horizontal plane of being connected, has improved the receive force intensity of reinforcing bar in the junction, wearing several stiffeners more on strengthening the fixed plate, just enabling the destroyed breakpoint of concrete beam and move to both sides from middle, gone to the bottom the contraction in length of reinforcing bar atress among the concrete beam in other words, the intensity of stretching resistance has improved, and technological means present simultaneously also can be in order to realize its mechanized automated production even.
Description
technical field:
The utility model relates to a kind of steel plate sectional and strengthens pre-stress type concrete beam pre-buried steel structure.
background technology:
Connection between reinforcing bar in concrete beam, traditional method is with tied silk binding or electric welding; Binding only plays interim fixation, does not substantially stress; Electric welding is the connection on top layer between reinforcing bar, thus cannot central point between reinforcing bar stressed; Reinforcing bar of going to the bottom simultaneously in concrete beam directly bears the pulling force to two from the center of beam; Depth of beam determines the size of reinforcing bar by pulling force of going to the bottom, the Liang Yuegao of Proper Match, and the pulling force of going to the bottom suffered by reinforcing bar is fewer; Tradition improves prestressed way: upper base and the large reinforcing bar overstriking of going to the bottom, encryption, the little reinforcing bar overstriking of surrounding, encryption; Concrete beam is widened, increases; Although these ways can see effect, cost is higher, waste resource, and increase, restriction that the broadening Tu Liang of loading in mixture is subject to place, and connect the steel work of concrete beam by traditional mode, concentrate and use the prospect of mechanization or automation relatively little.
At present, in patent CN103541437A disclosed in Chinese patent literature, disclose a kind of reinforced concrete frame node district additional steel plates and gauze wire cloth parcel strengthens structure and preparation method, this reinforcement structure and preparation method are on former bean column node basis, by upper and lower for Column border node two parts, the additional L-type steel plate in four bights of column section, adopts resistance spot welding steel plate and Column border node reinforcing cage to be fixed; And outside steel plate, wrap up layer of steel wire net, by tied silk, steel mesh reinforcement is fixed on Column border node reinforcing cage, strengthens structure with the common configuration node of L-type steel plate; Although but this structure globality is better, do not carry out consolidation process in the most flimsy position, and reinforced concrete frame reinforcing process complexity adds manufacture difficulty.
In patent CN203008137U disclosed in Chinese patent literature, disclose a kind of steel core concrete column and reinforced concrete beam top mode syndeton, the reinforced concrete beam comprising steel core concrete column and be attached thereto, steel core concrete column comprises steel pipe, ring stiffener and vertical stiffening rib is provided with in steel pipe, steel pipe outside is provided with styletable rebound, styletable rebound is connected by the lower main muscle junction plate of high-strength bolt with the upper main muscle junction plate and bottom that are located at reinforced concrete beam top, and the junction of adjacent two reinforced concrete beams is provided with node shear reinforcement; Be connected by too many node between this steel core concrete column with reinforced concrete beam top mode syndeton, fastness exist very large problem, need at substantial material simultaneously, increase manufacturing cost.
Therefore, in order to solve above-mentioned difficulties, have employed steel plate steel hole segmentation heavier-duty concrete beam pre-buried steel structure, the jumbo raising of the prestressing force of concrete beam can be caused; Adopt drilling steel plate to carry out connecting reinforcement, the reinforcing bar that is connected can be made stressed on same horizontal plane, improve reinforcing bar in junction by force intensity; Reinforcing bar is exactly the mid portion of reinforcing bar of going to the bottom by the link that pulling force is the weakest in concrete beam, drilling steel plate is adopted to connect, as long as add several hole on steel plate, wear several bar dowels in centre more, the destroyed breakpoint of concrete beam just can be made to move from centre to both sides, be equivalent to go to the bottom in concrete beam the contraction in length of reinforcing steel bar bear, the intensity of stretching resistance improves, and when skilled operation, drilling steel plate strip connects steel work cost of labor to be increased few, and existing technological means also can to realize its mechanization even automated production simultaneously.
summary of the invention:
The purpose of this utility model is to solve the steel work Problems existing relying on traditional mode to connect concrete beam, realizes the prestressed function improving concrete beam, provides a kind of steel plate sectional to strengthen pre-stress type concrete beam pre-buried steel structure.
The utility model adopts following technical scheme to realize its goal of the invention: a kind of steel plate sectional strengthens pre-stress type concrete beam pre-buried steel structure, and it is made up of steel plate type structure group 1 and structure retainer plate 2; Wherein steel plate type structure group 1 is made up of steel bar segmentation skeleton steel plate 3, conventional rebar 4, stiffener sectional framework steel plate 5 and stiffener 6; Steel bar segmentation skeleton steel plate 3 is located at steel plate type structure group 1 both sides; Stiffener sectional framework steel plate 5 is located at steel plate type structure group 1 centre position; Conventional rebar 4 runs through steel bar segmentation skeleton steel plate 3 and stiffener sectional framework steel plate 5, and steel bar segmentation skeleton steel plate 3 is evenly distributed with stiffener sectional framework steel plate 5; Stiffener 6 runs through stiffener sectional framework steel plate 5, and stiffener sectional framework steel plate 5 is evenly distributed; After long reinforcing bar is run through steel plate, each contact point is through spot-welded, is equal to and long reinforcing bar is divided into several sections of bar dowels, is improved the integrated prestress of concrete beam pre-buried steel structure by the prestressing force improving each section of bar dowel; The effect of steel plate type structure group 1 forms firm reinforcement frame, improves the ring orientation prestress of concrete beam; Structure retainer plate 2, for fixation steel plate formula structure group 1, makes many group steel plate type structure groups 1 form multilayer architecture.
The utility model, in order to make the reinforcing bar that is connected stressed on same horizontal plane, increases each segment prestressing force, realizes improving the function by force intensity of reinforcing bar in junction, is provided with steel bar segmentation skeleton steel plate 3 and conventional rebar 4; Steel bar segmentation skeleton steel plate 3 is with the fixed head setting up two separately that steel plate is made in plank frame group; Conventional rebar 4 runs through and is arranged on steel bar segmentation skeleton steel plate 3, and links together with steel bar segmentation skeleton steel plate 3, and each tie point all uses spot welding, makes it to form firm reinforcement frame.
Namely the utility model to go to the bottom the stretching resistance of mid portion of reinforcing bar and prestressed intensity by the weakest link of pulling force in concrete beam to improve reinforcing bar, is provided with stiffener sectional framework steel plate 5 and stiffener 6; Stiffener sectional framework steel plate 5 is different from steel bar segmentation skeleton steel plate 3, is located at plank frame group centre position, the stiffener made with steel plate; Stiffener 6 runs through and is arranged on stiffener sectional framework steel plate 5, and links together with stiffener sectional framework steel plate 5, and each tie point all uses spot welding, makes it to form firm reinforcement frame; Many stiffeners 6 make to go to the bottom in concrete beam the contraction in length of reinforcing steel bar bear, and the intensity of stretching resistance improves.
The utility model, in order to realize the function arranging assembling stiffener according to Strength Changes prestressed in real work flexibly, is provided with vertical setting of types stiffener hole 10 and horizontally-arranged stiffener hole 11; Vertical setting of types stiffener hole 10 and horizontally-arranged stiffener hole 11 are all the stiffener holes 8 on stiffener sectional framework steel plate 5, make horizontally-arranged or vertical setting of types selection according to actual needs, vertical setting of types stiffener hole 10 and horizontally-arranged stiffener hole 11 also can be determined to organize number according to actual conditions.
Owing to have employed above technical scheme, the utility model achieves its goal of the invention preferably, this steel plate steel hole segmentation heavier-duty concrete beam pre-buried steel structure can solve the steel work Problems existing relying on traditional mode to connect concrete beam, realizes the prestressed function improving concrete beam; Adopt conventional fixed head and conventional rebar, form firm reinforcement frame, the reinforcing bar that is connected can be made stressed on same horizontal plane, improve reinforcing bar in junction by force intensity; Reinforcing bar is exactly the mid portion of reinforcing bar of going to the bottom by the link that pulling force is the weakest in concrete beam, several stiffeners worn by reinforcement fixed head more, the destroyed breakpoint of concrete beam just can be made to move from centre to both sides, be equivalent to go to the bottom in concrete beam the contraction in length of reinforcing steel bar bear, the intensity of stretching resistance improves, and the design in vertical setting of types stiffener hole and horizontally-arranged stiffener hole can need according to prestressed in real work the selection making the horizontally-arranged row of stiffener or vertical setting of types row; When skilled operation, this steel plate steel hole segmentation heavier-duty concrete beam pre-buried steel infrastructure cost is not high, and existing technological means also can to realize its mechanization even automated production simultaneously.
accompanying drawing illustrates:
Accompanying drawing 1 is overall structure schematic diagram of the present utility model.
Accompanying drawing 2 is structural representations of the utility model mark 1.
Accompanying drawing 3 is cross-sectional view of the utility model mark 1.
Accompanying drawing 4 is structural representations of the utility model mark 3.
Accompanying drawing 5 is structural representations of the utility model mark 5.
Accompanying drawing 6 is cross-sectional view that the utility model marks 5 vertical setting of types designs.
Accompanying drawing 7 is cross-sectional view that the utility model marks 5 horizontally-arranged designs.
Accompanying drawing 8 is structural representations of the first tested beam pre-buried steel structure of first prestressing force test of the concrete beam of the utility model drilling steel plate strip connecting reinforcement.
Accompanying drawing 9 is schematic front view of the first tested beam pre-buried steel structure of first prestressing force test of the concrete beam of the utility model drilling steel plate strip connecting reinforcement.
Accompanying drawing 10 is structural representations of the first prestressing force test first contrast beam pre-buried steel structure of the concrete beam of the utility model drilling steel plate strip connecting reinforcement.
Accompanying drawing 11 is schematic front view of the first prestressing force test first contrast beam pre-buried steel structure of the concrete beam of the utility model drilling steel plate strip connecting reinforcement.
Accompanying drawing 12 is structural representations that the utility model drilling steel plate strip makes the new tested beam pre-buried steel structure of prestressing force test of new reinforced concrete beam.
Accompanying drawing 13 is schematic front view that the utility model drilling steel plate strip makes the new tested beam pre-buried steel structure of prestressing force test of new reinforced concrete beam.
Accompanying drawing 14 is structural representations that the utility model drilling steel plate strip makes the prestressing force test new contrast beam pre-buried steel structure of new reinforced concrete beam.
Accompanying drawing 15 is schematic front view that the utility model drilling steel plate strip makes the prestressing force test new contrast beam pre-buried steel structure of new reinforced concrete beam.
Description of reference numerals is shown in manual last page form.
detailed description of the invention:
Below in conjunction with accompanying drawing, summary of the invention is described further:
embodiment 1:
From summary of the invention, a kind of steel plate sectional strengthens pre-stress type concrete beam pre-buried steel structure, and it is made up of steel plate type structure group 1 and structure retainer plate 2; Wherein steel plate type structure group 1 is made up of steel bar segmentation skeleton steel plate 3, conventional rebar 4, stiffener sectional framework steel plate 5 and stiffener 6; Steel bar segmentation skeleton steel plate 3 is located at steel plate type structure group 1 both sides; Stiffener sectional framework steel plate 5 is located at steel plate type structure group 1 centre position; Conventional rebar 4 runs through steel bar segmentation skeleton steel plate 3 and stiffener sectional framework steel plate 5, and steel bar segmentation skeleton steel plate 3 is evenly distributed with stiffener sectional framework steel plate 5; Stiffener 6 runs through stiffener sectional framework steel plate 5, and stiffener sectional framework steel plate 5 is evenly distributed; After long reinforcing bar is run through steel plate, each contact point is through spot-welded, is equal to and long reinforcing bar is divided into several sections of bar dowels, is improved the integrated prestress of concrete beam pre-buried steel structure by the prestressing force improving each section of bar dowel; The effect of steel plate type structure group 1 forms firm reinforcement frame, improves the ring orientation prestress of concrete beam; Structure retainer plate 2, for fixation steel plate formula structure group 1, makes many group steel plate type structure groups 1 form multilayer architecture.
Steel plate type structure group 1 described in the utility model refers to: structure is strengthened in the main steel plate steel hole of concrete beam pre-buried steel structure; It is made up of steel bar segmentation skeleton steel plate 3, conventional rebar 4, stiffener sectional framework steel plate 5 and stiffener 6; Its effect forms firm reinforcement frame, improves the ring orientation prestress of concrete beam; Its structure is as shown in accompanying drawing 2,3, and its design attitude is as marked shown in 1 in accompanying drawing 1.
Structure retainer plate 2 described in the utility model refers to: form structure retainer plate 2 fixation steel plate formula structure group 1 by plain bars and formed and organize steel work more; Its effect is fixation steel plate formula structure group 1, composition multi-layer framework; Its design attitude is as marked shown in 2 in accompanying drawing 1.
embodiment 2:
The utility model, in order to make the reinforcing bar that is connected stressed on same horizontal plane, increases each segment prestressing force, realizes improving the function by force intensity of reinforcing bar in junction, is provided with steel bar segmentation skeleton steel plate 3 and conventional rebar 4; Steel bar segmentation skeleton steel plate 3 is with the fixed head setting up two separately that steel plate is made in plank frame group; Conventional rebar 4 runs through and is arranged on steel bar segmentation skeleton steel plate 3, and links together with steel bar segmentation skeleton steel plate 3, and each tie point all uses spot welding, makes it to form firm reinforcement frame.
Steel bar segmentation skeleton steel plate 3 described in the utility model refers to: the steel plate being located at the two ends of concrete beam pre-buried steel structure, forms the framework of a uniform force with conventional rebar 4; Which is provided with conventional rebar hole 7; Its effect connects conventional rebar 4, improve reinforcing bar in junction by force intensity; As shown in Figure 4, its design attitude is as marked shown in 3 in accompanying drawing 2,3 for its structure.
Conventional rebar 4 described in the utility model refers to: run through with steel bar segmentation skeleton steel plate 3 and be connected, form firm reinforcement frame; Its effect runs through steel bar segmentation skeleton steel plate 3, makes all reinforcing bars stressed on same horizontal plane, improve reinforcing bar in junction by force intensity; Its design attitude is as marked shown in 4 in accompanying drawing 2,3.
embodiment 3:
Namely the utility model to go to the bottom the stretching resistance of mid portion of reinforcing bar and prestressed intensity by the weakest link of pulling force in concrete beam to improve reinforcing bar, is provided with stiffener sectional framework steel plate 5 and stiffener 6; Stiffener sectional framework steel plate 5 is different from steel bar segmentation skeleton steel plate 3, is located at plank frame group centre position, the stiffener made with steel plate; Stiffener 6 runs through and is arranged on stiffener sectional framework steel plate 5, and links together with stiffener sectional framework steel plate 5, and each tie point all uses spot welding, makes it to form firm reinforcement frame; Many stiffeners 6 make to go to the bottom in concrete beam the contraction in length of reinforcing steel bar bear, and the intensity of stretching resistance improves.
Stiffener sectional framework steel plate 5 described in the utility model refers to: the steel plate being located at the centre position of concrete beam pre-buried steel structure, increases stretching resistance with many stiffeners 6; Which is provided with stiffener hole 8 and strengthen fixed head conventional rebar hole 9; Its effect is the intensity of the stretching resistance of the mid portion improving reinforcing bar of going to the bottom; As shown in Figure 5, its design attitude is as marked shown in 5 in accompanying drawing 2,3 for its structure.
Stiffener 6 described in the utility model refers to: many stiffeners 6 run through with stiffener sectional framework steel plate 5 and are connected, and improve by force intensity; Its effect runs through stiffener sectional framework steel plate 5, improves the intensity of the stretching resistance of the mid portion of reinforcing bar of going to the bottom; Its design attitude is as marked shown in 6 in accompanying drawing 2,3.
embodiment 4:
The utility model, in order to realize the function arranging assembling stiffener according to Strength Changes prestressed in real work flexibly, is provided with vertical setting of types stiffener hole 10 and horizontally-arranged stiffener hole 11; Vertical setting of types stiffener hole 10 and horizontally-arranged stiffener hole 11 are all the stiffener holes 8 on stiffener sectional framework steel plate 5, make horizontally-arranged or vertical setting of types selection according to actual needs, vertical setting of types stiffener hole 10 and horizontally-arranged stiffener hole 11 also can be determined to organize number according to actual conditions.
Vertical setting of types stiffener hole 10 described in the utility model refers to: the stiffener hole 8 on stiffener sectional framework steel plate 5 arranges by vertical setting of types; Its effect is according to needs prestressed in real work, stiffener 6 vertical setting of types is arranged and installs; Its design attitude is as marked shown in 10 in accompanying drawing 6.
Horizontally-arranged stiffener hole 11 described in the utility model refers to: the stiffener hole 8 on stiffener sectional framework steel plate 5 is by horizontally-arranged arrangement; Its effect is according to needs prestressed in real work, and the horizontally-arranged row of stiffener 6 are installed; Its design attitude is as marked shown in 11 in accompanying drawing 6.
Conventional rebar hole 7 described in the utility model refers to: the conventional rebar hole on steel bar segmentation skeleton steel plate 3; Its effect is the installation for conventional rebar 4; Its design attitude is as marked shown in 7 in accompanying drawing 4.
Stiffener hole 8 described in the utility model refers to: the stiffener hole on stiffener sectional framework steel plate 5; Its effect is the installation for stiffener 6; Its design attitude is as marked shown in 8 in accompanying drawing 5.
Reinforcement fixed head conventional rebar hole 9 described in the utility model refers to: the conventional rebar hole on stiffener sectional framework steel plate 5; Its effect is the installation for conventional rebar 4; Its design attitude is as marked shown in 9 in accompanying drawing 5.
embodiment 5:
First prestressing force test with the concrete beam of drilling steel plate strip connecting reinforcement:
(1) first tested beam
Both sides are gone to the bottom respectively by two long 4500 millimeters, diameters 20 millimeters; Long 3000 millimeters, diameter 16 millimeters; Long 2250 millimeters, diameter 14 millimeters composition, upper base both sides by two long 4500 millimeters, diameters 12 millimeters, long 2250 millimeters, diameter 14 millimeters forms, and connects above-mentioned reinforcing bar above by 26 block length 480 millimeters, wide 36 millimeters, thick 6 millimeters steel plate strip with holes respectively on the both sides of beam by the method set forth.Wei Zhu made by reinforcing bar that is long 1800 millimeters with 21, diameter 6.5 millimeters again; then the steel work be made up of above-mentioned material (shown in Fig. 8,9); fluid concrete, after adding up-protective layer, makes long 4520 millimeters, high 500 millimeters, wide 260 millimeters concrete beam 3.
(2) beam is contrasted for the first time
Design way routinely, the reinforcing bar of each 1 long 4500 millimeters, both sides of going to the bottom, diameter 25 millimeters; The reinforcing bar of each 1 long 4500 millimeters, upper base both sides, diameter 22 millimeters; 31 1800 millimeters, diameter 8 millimeters of Wei Zhu, the steel beam structure be made up of above-mentioned material (shown in Figure 10,11), fluid concrete, after adding cement topping, makes the 3 piece beams all identical with the length of tested beam.
The steel theory calculate gross weight 81.8 kilograms of first tested beam, contrast beam is 83 kilograms, real title 79 kilograms, tested beam, and real title contrast 82.8 kilograms, beam, the actual steel gross weight used of first tested beam is contrast beam 95.4%.
(3) method of inspection: directly in the centre of beam, concrete back is broken, according to the peak record of meter reading with the jack of 200 tons.
(4) assay: contrast beam is 15.12 tons at the average of central point forced breakage; Tested beam is 23.63 tons at the average that central point ruptures, and the maximum prestressing force of tested beam revenue centre point is 156.28% of contrast beam.
embodiment 6:
The prestressing force test of new reinforced concrete beam is made by drilling steel plate strip:
Scheme one:
(1) new tested beam
The end muscle of going to the bottom on both sides made by reinforcing bar that is long 4500 millimeters with 4, diameter 16 millimeters, by the length 246 millimeters of both sides drilling, wide 52 millimeters, the steel plate strip 21 pieces of thick 0.6 millimeter, respectively by the method set forth above, connect two reinforcing bars of going to the bottom that both sides are overlapping up and down, each two of the reinforcing bar of length 2250 millimeters, diameter 16 millimeters is penetrated again respectively on the both sides of centre, the both sides making to go to the bottom in the middle part of muscle have respectively be similar to long 2250 millimeters, " square steel " of the length of side 32 millimeters, play a part very firm, " short slab " that " wooden pail effect " that solve concrete beam is formed.Upper base is long 4500 millimeters with two, the reinforcing bar of diameter 16 millimeters.Reinforcing bar that is long 1800 millimeters with 25, diameter 8 millimeters is made and is enclosed muscle; make the steel work shown in Figure 12,13; fluid concrete; after adding cement topping; make long 4520 millimeters, high 500 millimeters, the concrete beam of wide 260 millimeters (remarks: weld thick 10 millimeters, the steel plate of the isosceles right triangle of long 100 millimeters of waist on the angle of the mid-plane upper ledge of going to the bottom again; play stabilization, stop waving of square bar framework of going to the bottom.）
(2) beam (to contrast beam identical with the preliminary examination shown in Figure 10,11) is newly contrasted
Tested beam theory calculates gross weight 87.1 kilograms, contrast 83.1 kilograms, the beam of steel, because of steel plate not very specification, weight is decreased after tested beam drilling, the gross weight 84.3 kilograms of the tested beam of real title, the gross weight 82.8 kilograms of contrast beam, the gross weight of tested beam steel used is 101.81% of contrast beam.
(3) method of inspection (identical with preliminary examination)
(4) assay: tested beam apart from the central point about 1130 millimeters place fracture of beam, the highest stressed be 33.06 tons, contrast beam ruptures at mid point, the highest stressed 15.12 tons, and the maximum prestressing force of tested beam central point is 218.05% of contrast beam.
Scheme two:
(1) new tested beam
With the end muscle that 4 long 4500 millimeters, diameters 22 millimeters are gone to the bottom as both sides, by long 246 millimeters, wide 72 millimeters, thick 8 millimeters steel plate strip 21 pieces, two overlapping up and down reinforcing bars of going to the bottom of both sides are connected above respectively by the method set forth, insert each two of the reinforcing bar of length 2250 millimeters, diameter 22 millimeters more respectively to both sides in centre, go to the bottom the both sides of muscle zone line formed respectively be similar to long 2250 millimeters, " square steel " of the length of side 44 millimeters, play a part very firm, solve " short slab " that in concrete beam, " wooden pail effect " is formed.Upper base is long 4500 millimeters with 2, the reinforcing bar of diameter 22 millimeters, reinforcing bar that is long 1800 millimeters with 36, diameter 8 millimeters does and encloses muscle, make the steel work shown in Figure 12,13, fluid concrete, make long 4520 millimeters, wide 260 millimeters, the concrete beam of high 500 millimeters (remarks: weld thick 10 millimeters, the isosceles right triangle steel plate of long 100 millimeters of waist on the angle of the mid-plane frame of going to the bottom, play stabilization, stop waving of square bar framework of going to the bottom).
(2) newly beam is contrasted
Design to increase reinforcing bar routinely and improve prestressed method: go to the bottom and on average put the reinforcing bar of 4 long 4500 millimeters, diameters 25 millimeters; Upper base on average puts the reinforcing bar of 4 long 4500 millimeters, diameters 22 millimeters; The reinforcing bar be Wei Zhu of, diameter 8 millimeter long 1800 millimeters with 45, makes the steel work shown in Figure 14,15.The length of whole concrete beam is identical with tested.
Tested beam presses theory calculate steel gross weight 153.6 kilograms, actually weighs 152.2 kilograms, and contrast beam theory calculates and weighs 154 kilograms, and actual weighing is 152.5 kilograms, and the actual steel gross weight used of tested beam is 99.8% of contrast beam.
(3) method of inspection (identical with preliminary examination)
(4) assay: tested beam apart from the central point about 1130 millimeters place fracture of beam, the highest stressed be 45.99 tons, contrast beam is the highest stressed 28.67 tons in central point fracture, and the maximum prestressing force of tested beam central point is 160.41% of contrast beam.
| Reference numerals | Mark title | Reference numerals | Mark title |
| 1 | Steel plate type structure group 1 | 7 | Conventional rebar hole 7 |
| 2 | Structure retainer plate 2 | 8 | Stiffener hole 8 |
| 3 | Steel bar segmentation skeleton steel plate 3 | 9 | Strengthen fixed head conventional rebar hole 9 |
| 4 | Conventional rebar 4 | 10 | Vertical setting of types stiffener hole 10 |
| 5 | Stiffener sectional framework steel plate 5 | 11 | Horizontally-arranged stiffener hole 11 |
| 6 | Stiffener 6 |
Claims (6)
1. steel plate sectional strengthens a pre-stress type concrete beam pre-buried steel structure, it is characterized in that it is made up of steel plate type structure group (1) and structure retainer plate (2); Structure retainer plate (2) is by fixing for composite steel plank frame group (1) as a whole.
2. a kind of steel plate sectional according to claim 1 strengthens pre-stress type concrete beam pre-buried steel structure, it is characterized in that steel plate type structure group (1) is made up of with stiffener (6) steel bar segmentation skeleton steel plate (3), conventional rebar (4), stiffener sectional framework steel plate (5); Steel bar segmentation skeleton steel plate (3) is located at steel plate type structure group (1) two; Stiffener sectional framework steel plate (5) is located at steel plate type structure group (1) centre position; Conventional rebar (4) runs through steel bar segmentation skeleton steel plate (3) and stiffener sectional framework steel plate (5), and steel bar segmentation skeleton steel plate (3) is evenly distributed with stiffener sectional framework steel plate (5); Stiffener (6) runs through stiffener sectional framework steel plate (5), and stiffener sectional framework steel plate (5) is evenly distributed; Described steel plate type structure group (1) forms firm reinforcement frame, improves the ring orientation prestress of concrete beam; Described structure retainer plate (2), for fixation steel plate formula structure group (1), makes many groups steel plate type structure group (1) form multi-layer framework; Described steel plate sectional strengthen prestressed implication be after long reinforcing bar is run through steel plate each contact point through spot-welded, be equal to and long reinforcing bar is divided into several sections of bar dowels, improved the integrated prestress of concrete beam pre-buried steel structure by the prestressing force improving each section of bar dowel.
3. a kind of steel plate sectional according to claim 2 strengthens pre-stress type concrete beam pre-buried steel structure, it is characterized in that in steel plate type structure group (1), be provided with steel bar segmentation skeleton steel plate (3) and conventional rebar (4); Described steel bar segmentation skeleton steel plate (3) is with the fixed head setting up two separately that steel plate is made in steel plate type structure group (1); Described conventional rebar (4) runs through and is arranged on steel bar segmentation skeleton steel plate (3), and links together with steel bar segmentation skeleton steel plate (3), and each tie point all uses spot welding, makes it to form firm reinforcement frame; The effect of steel bar segmentation skeleton steel plate (3) and conventional rebar (4) is that the reinforcing bar making to be connected is stressed on same horizontal plane, increases each segment prestressing force, realize improving reinforcing bar in junction by force intensity.
4. a kind of steel plate sectional according to claim 1 and 2 strengthens pre-stress type concrete beam pre-buried steel structure, it is characterized by steel plate type structure group (1) and is provided with stiffener sectional framework steel plate (5) and stiffener (6); Described stiffener sectional framework steel plate (5) is different from steel bar segmentation skeleton steel plate (3), is located at steel plate type structure group (1) centre position, the stiffener made with steel plate; Described stiffener (6) runs through and is arranged on stiffener sectional framework steel plate (5), and links together with stiffener sectional framework steel plate (5), and each tie point all uses spot welding, makes it to form firm reinforcement frame; Many stiffeners (6) make to go to the bottom in concrete beam the contraction in length of reinforcing steel bar bear, and the intensity of stretching resistance improves; The effect of stiffener sectional framework steel plate (5) and stiffener (6) improves reinforcing bar namely to go to the bottom the stretching resistance of mid portion of reinforcing bar and prestressed intensity by the weakest link of pulling force.
5. a kind of steel plate sectional according to claim 4 strengthens pre-stress type concrete beam pre-buried steel structure, it is characterized in that being provided with vertical setting of types stiffener hole (10) on stiffener sectional framework steel plate (5); Described vertical setting of types stiffener hole (10) is the stiffener hole (8) on stiffener sectional framework steel plate (5), and vertical setting of types stiffener hole (10) can be determined to organize number according to actual conditions.
6. a kind of steel plate sectional according to claim 5 strengthens pre-stress type concrete beam pre-buried steel structure, it is characterized in that on stiffener sectional framework steel plate (5), be provided with horizontally-arranged stiffener hole (11); Described horizontally-arranged stiffener hole (11) is the stiffener hole (8) on stiffener sectional framework steel plate (5), and horizontally-arranged stiffener hole (11) can be determined to organize number according to actual conditions.
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| CN201520483533.XU CN204983397U (en) | 2015-07-07 | 2015-07-07 | Prestressing force formula concrete beam pre -buried steel structure is strengthened in steel sheet segmentation |
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| CN201520483533.XU CN204983397U (en) | 2015-07-07 | 2015-07-07 | Prestressing force formula concrete beam pre -buried steel structure is strengthened in steel sheet segmentation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320606A (en) * | 2015-07-07 | 2017-01-11 | 黄均贤 | Steel plate prestress-segmentally-reinforcing type embedded steel structure for concrete beam |
| CN107190626A (en) * | 2017-06-26 | 2017-09-22 | 北京交通大学 | Prestress steel gypsum/Combined concrete girder truss of panel automatic horizontal |
| WO2023050742A1 (en) * | 2021-09-29 | 2023-04-06 | 黄均贤 | Framework structure having steel products alternately combined in concrete beam |
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2015
- 2015-07-07 CN CN201520483533.XU patent/CN204983397U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320606A (en) * | 2015-07-07 | 2017-01-11 | 黄均贤 | Steel plate prestress-segmentally-reinforcing type embedded steel structure for concrete beam |
| CN107190626A (en) * | 2017-06-26 | 2017-09-22 | 北京交通大学 | Prestress steel gypsum/Combined concrete girder truss of panel automatic horizontal |
| WO2023050742A1 (en) * | 2021-09-29 | 2023-04-06 | 黄均贤 | Framework structure having steel products alternately combined in concrete beam |
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