CN104727475A - Modified concrete superposition board floor structure with shear keys and connection method - Google Patents
Modified concrete superposition board floor structure with shear keys and connection method Download PDFInfo
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- CN104727475A CN104727475A CN201510102832.9A CN201510102832A CN104727475A CN 104727475 A CN104727475 A CN 104727475A CN 201510102832 A CN201510102832 A CN 201510102832A CN 104727475 A CN104727475 A CN 104727475A
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Abstract
The invention relates to the field of assembly concrete buildings, in particular to a modified concrete superposition board floor structure with shear keys and a connection method. The produced floor can serve as a floor applied in the assembly concrete buildings. An original superposition board floor comprises cast-in-situ layers and precast bottom boards which are arranged up and down, the shear keys are arranged on the precast bottom boards, the precast bottom boards are connected with the cast-in-situ layers through the shear keys, and a firm combination structure is formed. Two lateral faces of the original precast bottom boards are changed into slopes, and the contact area between the original precast bottom boards and the cast-in-situ layers is increased; four lateral faces of the precast bottom boards are made to be rough surfaces, and the friction between the precast bottom boards and the cast-in-situ layers is increased; lap joint rebar grooves are additionally formed in two sides of each precast bottom board, and lap joint rebars are arranged in the lap joint rebar grooves, so that equivalent transfer of tensile stress of the rebars at the bottoms of the boards is achieved. Meanwhile, steel rods with threads at the ends are embedded in a precast beam and matched with fixing steel boards and fixing nuts for use, and the superposition board floor structure is connected to the beam. Firm connection between superposition board floor structures as well as between the superposition board floor structure and the beam is achieved effectively through the above measures.
Description
Technical field
The present invention relates to assembly concrete building field, be specially a kind of concrete folding plate floor slab structure and method of attachment of band shear key of improvement, the concrete folding plate floor of production can be used as the floor of application in assembly concrete building.
Background technology
At present, in the concrete construction of practical set formula, what floor was generally applied is composite slab by steel bar truss and concrete, and this kind of superimposed sheet has the shortcomings such as floor is thicker, construction costs is high.For addressing this problem, Chinese invention patent (the patent No. 201210279952.2, publication number CN102839773A) disclose one " the band concrete folding plate floor of shear key, prefabricated structure and construction method ", but how to be connected between the concrete folding plate floor not relating to band shear key and with beam.At present, the connecting method for reinforcing bars between superimposed sheet floor slab structure, be difficult to realize the equivalence transmission that reinforcement moment of flexure produces tensile stress, the connection of superimposed sheet floor slab structure and beam, without anchor measure between prefabricated panel and beam.For this reason, be necessary suitably to improve the concrete folding plate floor of disclosed band shear key, make it the connection being convenient to realize between himself, more to be necessary to propose between himself simultaneously and with the firm method of attachment of beam, with meet actual engineering design construction needs, advance its assembly concrete building in application.
Summary of the invention
The object of the present invention is to provide a kind of concrete folding plate floor slab structure and method of attachment of band shear key of improvement, be firmly connected between the concrete folding plate floor slab structure of the band shear key that realization improves and with beam, meet actual engineering design construction needs.
Technical scheme of the present invention is:
A kind of concrete folding plate floor slab structure of band shear key of improvement, former concrete folding plate floor comprises in-situ layer setting up and down and precast concrete base plate (abbreviation prefabricated panel), prefabricated panel is provided with shear key, prefabricated panel is connected with in-situ layer by shear key, form strong bonded structure, make two sides of the prefabricated panel of the concrete folding plate floor of original tape shear key the inclined-plane with bottom surface with angle of inclination into; In the both sides of prefabricated panel, overlap joint steel bar groove is set; Make four of prefabricated panel sides into rough surface.
The concrete folding plate floor slab structure of the band shear key of described improvement, the both sides of prefabricated panel arrange overlap joint steel bar groove for placing overlap joint reinforcing bar, the degree of depth of overlap joint steel bar groove is close to longitudinal reinforcement at the bottom of plate, overlap joint reinforcing bar is made effectively to transmit the tensile stress of moment of flexure generation due to the natural axis away from floor, the length of overlap joint steel bar groove is greater than the calculating anchorage length of plate bottom horizontal reinforcing bar, and the position of overlap joint steel bar groove is directly over plate bottom horizontal reinforcing bar.
The concrete folding plate floor slab structure of the band shear key of described improvement, four sides, when building, all make four side surface coarse by interfacial agents process.
The method of attachment of the concrete folding plate floor slab structure of the band shear key of described improvement, method of attachment between the concrete folding plate floor of the band shear key improved is, two pieces of prefabricated panel adjacent bevel surfaces docking of shear key will be arranged, then overlap joint reinforcing bar is arranged at the overlap joint steel bar groove place be connected, the equal calculating of moment of flexure that the diameter of overlap joint reinforcing bar is born according to the plate bottom horizontal reinforcing bar of prefabricated panel and overlap joint reinforcing bar is determined, finally on prefabricated panel, build in-situ layer, complete making and the connection of superimposed sheet floor.
The method of attachment of the concrete folding plate floor slab structure of the band shear key of described improvement, arrange that two pieces of prefabricated panel adjacent bevel surfaces of shear key are coarse inclined-plane, arrange overlap joint reinforcing bar at the overlap joint steel bar groove place be connected, the equal calculating of moment of flexure that the diameter of overlap joint reinforcing bar is born according to plate bottom horizontal reinforcing bar and overlap joint reinforcing bar is determined.
The method of attachment of the concrete folding plate floor slab structure of the band shear key of described improvement, the concrete folding plate floor of band shear key improved and the connection of side bar, the end of the prefabricated panel arranging shear key is taken on side bar, and its end is connected with the side of the threaded steel pole in pre-buried termination in the beam be embedded in advance in side bar, in beam, fixation steel plate is installed in threaded steel pole upper end, pre-buried termination, and hold-doun nut to be tightened against in beam on the threaded steel pole in pre-buried termination, fixation steel plate is contacted with prefabricated panel closely; Arrange the negative bending moment rib of side bar place plate at plate end, wherein one end of the negative bending moment rib of side bar place plate is supported on side bar, and the other end is supported on prefabricated panel; Concreting, completes the concrete folding plate floor of the band shear key of improvement and the connection of side bar.
The method of attachment of the concrete folding plate floor slab structure of the band shear key of described improvement, arranges that the end of the prefabricated panel of shear key is by being embedded in the threaded steel pole in pre-buried termination, fixation steel plate and hold-doun nut in the beam in side bar in advance, with side bar compact siro spinning technology; Arrange the negative bending moment rib of side bar place plate at plate end, wherein one end of the negative bending moment rib of side bar place plate is supported on side bar, and the other end is supported on prefabricated panel.
The method of attachment of the concrete folding plate floor slab structure of the band shear key of described improvement, the concrete folding plate floor of band shear key improved and the connection of central sill, take on central sill by the end of the prefabricated panel arranging shear key, the inclined-plane of two pieces of prefabricated panels is parallel with central sill; Place in the overlap joint steel bar groove of the prefabricated panel adjacent with central sill and overlap reinforcing bar, prefabricated panel is placed the negative bending moment rib of the central sill place plate perpendicular to prefabricated panel; When the negative bending moment rib of central sill place plate conflicts with shear key position, according to the negative bending moment rib of actual conditions encryption central sill place plate, it is made to avoid shear key; Concreting, completes the concrete folding plate floor of the band shear key of improvement and the connection of central sill.
The method of attachment of the concrete folding plate floor slab structure of the band shear key of described improvement, arrange that the end of the prefabricated panel of shear key is taken on central sill, the inclined-plane of two pieces of prefabricated panels is parallel with central sill; Place in the overlap joint steel bar groove of the prefabricated panel adjacent with central sill and overlap reinforcing bar, prefabricated panel is placed the negative bending moment rib of the central sill place plate perpendicular to prefabricated panel; Wherein, the negative bending moment rib two end supports of central sill place plate is on two pieces of prefabricated panels.
The present invention has following characteristics and beneficial effect:
1, the concrete folding plate floor slab structure of the band shear key of the present invention's improvement, it is compared with the concrete folding plate floor of original tape shear key: make two sides of the prefabricated panel of the concrete folding plate floor of original tape shear key the inclined-plane with bottom surface with certain angle of inclination into, add the contact area of in-situ layer and prefabricated panel; In the both sides of prefabricated panel, overlap joint steel bar groove is set, be convenient to place overlap joint reinforcing bar while make overlap joint reinforcing bar due to the natural axis away from superimposed sheet more effective deliver moment of flexure produce tensile stress; Rough surface is all made in four of prefabricated panel sides, adds the friction of prefabricated panel and in-situ layer.
2, the method for attachment of concrete folding plate floor of band shear key that improves of the present invention, places overlap joint reinforcing bar by the bar splicing groove that arranges at prefabricated panel, achieves the equivalence transmission of superimposed sheet structure reinforcement moment of flexure generation tensile stress; Adopt fixation steel plate and hold-doun nut by the threaded steel pole in termination pre-buried in beam, achieve fixing on side bar of prefabricated panel plate end; By arranging overlap joint reinforcing bar and the negative bending moment rib arranging central sill place plate in overlap joint steel bar groove, achieve the equivalence transmission that central sill both sides superimposed sheet moment of flexure produces tensile stress.
Thus, by above-mentioned measure, effectively increase the degree that is connected firmly of prefabricated panel and in-situ layer, the connection of superimposed sheet is facilitated to greatest extent, the reliability be connected between the concrete folding plate floor slab structure that fully ensure that the band shear key of improvement and with beam, meets actual requirement of engineering.
Accompanying drawing explanation
Fig. 1 is the prefabricated panel plan view of layout shear key of the present invention, overlap joint steel bar groove.
Fig. 2 is the sectional drawing of Fig. 1 along A-A direction.
Fig. 3 is the sectional drawing of Fig. 1 along B-B direction.
Fig. 4 is the sectional drawing of Fig. 1 along C-C direction.
Fig. 5 is the sectional drawing of Fig. 1 along D-D direction.
Fig. 6 is the connection plan view between the prefabricated panel of layout shear key, overlap joint steel bar groove.
Fig. 7 is the sectional drawing of Fig. 6 along E-E direction.
Fig. 8 is the superimposed sheet floor level figure formed after Fig. 6 upper concrete.
Fig. 9 is the sectional drawing of Fig. 8 along F-F direction.
Figure 10 arranges shear key, the overlap joint prefabricated panel of steel bar groove and the connection plan view of side bar.
Figure 11 is the sectional drawing of Figure 10 along G-G direction.
Figure 12 is the sectional drawing of Figure 10 along H-H direction.
Figure 13 is the negative bending moment rib schematic diagram of side bar place plate.
Figure 14 is the threaded steel pole in pre-buried termination in beam.
Figure 15 is the superimposed sheet floor level figure formed after Figure 10 upper concrete.
Figure 16 is the sectional drawing of Figure 15 along J-J direction.
Figure 17 arranges shear key, the overlap joint prefabricated panel of steel bar groove and the connection plan view of central sill.
Figure 18 is the sectional drawing of Figure 17 along K-K direction.
Figure 19 is the superimposed sheet floor level figure formed after Figure 17 upper concrete.
Figure 20 is the sectional drawing of Figure 19 along L-L direction.
Figure 21 is the negative bending moment rib schematic diagram of central sill place plate.
In figure, 1. prefabricated panel; 2. precast concrete shear key; 3. overlap joint steel bar groove; 4. inclined-plane; 5. longitudinal reinforcement at the bottom of plate; 6. plate bottom horizontal reinforcing bar; 7. overlap joint reinforcing bar; 8. in-situ layer; 9. side bar; 10. the negative bending moment rib of side bar place plate; 11. hold-doun nuts; 12. fixation steel plates; The threaded steel pole in pre-buried termination in 13. beams; 14. central sills; The negative bending moment rib of 15. central sill place plates; The concrete folding plate floor of the 16. band shear keies improved.
Detailed description of the invention
Former concrete folding plate floor comprises in-situ layer setting up and down and prefabricated panel, prefabricated panel is provided with shear key, prefabricated panel is connected with in-situ layer by shear key, forms strong bonded structure, but how to be connected between the concrete folding plate floor not relating to band shear key and with beam.The concrete folding plate floor slab structure of the band shear key that the present invention improves and method of attachment, its design philosophy is as follows:
(1) make two sides of the prefabricated panel of the concrete folding plate floor of original tape shear key the inclined-plane with bottom surface with certain angle of inclination into, arrange overlap joint steel bar groove in the both sides of prefabricated panel, four sides of prefabricated panel all make rough surface into.
(2) at the bottom of two sides of prefabricated panel and plate, there is certain angle of inclination, the contact area of prefabricated panel side and in-situ layer can be increased, make prefabricated panel and in-situ layer, connection between prefabricated panel and prefabricated panel more firm.
(3) both sides of prefabricated panel arrange overlap joint steel bar groove can be used for place overlap joint reinforcing bar, the degree of depth of overlap joint steel bar groove is to be advisable close to longitudinal reinforcement at the bottom of plate as far as possible, thus make overlap joint reinforcing bar more effectively transmit the tensile stress of moment of flexure generation due to the natural axis away from superimposed sheet, the length of overlap joint steel bar groove is greater than the calculating anchorage length of plate bottom horizontal reinforcing bar, and the position of overlap joint steel bar groove should directly over plate bottom horizontal reinforcing bar.
(4) four sides, when building, all by interfacial agents process, make four side surface coarse, to increase the friction of prefabricated panel side and in-situ layer, prefabricated panel are connected with in-situ layer more firm.
(5) connection between the concrete folding plate floor of the band shear key improved, it will arrange two pieces of prefabricated panel adjacent bevel surfaces docking of shear key, then in the overlap joint steel bar groove be connected, overlap joint reinforcing bar is arranged, finally on prefabricated panel, build in-situ layer, complete the connection between the making of superimposed sheet floor and superimposed sheet floor.
(6) connection between the concrete folding plate floor of the band shear key improved, it arranges that the inclined-plane that connects of two pieces of prefabricated panels of shear key is rough surface, is conducive to forming firm connection between prefabricated panel and with in-situ layer.
(7) connection between the concrete folding plate floor of the band shear key improved, arranges overlap joint reinforcing bar in the overlap joint steel bar groove be connected, and the equal calculating of moment of flexure that the diameter of overlap joint reinforcing bar can be born according to plate bottom horizontal reinforcing bar and overlap joint reinforcing bar is determined.
(8) the concrete folding plate floor of the band shear key improved and the connection of side bar: the end of the prefabricated panel arranging shear key is taken on side bar by it, and its end is connected with the side of the threaded steel pole in pre-buried termination in the beam be embedded in advance in side bar; In beam, fixation steel plate is installed in threaded steel pole upper end, pre-buried termination, and to be tightened against by hold-doun nut in beam on the threaded steel pole in pre-buried termination, and fixation steel plate is contacted with prefabricated panel closely; Arrange the negative bending moment rib of side bar place plate at plate end, wherein one end of the negative bending moment rib of side bar place plate is supported on side bar, and the other end is supported on prefabricated panel; Concreting, completes the concrete folding plate floor of the band shear key of improvement and the connection of side bar.
(9) the concrete folding plate floor of the band shear key improved and the connection of side bar, arrange that the end of the prefabricated panel of shear key is by being embedded in the threaded steel pole in pre-buried termination, fixation steel plate and hold-doun nut in the beam in side bar in advance, with side bar compact siro spinning technology.
(10) the concrete folding plate floor of the band shear key improved and the connection of side bar, arrange the negative bending moment rib of side bar place plate at plate end, wherein one end of the negative bending moment rib of side bar place plate is supported on side bar, and the other end is supported on prefabricated panel.
(11) the concrete folding plate floor of the band shear key improved and the connection of central sill: take on central sill by the end of the prefabricated panel arranging shear key, the inclined-plane of two pieces of prefabricated panels is parallel with central sill; Place in the overlap joint steel bar groove of the prefabricated panel adjacent with central sill and overlap reinforcing bar, prefabricated panel is placed the negative bending moment rib of the central sill place plate perpendicular to prefabricated panel; When the negative bending moment rib of central sill place plate conflicts with shear key position, according to the negative bending moment rib of actual conditions encryption central sill place plate, it is made to avoid shear key; Concreting, completes the concrete folding plate floor of the band shear key of improvement and the connection of central sill.
(12) the concrete folding plate floor of the band shear key improved and the connection of central sill, arrange that the end of the prefabricated panel of shear key is taken on central sill, the inclined-plane of two pieces of prefabricated panels is parallel with central sill.
(13) the concrete folding plate floor of the band shear key improved and the connection of central sill, place in the overlap joint steel bar groove of the prefabricated panel adjacent with central sill and overlap reinforcing bar, prefabricated panel is placed the negative bending moment rib of the central sill place plate perpendicular to prefabricated panel, realizes the transmission of superimposed sheet hogging moment.
(14) the concrete folding plate floor of the band shear key improved and the connection of central sill, when the negative bending moment rib of central sill place plate conflicts with shear key position, according to the negative bending moment rib of actual conditions encryption central sill place plate, make it avoid shearing resistance.
Below, with reference to the accompanying drawings the present invention is elaborated further:
As Figure 1-Figure 5, the present invention is provided with precast concrete shear key 2 on prefabricated panel 1, the shearing that bears and pulling force is needed according to precast concrete shear key 2, precast concrete shear key 2 is uniformly distributed on prefabricated panel 1, and the side of prefabricated panel 1 and bottom surface are the inclined-planes 4 with certain angle of inclination.Be provided with overlap joint steel bar groove 3 in the both sides of prefabricated panel 1 end face, at the bottom of the plate of prefabricated panel 1, be provided with longitudinal reinforcement 5 at the bottom of plate and plate bottom horizontal reinforcing bar 6.
As shown in Fig. 6-Fig. 9, the connection between the band shear key prefabricated panel 1 of improvement, its syndeton and method of attachment as follows:
(1) will arrange that two pieces of prefabricated panel 1 adjacent bevel surfaces 4 of precast concrete shear key 2 dock (see Fig. 6-Fig. 7);
(2) arrange overlap joint reinforcing bar 7 at overlap joint steel bar groove 3 place be connected, the equal calculating of moment of flexure that the diameter of overlap joint reinforcing bar 7 can be born according to the plate bottom horizontal reinforcing bar 6 of prefabricated panel 1 and overlap joint reinforcing bar 7 is determined;
(3) after having connected, prefabricated panel 1 is built in-situ layer 8, two pieces of prefabricated panels 1 by overlap joint reinforcing bar 7 with the cast-in-situ concrete at inclined-plane 4 place that connects and connect into strong construction by the in-situ layer 8 that precast concrete shear key 2 is connected with prefabricated panel 1, thus complete the concrete folding plate floor 16 of the band shear key of improvement making and between connection (see Fig. 8-Fig. 9).
As shown in Figure 10-Figure 16, the connection of the band shear key prefabricated panel of improvement 1 and side bar 9, its syndeton and method of attachment as follows:
(1) end of the prefabricated panel 1 arranging precast concrete shear key 2 is taken on side bar 9, and make the end of prefabricated panel 1 connect (see Figure 10-Figure 11) with the side of the threaded steel pole 13 in pre-buried termination in the beam be embedded in advance in side bar 9;
(2) in beam, fixation steel plate 12 is installed in the threaded steel pole 13 in pre-buried termination upper end, and hold-doun nut 11 is tightened against on the threaded steel pole 13 in pre-buried termination in beam, fixation steel plate 12 is contacted with prefabricated panel 1 closely (see Figure 10-Figure 14);
(3) negative bending moment rib 10 of side bar place plate is arranged at the plate end of prefabricated panel 1, wherein: the negative bending moment rib 10 of side bar place plate is the perpendicular muscle composition at horizontal bar and two ends thereof, and the perpendicular muscle of one end is longer than the perpendicular muscle of the other end; One end of the negative bending moment rib 10 of side bar place plate is supported on side bar 9, and the other end of the negative bending moment rib 10 of side bar place plate is supported in (see Figure 10-Figure 14) on prefabricated panel 1;
(4) on prefabricated panel 1 and side bar 9, concreting forms in-situ layer 8, completes the making of the concrete folding plate floor 16 of the band shear key of improvement and the connection (see Figure 15-Figure 16) with side bar 9 thereof.
As shown in Figure 17-Figure 21, the connection of the band shear key prefabricated panel of improvement 1 and central sill 14, its syndeton and method of attachment as follows:
(1) take on central sill 14 by the end of the prefabricated panel 1 arranging precast concrete shear key 2, the inclined-plane 4 of two pieces of prefabricated panels 1 is parallel with central sill 14 (see Figure 17-Figure 18);
(2) place in the overlap joint steel bar groove 3 of the prefabricated panel 1 adjacent with central sill 14 and overlap reinforcing bar 7, prefabricated panel 1 is placed the negative bending moment rib 15 of the central sill place plate perpendicular to prefabricated panel 1, the negative bending moment rib 15 of central sill place plate is the perpendicular muscle composition at horizontal bar and two ends thereof, and the perpendicular muscle length at two ends is identical; When the negative bending moment rib 15 of central sill place plate conflicts with precast concrete shear key 2 position, the negative bending moment rib 15 of central sill place plate can be encrypted according to actual conditions, make it can avoid precast concrete shear key 2 (see Figure 17-Figure 18, Figure 21);
(3) on prefabricated panel 1 and central sill 14, concreting forms in-situ layer 8, the making completing the concrete folding plate floor 16 of the band shear key of improvement with and with the connection (see Figure 19-Figure 20) of central sill 14.
Embodiment result shows, the concrete folding plate floor slab structure of the band shear key that the present invention improves and method of attachment, by shear key, prefabricated panel and concrete cast-in-situ layer are connected into overall floor, bear shearing therebetween and pulling force by anti-shear concrete key, transmit by the overlap joint reinforcing bar equivalence arranged in overlap joint steel bar groove the tensile stress that reinforcement moment of flexure produces; Adopt fixation steel plate and hold-doun nut by the threaded steel pole in termination pre-buried in beam, achieve fixing on side bar of prefabricated panel plate end; By arranging overlap joint reinforcing bar and the negative bending moment rib arranging central sill place plate in overlap joint steel bar groove, achieve the transmission that central sill both sides superimposed sheet moment of flexure produces tensile stress; The contact area of junction in-situ layer and prefabricated panel is increased by inclined-plane; By rough surface is made in four of plate sides, increase the friction of prefabricated panel and in-situ layer.Be connected between the concrete folding plate floor that above-mentioned measure fully ensure that the band shear key of improvement and with side bar and the reliable of central sill, meet actual requirement of engineering.
Claims (9)
1. the concrete folding plate floor slab structure of the band shear key improved, former concrete folding plate floor comprises in-situ layer setting up and down and precast concrete base plate is called for short prefabricated panel, prefabricated panel is provided with shear key, prefabricated panel is connected with in-situ layer by shear key, form strong bonded structure, it is characterized in that: the inclined-plane two sides of the prefabricated panel of the concrete folding plate floor of original tape shear key being made to have with bottom surface into angle of inclination; In the both sides of prefabricated panel, overlap joint steel bar groove is set; Make four of prefabricated panel sides into rough surface.
2. according to the concrete folding plate floor slab structure of the band shear key of improvement according to claim 1, it is characterized in that: the both sides of prefabricated panel arrange overlap joint steel bar groove for placing overlap joint reinforcing bar, the degree of depth of overlap joint steel bar groove is close to longitudinal reinforcement at the bottom of plate, overlap joint reinforcing bar is made effectively to transmit the tensile stress of moment of flexure generation due to the natural axis away from floor, the length of overlap joint steel bar groove is greater than the calculating anchorage length of plate bottom horizontal reinforcing bar, and the position of overlap joint steel bar groove is directly over plate bottom horizontal reinforcing bar.
3. according to the concrete folding plate floor slab structure of the band shear key of improvement according to claim 1, it is characterized in that: four sides, when building, all make four side surface coarse by interfacial agents process.
4. according to the method for attachment of the concrete folding plate floor slab structure of the band shear key of improvement according to claim 1, it is characterized in that: the method for attachment between the concrete folding plate floor of the band shear key of improvement is, two pieces of prefabricated panel adjacent bevel surfaces docking of shear key will be arranged, then overlap joint reinforcing bar is arranged at the overlap joint steel bar groove place be connected, the equal calculating of moment of flexure that the diameter of overlap joint reinforcing bar is born according to the plate bottom horizontal reinforcing bar of prefabricated panel and overlap joint reinforcing bar is determined, finally on prefabricated panel, build in-situ layer, complete making and the connection of superimposed sheet floor.
5. according to the method for attachment of the concrete folding plate floor slab structure of the band shear key of improvement according to claim 4, it is characterized in that: arrange that two pieces of prefabricated panel adjacent bevel surfaces of shear key are coarse inclined-plane, arrange overlap joint reinforcing bar at the overlap joint steel bar groove place be connected, the equal calculating of moment of flexure that the diameter of overlap joint reinforcing bar is born according to plate bottom horizontal reinforcing bar and overlap joint reinforcing bar is determined.
6. according to the method for attachment of the concrete folding plate floor slab structure of the band shear key of improvement according to claim 1, it is characterized in that: the concrete folding plate floor of the band shear key of improvement and the connection of side bar, the end of the prefabricated panel arranging shear key is taken on side bar, and its end is connected with the side of the threaded steel pole in pre-buried termination in the beam be embedded in advance in side bar, in beam, fixation steel plate is installed in threaded steel pole upper end, pre-buried termination, and hold-doun nut to be tightened against in beam on the threaded steel pole in pre-buried termination, fixation steel plate is contacted with prefabricated panel closely; Arrange the negative bending moment rib of side bar place plate at plate end, wherein one end of the negative bending moment rib of side bar place plate is supported on side bar, and the other end is supported on prefabricated panel; Concreting, completes the concrete folding plate floor of the band shear key of improvement and the connection of side bar.
7. according to the method for attachment of the concrete folding plate floor slab structure of the band shear key of improvement according to claim 6, it is characterized in that: arrange that the end of the prefabricated panel of shear key is by being embedded in the threaded steel pole in pre-buried termination, fixation steel plate and hold-doun nut in the beam in side bar in advance, with side bar compact siro spinning technology; Arrange the negative bending moment rib of side bar place plate at plate end, wherein one end of the negative bending moment rib of side bar place plate is supported on side bar, and the other end is supported on prefabricated panel.
8. according to the method for attachment of the concrete folding plate floor slab structure of the band shear key of improvement according to claim 1, it is characterized in that: the concrete folding plate floor of the band shear key of improvement and the connection of central sill, take on central sill by the end of the prefabricated panel arranging shear key, the inclined-plane of two pieces of prefabricated panels is parallel with central sill; Place in the overlap joint steel bar groove of the prefabricated panel adjacent with central sill and overlap reinforcing bar, prefabricated panel is placed the negative bending moment rib of the central sill place plate perpendicular to prefabricated panel; When the negative bending moment rib of central sill place plate conflicts with shear key position, according to the negative bending moment rib of actual conditions encryption central sill place plate, it is made to avoid shear key; Concreting, completes the concrete folding plate floor of the band shear key of improvement and the connection of central sill.
9. according to the method for attachment of the concrete folding plate floor slab structure of the band shear key of improvement according to claim 8, it is characterized in that: arrange that the end of the prefabricated panel of shear key is taken on central sill, the inclined-plane of two pieces of prefabricated panels is parallel with central sill; Place in the overlap joint steel bar groove of the prefabricated panel adjacent with central sill and overlap reinforcing bar, prefabricated panel is placed the negative bending moment rib of the central sill place plate perpendicular to prefabricated panel; Wherein, the negative bending moment rib two end supports of central sill place plate is on two pieces of prefabricated panels.
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| CN108678248A (en) * | 2018-07-12 | 2018-10-19 | 广州大学 | A kind of modular unit transverse connection structure and its construction technology |
| CN109278182A (en) * | 2018-11-09 | 2019-01-29 | 沈阳建筑大学 | The making apparatus and production method and assembling method of rolling-type prefabricated panel |
| CN109537788A (en) * | 2018-11-22 | 2019-03-29 | 中耕耘成建筑科技(江苏)有限公司 | A kind of concrete folding plate with very-high performance |
| CN109537788B (en) * | 2018-11-22 | 2020-09-01 | 中耕耘成建筑科技(江苏)有限公司 | Concrete superimposed sheet with ultra-high performance |
| CN110094006A (en) * | 2019-05-27 | 2019-08-06 | 沈阳建筑大学 | A kind of assembled superimposed sheet and its assembly method |
| CN110258884A (en) * | 2019-06-12 | 2019-09-20 | 湖南固可得建筑科技有限公司 | A kind of fire prevention combination floor support plate |
| CN110778011A (en) * | 2019-11-07 | 2020-02-11 | 三一筑工科技有限公司 | Concrete precast slab, connecting structure and construction method thereof |
| CN110778011B (en) * | 2019-11-07 | 2023-12-05 | 三一筑工科技股份有限公司 | Concrete precast slab, connecting structure and construction method thereof |
| CN113250449A (en) * | 2021-06-21 | 2021-08-13 | 江苏昊钢建筑科技有限公司 | Assembled steel bar truss building carrier plate |
| CN114645596A (en) * | 2022-05-24 | 2022-06-21 | 中铁九局集团第四工程有限公司 | Structure and construction method for retaining beard ribs behind precast concrete laminated slab |
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