A full-precast assembly type concrete frame structure and a construction method thereof

Abstract

The application discloses a prefabricated assembly type concrete frame structure and a construction method thereof in the technical field of prefabricated building structures, which comprises a connecting stand column, an upper stand column, a cross beam, a column end splicing piece, a supporting rod and a jacking bolt; the connecting stand column and the protrusion form a T-shaped structure; the upper stand column and the cross beam are straight rods; the column end splicing piece and the beam end splicing piece are locked into an integral force structure by a locking plate, and the supporting cylinder and the supporting nut are locked by the supporting rod, so that prefabricated parts can be used, and a docking position anchoring device is added, which facilitates the alignment of the splicing position, improves the splicing precision and speed, improves the construction efficiency, and because the structure is simple, the reinforcing steel bars are accurately pre-buried in the prefabrication process, and site construction is not needed, the reinforcing steel bar burying precision is greatly improved, and the construction quality and construction convenience are provided; the site pouring work is reduced, the prefabrication rate and the construction efficiency are improved, and thus the engineering cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated building structures, and in particular to a fully prefabricated assembled concrete frame structure and a construction method thereof. Background Art

[0002] Currently, prefabricated concrete frame structures typically utilize cast-in-place concrete for beam-column joints, and the longitudinal reinforcement of the frame columns is typically connected using sleeve grouting. However, both require on-site concrete pouring. Because the beams and columns must be cast in-place, the aforementioned implementation is slow to construct and requires formwork for shaping, resulting in high costs and a long construction period. Grouting for connecting the longitudinal reinforcement of the columns is also difficult, and during on-site pouring, it's difficult to ensure the reinforcement remains stable during the pouring process, making construction quality difficult to guarantee and challenging to inspect.

[0003] Therefore, in recent years, various construction projects have vigorously promoted the application of prefabricated and assembled structures. Prefabricated buildings have developed rapidly and have been widely used in various types of buildings.

[0004] However, the disadvantages of prefabricated structures are also obvious. In the current prefabricated structures, when splicing the upper and lower columns, it is difficult to tie the steel bars and they cannot be embedded in advance. The joint strength after docking is low. The upper and lower columns are prefabricated and it is difficult to maintain a vertical state when splicing. The joints are prone to tilting under the action of terrain and gravity, causing the columns to tilt slightly. Especially during the solidification process of the joints, the upper spliced ​​columns need to be continuously hoisted to prevent them from tilting due to force. Moreover, if there is a slight tilt, the entire building structure will deflect slightly. The higher the building, the higher the verticality requirements. The current prefabricated columns and beams are difficult to ensure splicing accuracy, and it is also difficult to solve the strength problem at the splicing.

[0005] Based on this, the present invention designs a fully prefabricated assembled concrete frame structure and a construction method thereof to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a fully prefabricated assembled concrete frame structure and a construction method thereof, which can use prefabricated parts and add a docking position anchoring device to facilitate faster alignment of the assembly points, improve assembly accuracy and speed, and improve construction efficiency. Moreover, due to the simple structure, the steel bars are accurately embedded in the prefabrication process and do not require on-site construction, which greatly improves the accuracy of steel bar embedding, improves construction quality and construction convenience; reduces on-site pouring work, can improve the prefabrication rate and construction efficiency, and thus reduce project costs.

[0007] The present invention is implemented as follows: a fully prefabricated assembled concrete frame structure, comprising:

[0008] Connecting columns, upper columns, beams, column end fittings, support rods and jacking bolts;

[0009] The connecting columns, upper columns and cross beams are all prefabricated concrete components;

[0010] The upper columns and crossbeams are straight bars;

[0011] The connecting column is a columnar structure, and the side wall of the connecting column has a protrusion that protrudes horizontally outward, and the connecting column and the protrusion form a T-shaped structure;

[0012] A column end splicing piece is fixed on the vertical side wall of the outer end of the protrusion, and a beam end splicing piece is fixed on each end of the crossbeam. The beam end splicing piece has the same structure as the column end splicing piece;

[0013] The column end splicing piece and the beam end splicing piece are both step-shaped structures, and a receiving platform is horizontally provided in the middle of the column end splicing piece. The column end splicing piece is spaced apart by the receiving platform to form a step-shaped structure, and the beam end splicing piece is also horizontally provided with a receiving platform in the middle of the beam end splicing piece. The receiving platform of the column end splicing piece is a flat upward supporting surface, and the receiving platform of the beam end splicing piece is a flat downward supporting surface; the receiving platforms of the column end splicing piece and the beam end splicing piece are horizontally fitted and spliced ​​with each other, and the column end splicing piece and the beam end splicing piece are locked into an integral force-bearing structure by a locking plate;

[0014] A plurality of support tubes are fixedly provided on the top end surface of the connecting column, each of the support tubes is locked with the pre-buried steel bars inside the connecting column, a plurality of support nuts are fixedly provided on the bottom end surface of the upper column, each of the support nuts is also locked with the pre-buried steel bars inside the upper column, the plurality of support tubes on the top of the connecting column are evenly spaced and distributed in a rectangular shape, the plurality of support nuts at the bottom of the upper column are also evenly spaced and distributed in a rectangular shape, the positions and quantities of the plurality of support tubes and the plurality of support nuts correspond one to one, and each of the support tubes is directly below a support nut;

[0015] The support rod is a straight rod, the upper end of the support rod is an adjusting bolt, the support rod and the adjusting bolt are an integral structure, and the support tube and the support nut are locked by the support rod;

[0016] There are multiple jacking bolts, and multiple jacking bolts are set on the top of the connecting column. The jacking bolts can be vertically lifted and lowered by threads and are installed on the top end surface of the connecting column. The multiple jacking bolts are distributed around the top edge of the connecting column.

[0017] Furthermore, the connecting column and the protrusion are an integral structure cast by concrete, a plurality of the support tubes are pre-embedded and anchored on the top end face of the connecting column, and a plurality of the support nuts are also pre-embedded and cast on the bottom end face of the upper column.

[0018] Furthermore, a jacking bolt is provided between every two adjacent support tubes, and the support tubes and the jacking bolts are evenly spaced in sequence to form a rectangle, and the rectangle formed by the support tubes and the jacking bolts is distributed around the top edge of the connecting column;

[0019] The support tube is a cylinder with an open top, the lower end of the support rod is a round rod, a hexagonal nail head is between the support rod and the adjusting bolt, the bottom of the adjusting bolt nail head is supported on the top end surface of the support tube, and the support rod is vertically inserted into the support tube;

[0020] The adjusting bolt and the supporting nut are locked through threaded connection.

[0021] Furthermore, the locking plate is a flat steel plate; the splicing ends of the column end splicing piece and the beam end splicing piece are both horizontally provided with a plurality of locking holes.

[0022] The left and right sides of the locking plate are respectively locked with the locking holes of the column end splicing piece and the beam end splicing piece by bolts;

[0023] Two locking plates are respectively provided on the front and rear sides of the vertical reinforcements of the column end splicing piece and the beam end splicing piece, and one locking plate is respectively locked on the front and rear sides of the top and bottom of the receiving platform.

[0024] A construction method for a fully prefabricated assembled concrete frame, characterized in that the construction method requires providing a fully prefabricated assembled concrete frame structure, comprising the following steps:

[0025] Step S1, vertically fixing the connecting column on a reference surface;

[0026] Step S2, assembling a crossbeam between the two connecting columns, aligning the crossbeam with the protrusions of the connecting columns, aligning the column end splicing piece with the beam end splicing piece, and horizontally placing the receiving platform of the beam end splicing piece on the top of the receiving platform of the column end splicing piece;

[0027] Step S3: Take four locking plates, clamp them on the front and rear sides of the column end splicing piece and the beam end splicing piece, and fasten the locking plates by passing bolts through the locking holes. Pour covering concrete on the outside of the column end splicing piece and the beam end splicing piece, and smooth the joints between the protrusions and the beams.

[0028] Step S4: Pre-install the support rods on the support nuts at the bottom of the upper column using adjustment bolts, with each support nut corresponding to a support rod. Then, vertically lift the upper column and dock it on the top of the connecting column, aligning each support rod and inserting it into a support tube.

[0029] Step S5, adjusting the height of the jacking bolts so that the jacking bolts support the bottom of the upper column, and adjusting the upper column to a vertical state at the top of the connecting column by the jacking bolts;

[0030] Step S6: Keep the upper column in a vertical state, then turn the knob to adjust the bolt so that the support rod extends downward and the lower end of the support rod effectively supports the bottom of the support tube;

[0031] Step S7: pour concrete into the gap between the connecting column and the upper column to ensure that it is filled, smooth the concrete outside the joint between the connecting column and the upper column, and wait for it to solidify to form a complete building support component.

[0032] The beneficial effects of the present invention are as follows: 1. The present invention can directly support the beam through the protrusion, and can effectively support the beam through the receiving platform of the column end splicing piece and the beam end splicing piece, and no longer needs to be hoisted and supported, so that the beam can be built without formwork, and only the joints need to be constructed on site. The entire beam is already a complete structure when it is built, which is more convenient to construct. In addition, the addition of locking plates and stepped column end splicing pieces and beam end splicing pieces makes it easier to align the splicing of the beam and the protrusion, the locking is also more secure, the structural strength is higher, and the required bearing capacity can be achieved without waiting for the concrete age, and the construction speed is fast.

[0033] 2. The connecting columns and upper columns of this device are pre-aligned and assembled through support rods, and the support surface is pre-adjusted through jacking bolts to ensure that the upper column is vertical. Then, multiple support rods are used to adjust and strengthen the support, so that the supporting strength between the upper connecting column and the upper column is sufficient, and the verticality of the upper column can be adjusted through the support rods and jacking bolts, making the construction simpler and faster. Moreover, as long as the support rods and jacking bolts are stable, the joint seam can be effectively prevented from deflecting during the solidification process, so that the column can be built without formwork, greatly shortening the construction period.

[0034] 3. Through the support of support rods and jacking bolts, and the connection with internal steel bars through support tubes and support nuts, the structure of the entire building column component is more complete and the structural strength is higher. Taking into account the effects of boundary changes and construction loads, the on-site construction of precast concrete components can be achieved without support or formwork, greatly reducing the workload of on-site steel bar binding and reducing on-site wet operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Figure 1 This is a schematic diagram of the assembled state of the complete structure of the present invention;

[0037] Figure 2This is a schematic diagram of the structure of the components of the present invention in a disassembled state;

[0038] Figure 3 This is a schematic diagram of the structure of the split butt joint position of the column end splicing piece and the beam end splicing piece of the present invention;

[0039] Figure 4 This is a front structural diagram of the locking plate of the present invention;

[0040] Figure 5 This is a schematic diagram of the assembly relationship of the support rod, adjustment bolt, support cylinder and support nut of the present invention;

[0041] Figure 6 This is a schematic top view of the top structure of the connecting column of the present invention;

[0042] Figure 7 This is a bottom view schematic diagram of the upper column bottom structure of the present invention;

[0043] Figure 8 This is a structural diagram of the connecting column and the upper column forming a complete column according to the present invention.

[0044] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0045] 1-connecting column, 11-upper column, 12-crossbeam, 13-bump, 2-column end splicing piece, 21-beam end splicing piece, 22-supporting platform, 23-locking plate, 24-locking hole, 3-support rod, 31-adjusting bolt, 32-support tube, 33-support nut, 4-jacking bolt. DETAILED DESCRIPTION

[0046] See also Figures 1 to 8 As shown, the present invention provides a technical solution: a fully prefabricated assembled concrete frame structure and a construction method thereof, comprising:

[0047] Connect the column 1, the upper column 11, the crossbeam 12, the column end joint 2, the support rod 3 and the jacking bolt 4;

[0048] The connecting column 1, the upper column 11 and the cross beam 12 are all prefabricated concrete components;

[0049] The upper column 11 and the crossbeam 12 are straight rods;

[0050] The connecting column 1 is a columnar structure with a horizontally protruding bump 13 on its sidewall, forming a T-shaped structure. The connecting column 1 and the bump 13 are cast as a single unit with concrete. Multiple support tubes 32 are pre-embedded and anchored in the top end face of the connecting column 1, and multiple support nuts 33 are also pre-embedded and cast in the bottom end face of the upper column 11. Multiple support tubes 32 are fixed to the top end face of the connecting column 1, each of which is locked to the pre-embedded steel bars within the connecting column 1. Multiple support nuts 33 are fixed to the bottom end face of the upper column 11, each of which is also locked to the pre-embedded steel bars within the upper column 11.

[0051] A column end splicing piece 2 is fixed on the vertical side wall of the outer end of the protrusion 13, and a beam end splicing piece 21 is fixed on each end of the crossbeam 12. The beam end splicing piece 21 has the same structure as the column end splicing piece 2;

[0052] The column end splicing piece 2 and the beam end splicing piece 21 are both step-shaped structures. A receiving platform 22 is horizontally set in the middle of the column end splicing piece 2. The column end splicing piece 2 is spaced apart by the receiving platform 22 to form a step-shaped structure. The receiving platform 22 of the column end splicing piece 2 is a flat support surface facing upward, and the receiving platform 22 of the beam end splicing piece 21 is a flat support surface facing downward; the receiving platforms 22 of the column end splicing piece 2 and the beam end splicing piece 21 are horizontally fitted and spliced ​​with each other, and the column end splicing piece 2 and the beam end splicing piece 21 are locked into an integral force-bearing structure by a locking plate 23; the locking plate 23 is a flat steel plate; the splicing ends of the column end splicing piece 2 and the beam end splicing piece 21 are horizontally provided with a plurality of locking holes 24,

[0053] The left and right sides of the locking plate 23 are respectively locked with the locking holes 24 of the column end splicing piece 2 and the beam end splicing piece 21 by bolts;

[0054] Two locking plates 23 are respectively provided on the front and rear sides of the vertical ribs of the column end splicing piece 2 and the beam end splicing piece 21 , and one locking plate 23 is respectively locked on the front and rear sides of the top and bottom of the receiving platform 22 .

[0055] The beam end splicing piece 21 has exactly the same structure as the column end splicing piece 2, except that they are in opposite directions. Moreover, the beam end splicing piece 21 is pre-embedded and cast as an integral structure with the cross beam 12, and a beam end splicing piece 21 needs to be pre-embedded at both ends of each cross beam 12, and the column end splicing piece 2 needs to be pre-embedded and cast as an integral structure with the protrusion 13 connecting the column 1. However, the cross beam 12 itself is a horizontal straight rod. When splicing, the directions of the beam end splicing piece 21 and the column end splicing piece 22 need to be swapped so that the flat load-bearing surface 22 of the beam end splicing piece 21 faces downward, and the flat splicing surface of the column end splicing piece 2 faces upward, so that the two spliced ​​pieces 22 can be aligned and spliced ​​with each other for effective load-bearing.

[0056] The multiple support cylinders 32 at the top of the connecting column 1 are evenly spaced and distributed in a rectangular shape. The multiple support nuts 33 at the bottom of the upper column 11 are also evenly spaced and distributed in a rectangular shape. The positions and numbers of the multiple support cylinders 32 and the multiple support nuts 33 correspond one to one. Each support cylinder 32 is directly below a support nut 33.

[0057] The support rod 3 is a straight rod, and the upper end of the support rod 3 is an adjusting bolt 31. The support rod 3 and the adjusting bolt 31 are an integral structure, and the support tube 32 and the support nut 33 are locked by the support rod 3;

[0058] There are multiple jacking bolts 4, and multiple jacking bolts 4 are set on the top of the connecting column 1. The jacking bolts 4 can be vertically lifted and lowered by threads and are installed on the top end surface of the connecting column 1. Multiple jacking bolts 4 are distributed around the top edge of the connecting column 1.

[0059] A jacking bolt 4 is provided between every two adjacent support tubes 32, and the support tubes 32 and the jacking bolts 4 are evenly spaced in sequence to form a rectangle, and the rectangle formed by the support tubes 32 and the jacking bolts 4 is distributed around the top edge of the connecting column 1;

[0060] The support tube 32 is a cylinder with an open top. The lower end of the support rod 3 is a round rod. A hexagonal nail head is located between the support rod 3 and the adjusting bolt 31. The bottom of the nail head of the adjusting bolt 31 is supported on the top end surface of the support tube 32. The support rod 3 is vertically inserted into the interior of the support tube 32.

[0061] The adjusting bolt 31 and the support nut 33 are locked together through a threaded connection. This allows the upper end of the support rod 3 to be threadedly locked to the support nut 33 at a fixed height, while the lower end of the adjusting bolt 31 engages and engages the lower end of the support tube 32, lifting the support rod 3 and ensuring that the connecting column 1 securely locks the upper column 11. During splicing, the joint surface between the connecting column 1 and the upper column 11 remains horizontal. The support rod 3, the adjusting bolt 31, the support tube 32, and the support nut 33 form a mechanical joint structure that allows for both connection and height adjustment. The support height can also be adjusted via the lifting bolt 4.

[0062] The upper column 11 is assembled on the top of the connecting column 1, and the vertical outer end of the protrusion 13 is also horizontally spliced ​​with the crossbeam 12; the connecting column 1, the upper column 11, the crossbeam 12 and the protrusion 13 are all prefabricated concrete components;

[0063] The connecting column 1, the upper column 11 and the crossbeam 12 are all prefabricated concrete components, and the structures of the connecting column 1 and the upper column 11 are actually the same. They are all part of the prefabricated columns of the building structure. The connecting column 1 is the top part of the prefabricated column, and the upper column 11 is the bottom part of the prefabricated column. It is necessary to use two prefabricated columns, and assemble the upper column 11 at the bottom vertically to connect it to the top of the connecting column 1 to form a Figure 1As shown in the structure, conventional prefabricated building components need to be reinforced by embedding steel bars inside, and some directly use more solid steel cages to strengthen concrete building components.

[0064] The connecting columns 1, upper columns 11 and cross beams 12 of this device are also embedded with steel bars. The buried direction of the steel bars is the same as that of the conventional columns and beams. The steel bars need to be buried along the vertical direction of the columns, and the entire steel bars need to be completely buried therein. In this device, the ends of the steel bars connecting the columns 1 and the upper columns 11 need to be installed with support tubes 32 and support nuts 33, and the top of the connecting column 1 also needs to be buried with jacking bolts 4. The jacking bolts 4 and the support tubes 32 need to be arranged at intervals and are surrounded by the same rectangular frame as a whole. The distribution of the jacking bolts 4 and the support tubes 32 is as follows Figure 6 As shown, the support nuts 33 on the upper column 11 need to be distributed in a rectangular frame, and each support nut 33 needs to be set directly above a support tube 32. The position needs to be accurate during prefabrication, and the jacking bolt 4 needs to avoid the position of the support tube 32 to ensure that the jacking bolt 4 does not interfere with other structures.

[0065] The structure of the embodiment of the present invention is different from the existing technology in that:

[0066] 1. Existing concrete columns and beams need to be tied and fixed with templates on the construction site, the shapes of the columns and beams are molded, and then concrete is poured. The pouring process is slow, and the position of the steel bars embedded in the concrete components is difficult to ensure, which easily leads to uneven force. This device uses prefabricated columns and beams 12, which has a fast construction speed. In addition, the internal steel bars are straightened in advance, which can ensure the position of the steel bars and ensure the stability of the structure and force. When the prefabricated structure is constructed on site, it is efficient and fast, effectively shortening the construction period. 2. There are also prefabricated concrete building components. , when assembling, the joint between the upper and lower columns and the crossbeam 12 is a weak point. The general splicing is surface splicing. There are also cases where the exposed steel bars of the prefabricated components are tied and then the joints are filled with concrete. This kind of concrete and steel bars are easily cold-jointed at the later forming place, and the structural strength is insufficient. The present device adds a support tube 32 and a support nut 33, and locks the support tube 32 and the support nut 33 through the support rod 3 and the adjusting bolt 31. At the same time, the steel bars in the connecting column 1 and the upper column 11 are locked, ensuring the structural strength and the integrity of the structure. The steel bars between the two are locked by the support rods 3 and the adjusting bolts 31 to form a whole force, so that the joint structure is stronger. 3. When the existing prefabricated columns are spliced, the joint gap will be pressed downward. Generally, only one crane is used for hoisting during splicing. It can only bear the weight during hoisting, but cannot ensure the stability of its docking deflection force, which causes the upper column to be easily deflected during splicing, resulting in a slight deflection of the column after solidification, and it cannot be adjusted during splicing, nor can it be limited and supported before the concrete inside the splicing gap solidifies. When the device is assembled, the lifting bolts 4 can be used to The entire upper column 11 is temporarily lifted so that when the upper and lower columns of the device are assembled, the support angle of the upper column 11 can be adjusted to ensure that the upper column 11 remains vertical during assembly. Then, the support tube 32 and the support nut 33 are matched through the support rod 3 and the adjusting bolt 31 to adjust the support rod 3. The upper column 11 is stably supported by multiple support rods 3, and the structure is more stable and the support effect is better, ensuring that the upper column 11 remains vertical during the solidification process of the splicing seam. This device can not only adjust the position of the upper column 11, but also effectively support the concrete solidification process in the gap.

[0067] 4. When assembling the existing prefabricated beams 12, they can only be tied with steel bars and then the gaps are cast with concrete. When splicing, the weight of the beams 12 presses downward, which will cause the spliced ​​steel bars to pull ropes due to the heavy pressure, causing the beams 12 to sink slightly, which will affect the strength and stability of the building structure. However, this device supports the beams 12 through the receiving platform 22 of the column end splicing piece 2, and supports the receiving platform 22 of the beam end splicing piece 21 and the column end splicing piece 2, ensuring that the beams 12 can remain stable even when directly built, ensuring high structural strength and high docking accuracy, and will not deflect due to heavy pressure.

[0068] In a specific embodiment of the present invention:

[0069] The technical solution in the embodiment of the present invention is to solve the above problems, and the overall idea is as follows:

[0070] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0071] During the construction process of the present invention, the splicing process is completed by the following steps:

[0072] The connecting column 1 is fixed vertically on a reference plane; the connecting column 1 can also be locked by a mechanical joint with the support nut 33 at the bottom of its lower end and the steel bar of the pile foundation to ensure that the connecting column 1 is installed stably. The upper column 11 is installed above the connecting column 1 of the device, and the top of the upper column is the connecting column 1. The top of the same prefabricated column is the connecting column 1, and the lower end is the upper column 11. Figure 8 shown.

[0073] When splicing the beams, assemble the beam 12 between the two connecting columns 1, align the beam 12 with the protrusions 13 of the connecting columns 1, align the column end splicing piece 2 with the beam end splicing piece 21, and horizontally mount the receiving platform 22 of the beam end splicing piece 21 on top of the receiving platform 22 of the column end splicing piece 2;

[0074] The connection between the column end splicing piece 2 and the beam end splicing piece 21 is strengthened, not only by pouring concrete, but also by locking and reinforcing it with steel locking plates 23. Four locking plates 23 are taken and clamped on the front and rear sides of the column end splicing piece 2 and the beam end splicing piece 21. A locking plate 23 is respectively provided on the upper and lower sides of the receiving platform 22, and the front and rear sides of the receiving platform 22 are also locked with the locking plates 23, so that the four locking plates 23 clamp and lock the vertical reinforcement of the column end splicing piece 2 and the beam end splicing piece 21, which not only strengthens the thickness of the reinforcement, but also locks the crossbeam 12 and the protrusion 13 into a whole force-bearing state, and can also support the weight of the crossbeam 12 through the receiving platform 22, so that the crossbeam 12 can be stably mounted, which is convenient for pouring concrete at the splicing seam.

[0075] Then, the locking plate 23 is locked by passing the bolts through the locking holes 24, and the covering concrete is poured outside the column end splicing piece 2 and the beam end splicing piece 21, and the splicing seam between the protrusion 13 and the beam 12 is smoothed;

[0076] When the upper column 11 is connected to the upper part of the connecting column 1, the support rod 3 is pre-installed on the support nut 33 at the bottom of the upper column 11 by adjusting the bolt 31. A support rod 3 is installed at the bottom of each support nut 33 in a one-to-one manner. Then the upper column 11 is vertically lifted and docked on the top of the connecting column 1, and each support rod 3 is aligned and inserted into a support tube 32. In this way, the upper column 11 is preliminarily installed on the top of the connecting column 1, and the position is relatively stable. At the same time, the steel bar is basically not exposed. In order to facilitate operation, the existing steel bar binding generally has a splicing seam height of 15-30 cm. After the splicing seam of the present device is aligned, there is only a nut thickness of about 1-3 cm, which can be inserted with a wrench. Such a splicing seam thickness is small and basically does not bear heavy loads, which reduces the volume and thickness of the splicing seam with lower strength, making the structural strength of the entire column higher after splicing.

[0077] This device can adjust the verticality of the upper column 11, keep the upper column 11 in a suspended state, and a part of the weight is pressed on the top of the connecting column 1, and the operation is performed by adjusting the height of the jacking bolt 4, and the jacking bolt 4 is used to support the bottom of the upper column 11. The knob jacking bolt 4 is used to lift the bottom of the upper column 11 that is slightly tilted to the lower side and support it. The upper column 11 is supported on the top of the connecting column 1 by the jacking bolt 4, and its inclination is fine-tuned. It is detected by the vertical measuring device until the upper column 11 is adjusted to a vertical state; at this time, the upper column 11 is effectively supported by multiple support rods 3 and multiple jacking bolts 4.

[0078] Under the condition that the upper column 11 is kept in a vertical state and part of the weight of the upper column 11 is borne on the jacking bolt 4, the knob is adjusted to adjust the bolt 31, so that the support rod 3 extends downward, and the lower end of the support rod 3 and the bottom of the support tube 32 are effectively supported. Each support rod 3 between the upper column 11 and the connecting column 1 needs to be lifted up to ensure the stability of the upper column support. Then, the formwork is used to limit the splicing gap. Because the height of the splicing seam is very small, it is possible to consider not supporting the formwork and directly pouring the outside to smooth it. The gap is small and the concrete will not overflow or scatter.

[0079] Then pour concrete into the gap between the connecting column 1 and the upper column 11 to ensure that it is filled and compacted, smooth the concrete outside the joint between the connecting column 1 and the upper column 11, and wait for it to solidify to form a complete building support component. The structure of this device has a small splicing gap, and the overall structure of the column after splicing is strong. The splicing seam is completely locked with the steel bar and has a supporting effect. The splicing effect is good, and the verticality of the upper column 11 above can be adjusted. It is more flexible to use and the splicing is more accurate. The splicing of the crossbeam 12 can be directly built and erected, and then the concrete is poured and smoothed during the splicing seam. There is no need for strong support and bearing all the time. The assembly accuracy is high, the use is convenient and flexible, the construction period is effectively shortened, and the building structure can be increased. The splicing seam is narrow, which hardly affects the integrity of the building and the structural strength is high.

[0080] The outer end of the protrusion 13 of this device refers to the end spliced ​​with the beam 12, the outer end of the beam 12 refers to the end spliced ​​with the protrusion 13, and the upper and lower ends connecting the column 1 and the upper column 11 are both referred to as splicing seam ends.

[0081] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A fully prefabricated assembled concrete frame structure, characterized in that: include: Connecting columns, upper columns, beams, column end fittings, support rods and jacking bolts; The connecting columns, upper columns and cross beams are all prefabricated concrete components; The upper columns and crossbeams are straight bars; The connecting column is a columnar structure, and the side wall of the connecting column has a protrusion that protrudes horizontally outward, and the connecting column and the protrusion form a T-shaped structure; A column end splicing piece is fixed on the vertical side wall of the outer end of the protrusion, and a beam end splicing piece is fixed on each end of the crossbeam. The beam end splicing piece has the same structure as the column end splicing piece; The column end splicing piece and the beam end splicing piece are both step-shaped structures, and a receiving platform is horizontally provided in the middle of the column end splicing piece. The column end splicing piece is spaced apart by the receiving platform to form a step-shaped structure, and the beam end splicing piece is also horizontally provided with a receiving platform in the middle of the beam end splicing piece. The receiving platform of the column end splicing piece is a flat upward supporting surface, and the receiving platform of the beam end splicing piece is a flat downward supporting surface; the receiving platforms of the column end splicing piece and the beam end splicing piece are horizontally fitted and spliced ​​with each other, and the column end splicing piece and the beam end splicing piece are locked into an integral force-bearing structure by a locking plate; A plurality of support tubes are fixedly provided on the top end surface of the connecting column, each of the support tubes is locked with the pre-buried steel bars inside the connecting column, a plurality of support nuts are fixedly provided on the bottom end surface of the upper column, each of the support nuts is also locked with the pre-buried steel bars inside the upper column, the plurality of support tubes on the top of the connecting column are evenly spaced and distributed in a rectangular shape, the plurality of support nuts at the bottom of the upper column are also evenly spaced and distributed in a rectangular shape, the positions and quantities of the plurality of support tubes and the plurality of support nuts correspond one to one, and each of the support tubes is directly below a support nut; The support rod is a straight rod, the upper end of the support rod is an adjusting bolt, the support rod and the adjusting bolt are an integral structure, and the support tube and the support nut are locked by the support rod; There are multiple jacking bolts, and multiple jacking bolts are set on the top of the connecting column. The jacking bolts are installed on the top end surface of the connecting column through threads and can be vertically lifted and lowered. The multiple jacking bolts are distributed around the edge of the top of the connecting column; The connecting column and the protrusion are cast in concrete to form an integral structure, a plurality of the support tubes are pre-embedded and anchored on the top end face of the connecting column, and a plurality of the support nuts are also pre-embedded and cast on the bottom end face of the upper column; A jacking bolt is provided between every two adjacent support tubes, and the support tubes and the jacking bolts are evenly spaced in sequence to form a rectangle, and the rectangle formed by the support tubes and the jacking bolts is distributed around the top edge of the connecting column; The support tube is a cylinder with an open top, the lower end of the support rod is a round rod, a hexagonal nail head is between the support rod and the adjusting bolt, the bottom of the adjusting bolt nail head is supported on the top end surface of the support tube, and the support rod is vertically inserted into the support tube; The adjusting bolt and the supporting nut are locked through threaded connection.

2. A fully prefabricated assembled concrete frame structure according to claim 1, characterized in that: The locking plate is a flat steel plate; the joint ends of the column end joint piece and the beam end joint piece are both horizontally provided with a plurality of locking holes. The left and right sides of the locking plate are respectively locked with the locking holes of the column end splicing piece and the beam end splicing piece by bolts; Two locking plates are respectively provided on the front and rear sides of the vertical reinforcements of the column end splicing piece and the beam end splicing piece, and one locking plate is respectively locked on the front and rear sides of the top and bottom of the receiving platform.

3. A construction method for a fully prefabricated assembled concrete frame, characterized in that: The construction method requires providing a fully prefabricated assembled concrete frame structure as described in any one of claims 1-2, comprising the following steps: Step S1, vertically fixing the connecting column on a reference surface; Step S2, assembling a crossbeam between the two connecting columns, aligning the crossbeam with the protrusions of the connecting columns, aligning the column end splicing piece with the beam end splicing piece, and horizontally placing the receiving platform of the beam end splicing piece on the top of the receiving platform of the column end splicing piece; Step S3: Take four locking plates, clamp them on the front and rear sides of the column end splicing piece and the beam end splicing piece, and fasten the locking plates by passing bolts through the locking holes. Pour covering concrete on the outside of the column end splicing piece and the beam end splicing piece, and smooth the joints between the protrusions and the beams. Step S4: Pre-install the support rods on the support nuts at the bottom of the upper column using adjustment bolts, with each support nut corresponding to a support rod. Then, vertically lift the upper column and dock it on the top of the connecting column, aligning each support rod and inserting it into a support tube. Step S5, adjusting the height of the jacking bolts so that the jacking bolts support the bottom of the upper column, and adjusting the upper column to a vertical state at the top of the connecting column by the jacking bolts; Step S6: Keep the upper column in a vertical state, then turn the knob to adjust the bolt so that the support rod extends downward and the lower end of the support rod effectively supports the bottom of the support tube; Step S7: pour concrete into the gap between the connecting column and the upper column to ensure that it is filled, smooth the concrete outside the joint between the connecting column and the upper column, and wait for it to solidify to form a complete building support component.

Images