CN210713360U - Filler wall frame structure of GFRP reinforced flexible connection - Google Patents
Filler wall frame structure of GFRP reinforced flexible connection Download PDFInfo
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- CN210713360U CN210713360U CN201921289894.5U CN201921289894U CN210713360U CN 210713360 U CN210713360 U CN 210713360U CN 201921289894 U CN201921289894 U CN 201921289894U CN 210713360 U CN210713360 U CN 210713360U
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Abstract
The patent discloses a GFRP consolidates bulkhead frame structure of flexonics belongs to the building engineering antidetonation and consolidates the technical field. The gaps between the filling wall and the frame beams and columns of the structure are filled with fireproof heat-insulating materials, and the overall rigidity of the frame structure can be reduced through the flexible connection of the wall and the frame. The bottom of top frame roof beam sets up two U shaped steel boards and is spacing to the infilled wall, improves the stability outside the plane. The utility model discloses a GFRP net cloth consolidates the infilled wall frame of flexible connection structure can effectively compensate the not enough defect of infilled wall plane outer bearing capacity. According to the plane external failure mode of the filler wall, GFRP oblique crossing type reinforcement is designed, the area of a reinforcement area is reduced, and implementation steps are simplified. The self-made anchorage device at the rhombic intersection of the wall surface increases the adhesive force between the GFRP gridding cloth and the wall surface. By utilizing the characteristics of light weight, high strength, corrosion resistance and the like of GFRP, the integrity and the collapse resistance of the filler wall are effectively improved.
Description
Technical Field
The utility model belongs to the technical field of building engineering antidetonation is consolidated, concretely relates to GFRP consolidates flexible connection's infilled wall frame construction.
Background
The infilled wall frame structure is one of widely used structural systems in the building engineering of China, and a plurality of researches show that the infilled wall has an adverse constraint effect on the whole frame structure, while the existing specifications of China regard the infilled wall as a non-structural member and ignore the influence of the infilled wall on the whole rigidity of the frame structure. The construction of the filler wall is simple and efficient, and rigid connection is generally adopted, so that the damage degree of the frame structure in the earthquake is higher than that of the theoretical design. The flexible connection between the wall and the frame can conveniently avoid the phenomenon, and gaps between the filling wall and the frame columns on the two sides and the frame beam above the filling wall are filled with the fireproof rock wool heat preservation plates. The flexible connection not only can effectively improve the adverse constraint effect of the filler wall on the reinforced concrete frame, but also can improve the overall energy consumption of the frame.
The transformation mode of the flexible connection between the wall and the frame appears in various forms along with the development of scientific research level, most researchers concentrate on the anti-seismic performance of the filled wall frame in a plane, and neglect the defect that the bearing capacity of the filled wall frame is insufficient outside the plane. Multiple earthquake disasters show that the out-of-plane collapse of the filler wall poses great threat to personal and property safety, the earthquake effect is random, the collapse resistance of the flexibly connected filler wall frame structure is weaker than that of the rigid connection outside the plane, the effect of reducing the overall restraint of the filler wall on the frame is unreasonable only by simply considering the flexible connection between the wall and the frame, and the improvement of the out-of-plane bearing capacity of the flexibly connected filler wall frame structure has great necessity, namely the problem that the out-of-plane bearing capacity of the filler wall frame structure in the prior art is insufficient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that the outer bearing capacity of infilled wall frame construction flexonics plane is not enough, propose to adopt a GFRP to consolidate flexonics's infilled wall frame construction.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a GFRP reinforced flexibly connected infilled wall frame structure comprises frame beams, frame columns, infilled walls in a frame, U-shaped steel plates, heat-insulating plates and GFRP grid fixing bands,
the U-shaped steel plate is welded at the bottom of the upper frame beam of the frame structure of the infilled wall, so that the infilled wall is prevented from suddenly and integrally collapsing after the GFRP grid fixing bands are pulled apart and sheared off in an earthquake, the boundary constraint of the infilled wall is increased,
gaps among the filler wall, the upper frame beam and the frame columns on the two sides are filled with heat insulation boards, so that the filler wall is prevented from shearing and damaging the joints of the frame beams and the frame columns,
the GFRP grid fixing band is glued on the outer surface of the frame structure of the filler wall, the ductility of the frame structure of the filler wall is improved, the brittle failure of the whole structure is avoided, anchor holes penetrating through the filler wall are formed in the cross positions of the GFRP grid fixing band, and anchors are installed in the anchor holes.
Preferably, the GFRP grid fixing bands are crossed and wound in a diamond shape to be glued on the frame structure of the filler wall, so that the tensile property of the GFRP can be utilized to the maximum degree, and the reinforcing cost is reduced.
Preferably, the anchor passes the GFRP net fixed band injecting glue of infilled wall building block and the crossing looks department of GFRP net fixed band is connected, and the reason lies in verifying the bonding effect of infilled wall and GFRP net fixed band generally through a great deal of experiments, can lead to GFRP and the large-scale peeling off of wall body under the loading effect, consequently the utility model discloses the use runs through the building block anchor and handles, strengthens GFRP and wall body cohesiveness and avoids reducing the reinforcing effect because of GFRP's peeling off.
Preferably, the diameter of the hole of the anchor hole is 8-10 mm.
Has the advantages that: the infilled wall frame structure of this patent adopts the form of wall-frame flexible connection to weaken the adverse restraint of infilled wall to frame construction. The GFRP reinforced flexible connection infilled wall frame structure is tested by the institute of engineering mechanics of the earthquake Bureau of China, the inside and outside combined loading of a plane is carried out in the test, after the loading of 1% interlayer displacement angle in the plane, the external bearing capacity of the infilled wall surface with the GFRP grid fixing band pasted is improved by 60% compared with that of a common infilled wall, and the energy consumption capacity in the plane of the GFRP reinforced flexible connection infilled wall frame structure is improved by 15% compared with that of a common solid infilled wall. And the GFRP reinforced flexibly connected filler wall frame structure has better ductility compared with a common filler wall, and GFRP grid fixing belts are bonded with the surface of the filler wall to replace the filler wall to share part of the internal and external loads, so that the GFRP reinforced flexibly connected filler wall frame structure in a failure mode can better ensure the integrity of the filler wall compared with the common filler wall, and the integral collapse in earthquake damage is avoided.
Moreover, the cross part of the GFRP grid fixing band is anchored, so that the cohesiveness of the GFRP grid fixing band and the filler wall is improved, and the tensile property of the GFRP is fully exerted. GFRP net fixed band is alternately posted along infilled wall destruction form, improves GFRP's utilization ratio, reduces reinforced area. The GFRP grid fixing band is made of light materials and high in tensile strength, and is efficient and easy to operate when used for reinforcing a filler wall.
Drawings
Fig. 1 is an overall block diagram of a GFRP reinforced flexibly connected infill wall frame.
Fig. 2 is a frame structure construction diagram of a GFRP reinforced flexibly connected infill wall frame.
Fig. 3 is a block diagram of a filler wall frame construction for GFRP reinforced flexibly connected filler wall frames.
Fig. 4 is a partial schematic view of the anchoring of a GFRP reinforced flexibly connected infill wall frame.
Fig. 5 is a partial schematic view of the anchor holes of a GFRP reinforced flexibly connected infilled wall frame.
Fig. 6 is a schematic illustration of the effect of GFRP on anchoring of flexibly connected infill wall frames.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of the present patent. All other embodiments, which can be derived by a person skilled in the art from the embodiments given in this patent without making any creative effort, shall fall within the protection scope of the present invention.
The design, implementation and considerations of the present invention are explained in detail below.
Example 1
In this example, the GFRP mesh fixing band 6 is EWR400 glass fiber cloth, and the adhesive materials of the GFRP mesh fixing band 6, the frame column 1, the frame beam 2, and the filler wall 3 are vinyl resin adhesives.
And the building blocks 3-1 for building the filler wall 3 are autoclaved aerated concrete.
The heat insulation board 5 is a fireproof rock wool heat insulation board.
The anchoring holes 7 are made of GFRP mesh fixing bands 6, and the diameter of each anchoring hole 7-1 is 8-10 mm.
The manufacturing material of the anchoring 7 is the GFRP mesh fixing band 6, the GFRP mesh fixing band 6 for manufacturing the anchoring 7 is cut according to the diameter of the anchoring hole 7-1 and the thickness of the filler wall 3, the length of the cut GFRP mesh fixing band 6 is about 160 plus materials 200mm longer than the thickness of the filler wall 3, the anchoring 7 at each end is exposed out of the wall body by 80-100mm, then the corresponding square mesh cloth is cut out, the square mesh cloth is compacted and rolled up along one side, when the rolling diameter is slightly smaller than the diameter of the anchoring hole 7-1, a fiber wire is taken to be wound and bundled along one end of the anchoring 7, the rolled mesh cloth is prevented from being separated, and the anchoring 7 is the anchoring 7, as shown in figure 4.
The GFRP reinforced flexible connection infilled wall frame structure is constructed as follows:
1) the frame structure of the filler wall comprises a frame column 1, a frame beam 2 and a filler wall 3 in a frame,
firstly, reinforcing bars are arranged on the frame columns 1 and the frame beams 2, the bottom of the upper frame beam 2 is welded with a U-shaped steel plate 4 before a frame formwork is erected, and the pre-embedded position of the U-shaped steel plate 4 refers to the un-reinforced triangular area at the bottom of the upper frame beam 2 in fig. 2. Then, the frame columns 1 on the two sides are pre-embedded with through long tie bars 8, and one tie bar 8 is arranged every two bricks. And after the pre-embedded members are treated, the integral pouring is carried out, after the construction of the frame is finished, the heat insulation plates 5 are placed along the inner sides of the frame columns 1 on the two sides and the frame beam 2 above, the thickness of each heat insulation plate 5 is about 20-30mm, and gaps among the heat insulation plates 5, the frame beam 2 and the frame columns 1 are sealed by adopting polyurethane sealant.
And after the components are arranged, the construction of the filler wall 3 is carried out, when the filler wall 3 is constructed, the whole building blocks 3-1 of the filler wall 3 are on the same horizontal plane, mortar joint mortar is kept full, so that the construction of a GFRP grid fixing band 6 is facilitated in the later period, and after the construction is finished, a gap between the filler wall 3 and the heat insulation board 5 is sealed by polyurethane sealant.
The step is completed to construct the flexible connection, and the frame structure of the infilled wall is obtained, as shown in fig. 3.
2) And drilling anchor holes 7-1 after the maintenance of the infilled wall 3 of the infilled wall frame structure is finished, wherein the positions of the anchor holes 7-1 are shown in figure 1, the anchor holes 7-1 penetrate through the infilled wall 3, and the diameter of the anchor holes 7-1 is 8-10mm, as shown in figure 5. After the construction of the anchor hole 7-1 is completed, the anchor hole 7-1 and the surface dust are cleaned, then the anchor hole 7 is penetrated into the anchor hole 7-1, the fiber yarns wound at the two ends of the anchor 7 are taken out, so that the fiber yarns at the two ends of the anchor 7 manufactured by the GFRP grid fixing band 6 are naturally scattered, and the scattering effect of the fiber yarns of the anchor 7 is shown in figure 6.
3) The GFRP grid fixing band 6 reinforcing and pasting method is constructed according to the construction steps in the technical specification of reinforcing and repairing concrete by carbon fiber sheets, and the specific construction method is as follows:
3.1) firstly carrying out substrate treatment on the reinforced area, marking the positions of the reinforced area on the frame column 1, the frame beam 2 and the filler wall 3 by chalk before the substrate treatment, then removing stains and redundant mortar on the surface of the filler wall 3 by a grinding machine to expose a bonding surface between the filler wall 3 and the concrete surface, and finally cleaning the ground bonding surface to keep the reinforced area clean and flat.
In this example, the glue used exclusively for adhering the GFRP mesh fixing tape 6 is a vinyl resin, and the glue does not solidify in a natural state, and a certain amount of a curing agent and a catalyst need to be added. According to the technical indexes provided by manufacturers, the curing agent is methyl ethyl ketone, the catalyst is cobalt naphthoate, the ratio of the vinyl resin to the methyl ethyl ketone to the cobalt naphthoate is 1:0.03:0.007, and the colloid ratio can be adjusted slightly according to the construction time.
3.2) GFRP net fixed band 6 adopts the cross to paste in infilled wall 3, simultaneously, further pastes GFRP net fixed band 6 to infilled wall 3 fragile region and reinforces emphatically, makes the reinforcing effect maximize.
When pasting, the prepared GFRP grid fixing band 6 is rolled up, a roller and a brush are adopted to brush the resin adhesive on the area needing to be filled with the wall frame structure for reinforcement (the area for brushing is determined according to the number of construction people), and then the surface of the GFRP grid fixing band 6 is uniformly brushed with the adhesive. The GFRP mesh fixing band 6 after being coated is closely adhered to an area needing to be reinforced, a pneumatic hard plate is arranged on the surface of the GFRP mesh fixing band 6 to extrude the GFRP mesh fixing band, and when the GFRP mesh fixing band 6 is adhered to an anchoring area, a glue gun or a needle tube is used for injecting glue into the anchor hole 7-1 until the glue overflows from the other side of the anchor hole 7-1.
And after the filled wall frame is bonded and cured for 6-10 days, the GFRP reinforced flexibly connected filled wall frame structure is obtained, as shown in figure 1.
Example 2
And (3) obtaining the GFRP reinforced flexibly connected infilled wall frame structure according to the construction method of the embodiment 1.
A GFRP reinforced flexibly connected infilled wall frame structure is shown in figure 1, and comprises frame beams 1, frame columns 2, infilled walls 3 in a frame, U-shaped steel plates 4, heat-insulating plates 5 and GFRP grid fixing bands 6,
the bottom of the upper frame beam 2 is welded with a U-shaped steel plate 4, gaps among the filler wall 3, the upper frame beam 2 and the frame columns 1 at two sides are filled with heat insulation plates 5,
the GFRP grid fixing band 6 is glued on the outer surface of the frame structure of the infilled wall, an anchor hole 7-1 penetrating through the infilled wall 3 is formed at the cross position of the GFRP grid fixing band 6, and an anchor 7 is installed in the anchor hole 7-1.
The GFRP reinforced flexibly connected infilled wall frame structure of the embodiment is subjected to plane inside and outside combined loading test under the conditions provided by the institute of engineering mechanics of the earthquake Bureau of China (Harbin), and meanwhile, a common infilled wall frame structure is set as a reference group for synchronous test, the two groups of test steps are the same, and the method specifically comprises the following steps:
1) and (3) carrying out vertical loading, wherein the axial pressure ratio of the column end is 0.4, the target value is 321.6KN, and the loading gradient is 0.5N/S.
2) And after the vertical loading is finished, carrying out in-plane loading, wherein the in-plane loading adopts cyclic reciprocating pseudo-static loading and is cooperatively controlled by load-displacement, the loading gradient of the load is 10KN/S, the displacement loading is increased according to the multiple of yield displacement, and the target value is 1% of the interlayer displacement angle.
3) And after the in-plane loading is finished, carrying out in-plane unloading. And after unloading, performing out-of-plane loading, wherein four-point distribution is adopted for the loading of the self-made steel structure outside the plane, the loading points are four points of the filler wall, the loading mode adopts one-way monotonous loading, the out-of-plane loading is also subjected to load-displacement cooperative control, and a force-displacement curve is observed. Meanwhile, load control is adopted in the test, the gradient is 1KN, when obvious yield change occurs outside the plane, displacement control is adopted, the loading gradient is 1mm, and when the loading is 80% of the peak load or the displacement is 50mm (50% of the thickness of the wall body), the structure is determined as a final failure mode.
It should be noted that the common infill wall frame structure and the GFRP reinforced flexible connected infill wall frame structure of this example are made of the same material. The frame structure of the common infilled wall comprises a frame beam 1, a frame column 2 and an infilled wall 3 in the frame, wherein the frame of the frame structure of the common infilled wall adopts a frame which is the same as the frame structure of the infilled wall in GFRP reinforced flexible connection, the frame reinforcing bars are the same, the building blocks used by the infilled wall 3 are the same, and the frame is built by the same skilled bricklayer.
Test results show that after the frame structure of the common filler wall of the control group is damaged in a plane, the bearing capacity outside the plane is 50 KN. The load is applied under the same condition in the plane, the bearing capacity outside the plane is up to 80KN, and the load is improved by 60 percent compared with the common filler wall. The integrity of the GFRP after the out-of-plane damage is superior to that of a contrast group common solid filled wall, and the filled wall after GFRP reinforcement has high energy consumption capability, so that the lateral resistance of the structure is improved.
The GFRP reinforced flexible connection infilled wall frame structure adopts a wall-frame flexible connection mode to weaken the adverse constraint of the infilled wall on the frame structure, improves the ductility of the infilled wall frame structure, avoids fragile damage of the whole structure, effectively improves the self bearing capacity of the wall body, avoids the infilled wall from collapsing too early, and GFRP grid fixing bands are alternately posted along the infilled wall damage mode, so that the utilization rate of the GFRP is improved, the reinforced area is reduced, and finally, the GFRP grid fixing bands are light in material and high in tensile property, and are efficient and easy to operate as the reinforcing construction of the infilled wall.
In addition, the cross part of the GFRP grid fixing band is anchored, so that the cohesiveness of the GFRP grid fixing band and the filler wall is improved, and the tensile property of the GFRP is fully exerted.
It should be noted that, when the filler wall 3 is not anchored, it is found that the wall body and the GFRP grid fixing band 6 are peeled off in the adhesion test of the filler wall 3 and the GFRP grid fixing band 6, so that the advantage of high tensile strength of the GFRP cannot be fully exerted, and the reinforcing effect cannot reach an ideal state. The purpose of adopting anchor 7 for anchoring is also to make up for the defect, so the anchor 7 is made of the GFRP grid fixing band 6, the bonding force between the infilled wall 3 and the GFRP grid fixing band 6 is increased, and the characteristic of high tensile property of GFRP is fully utilized. And repeating the steps to carry out the pasting on each GFRP grid fixing band 6, checking the pasting effect after the pasting is finished, and carrying out glue supplementing treatment on the place with weaker pasting force.
It does to go up the utility model discloses embodiment, a GFRP consolidates filled wall frame construction make full use of GFRP's light, intensity height, elasticity are good, advantage such as corrosion-resistant, use GFRP to flexonics's filled wall frame, improve the not enough shortcoming of flexonics plane outer bearing capacity.
The utility model discloses there is still improvement and the decoration within a certain limit, is not deviating from the utility model discloses an equal change on technical implementation and the principle basis all belongs to the utility model discloses a protection scope. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be interchanged with other features disclosed in this application, but not limited to those having similar functions.
Claims (4)
1. A GFRP reinforces the packing wall frame construction of the flexible connection, the said packing wall frame construction includes the frame beam, frame column and packing wall in the frame;
it is characterized in that the utility model is characterized in that,
also comprises a U-shaped steel plate, a heat insulation plate and a GFRP grid fixing band,
the U-shaped steel plate is welded at the bottom of the upper frame beam of the frame structure of the infilled wall to increase the boundary constraint of the infilled wall,
gaps among the filler wall, the upper frame beam and the frame columns on the two sides are filled with heat insulation boards, so that the filler wall is prevented from shearing and damaging the joints of the frame beams and the frame columns,
the GFRP grid fixing band is glued on the outer surface of the frame structure of the infilled wall, the ductility of the frame structure of the infilled wall is improved, the brittle failure of the whole structure is avoided,
in addition, the cross part of the GFRP grid fixing band is provided with an anchor hole penetrating through the filler wall, and an anchor is arranged in the anchor hole.
2. The GFRP reinforced flexibly connected infill wall frame structure of claim 1, wherein said GFRP mesh retention strip diamond cross wrap adhesive bonds said infill wall frame structure.
3. The GFRP reinforced flexibly connected infilled wall frame structure according to claim 1, characterized in that the anchors are through glue injected connection of the GFRP mesh fixing tape at the intersection of the infilled wall blocks with the GFRP mesh fixing tape.
4. The GFRP reinforced flexibly connected infill wall frame structure of claim 1, wherein said anchor holes have a hole diameter of 8-10 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921289894.5U CN210713360U (en) | 2019-08-09 | 2019-08-09 | Filler wall frame structure of GFRP reinforced flexible connection |
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| CN201921289894.5U CN210713360U (en) | 2019-08-09 | 2019-08-09 | Filler wall frame structure of GFRP reinforced flexible connection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980211A (en) * | 2020-09-21 | 2020-11-24 | 华侨大学 | Flexible connection spare and prevent flexible connection structure that infilled wall collapsed |
| CN114000653A (en) * | 2021-11-03 | 2022-02-01 | 哈尔滨工业大学 | High-ductility green energy-saving anti-drop double-layer heat-insulation building structure and construction method thereof |
| ES2957084A1 (en) * | 2022-05-30 | 2024-01-10 | Jurado Antonio Angel Ortega | Sub-structure for ventilated facades and photovoltaic panels (Machine-translation by Google Translate, not legally binding) |
-
2019
- 2019-08-09 CN CN201921289894.5U patent/CN210713360U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980211A (en) * | 2020-09-21 | 2020-11-24 | 华侨大学 | Flexible connection spare and prevent flexible connection structure that infilled wall collapsed |
| CN114000653A (en) * | 2021-11-03 | 2022-02-01 | 哈尔滨工业大学 | High-ductility green energy-saving anti-drop double-layer heat-insulation building structure and construction method thereof |
| ES2957084A1 (en) * | 2022-05-30 | 2024-01-10 | Jurado Antonio Angel Ortega | Sub-structure for ventilated facades and photovoltaic panels (Machine-translation by Google Translate, not legally binding) |
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