Column and foundation connecting joint structure and construction method thereof

Abstract

The invention discloses a column and foundation connection node structure and a construction method thereof, and relates to the technical field of fabricated buildings, the column and foundation connection node structure comprises a base, and the top end of the base is provided with an anti-shear insertion hole; a shear-resistant seat body; the anti-shearing seat body is inserted into the anti-shearing insertion hole, so that a mortar pouring cavity I for pouring mortar is defined between the outer peripheral wall of the anti-shearing seat body and the inner peripheral wall of the anti-shearing insertion hole; an anchoring insertion hole is formed in the top end of the shear-resistant seat body; anchoring rod assemblies are fixed to the bottom ends of the stand columns, and the anchoring rod assemblies are implanted into the anchoring insertion holes so that the stand columns can be fixedly connected with the shear-resistant base body. The shear resistance, compression resistance and bending resistance of the connecting joint can be improved, the connecting stability of the joint and the safety of the overall structure are improved, the components can be prefabricated and rapidly assembled on site, site operation is reduced, and the construction period is greatly shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a column and foundation connection node structure and a construction method thereof. Background Art

[0002] With the widespread application of prefabricated buildings, traditional connection methods between columns and foundation nodes, such as bolt connection or welding, have problems such as complex construction, low efficiency, and limited force performance. These traditional methods often require a lot of on-site work, affecting the construction progress and may lead to unstable node performance, especially in high-rise buildings or large-span structures, where the force requirements of the nodes are more stringent. Therefore, there is an urgent need for an innovative connection structure that can not only improve the structural performance of the node, but also reduce on-site operations and improve construction efficiency through prefabrication and standardized design.

[0003] Therefore, how to provide a column and foundation connection node structure and its construction method, which can improve the shear, compression and bending resistance of the connection node, improve the connection stability of the node and the safety of the overall structure, and the components can be prefabricated and quickly assembled on site, reducing on-site operations and significantly shortening the construction period is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] In view of this, the present invention proposes a column and foundation connection node structure and a construction method thereof, aiming to solve the technical problems of poor stability and low assembly efficiency of the above-mentioned traditional column and foundation node connection structure.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] In one aspect, the present invention provides a column and foundation connection node structure, comprising:

[0007] A base, wherein a shear-resistant insertion hole is provided at the top of the base;

[0008] A shear seat body; the shear seat body is inserted into the shear insertion hole, and a mortar pouring cavity for pouring mortar to fix the shear seat body in the shear insertion hole is defined between the outer peripheral wall of the shear seat body and the inner peripheral wall of the shear insertion hole; an anchoring plug hole is provided at the top of the shear seat body;

[0009] A column, wherein an anchor rod assembly is fixed to the bottom end of the column, and the anchor rod assembly is implanted in the anchor insertion hole to fix the column to the shear-resistant seat body.

[0010] The column and foundation connection node structure of the present invention changes the traditional connection method of bolts or welding between the column and the foundation node. By setting a shear insertion hole on the base, the column and the base are connected through a shear seat body embedded in the shear insertion hole. Compared with the traditional connection method, the shear resistance, bending resistance and compression resistance and connection stability at the connection node can be improved; and by setting a gap between the shear seat body and the shear insertion hole, direct contact between the two is avoided, and by pouring concrete mortar in the mortar pouring cavity, a buffering and seismic isolation layer can be formed between the shear seat body and the shear insertion hole after curing, which can improve the seismic resistance and safety of the connection node structure. The column is anchored on the shear seat body through an anchor rod assembly, which further improves the stability of the connection. The base, shear seat and column of the present invention can be prefabricated in a factory in a process-based manner, and can be quickly assembled on the construction site after prefabrication. Among them, when the column is prefabricated, the anchor rod assembly can be pre-buried in the column, and the shear seat and the column can be transported to the site separately for assembly, or they can be pre-assembled and then transported to the construction site, which can improve the assembly efficiency of the node structure connecting the column and the foundation and reduce the construction cost.

[0011] As a further improvement of the above technical solution, the inner wall of the shear-resistant insertion hole is provided with a shear-resistant slot; the shear-resistant slot corresponds to the side wall of the top end of the base and extends to the top end of the base to form an insertion port;

[0012] The shear-resistant seat body includes a main seat body and a shear-resistant plug plate; the anchoring hole is arranged on the top of the main seat body; the shear-resistant plug plate is fixed to the outer peripheral wall of the main seat body; the main seat body can be inserted into the shear-resistant plug hole, and drive the shear-resistant plug plate to be inserted from the insertion port into the shear-resistant slot, so as to define the mortar pouring cavity between the outer peripheral wall of the main seat body and the shear-resistant plug plate and the inner peripheral wall of the shear-resistant plug hole and the shear-resistant slot.

[0013] The beneficial effect of the above technical solution is that the shear-resistant plug plate is embedded in the shear-resistant plug hole, and the cooperation of the two can further improve the shear resistance of the connection node.

[0014] As a further improvement of the above technical solution, mortar is poured in the mortar pouring cavity 1 to form a seismic isolation layer that can absorb and buffer external impact force after the mortar is cured.

[0015] The beneficial effect of the above technical solution is that after the mortar is poured in the mortar pouring cavity 1, the seismic isolation layer formed between the shear seat and the shear insertion hole, and between the shear plug plate 1 and the shear insertion hole can effectively absorb and buffer energy when the structure is subjected to impact force (such as earthquake, strong wind or heavy load), reduce stress concentration, and protect the column and foundation connection node structure from damage.

[0016] As a further improvement of the above technical solution, the anchor rod assembly includes a connecting rod and an anchor sleeve; the connecting rod is vertically fixed at the bottom end of the column; the anchor sleeve is sleeved on the connecting rod; the anchor sleeve can be implanted in the anchor socket to fixedly connect the column with the shear-resistant seat.

[0017] The beneficial effects of the above technical solution are: the connecting rod is used to connect the column; the anchor sleeve can increase the connection strength with the shear seat body, and finally achieve a stable connection between the column and the shear seat body.

[0018] As a further improvement of the above technical solution, one end of the connecting rod is inserted into the column, the other end of the connecting rod has an external thread, and the inner hole of the anchor sleeve is provided with an internal thread; the anchor sleeve is threadedly connected to the other end of the connecting rod and fastened to the bottom end of the column.

[0019] The beneficial effect of the above technical solution is that the anchor sleeve is threadedly connected to the connecting rod and is fastened to the bottom end of the column, so that a stable connection is achieved between the anchor sleeve and the column.

[0020] As a further improvement of the above technical solution, a key groove is provided on the outer peripheral side of the top end of the base corresponding to the shear-resistant insertion hole;

[0021] A rib plate assembly is fixed on the outer peripheral side of the bottom of the column, and a second shear plate is provided at the bottom end of the rib plate assembly; the second shear plate can be adapted to be inserted into the key slot to connect the column with the base.

[0022] The beneficial effect of the above technical solution is that the connection stability between the column and the base is further improved by the shear-resistant plug plate 2 and the key slot, and the shear resistance of the connection node between the column and the foundation is improved.

[0023] As a further improvement of the above technical solution, the rib plate assembly includes a rib plate, which is fixed to the outer peripheral side of the bottom of the column; the second shear plate is fixed to the bottom end of the rib plate; when the second shear plate is adapted to be inserted in the keyway, the bottom end of the rib plate abuts against the top end of the base.

[0024] The beneficial effect of the above technical solution is that after the column is assembled with the base, the rib plate abuts against the top of the base, further improving the compression and bending resistance of the connection node.

[0025] As a further improvement of the above technical solution, an anchor body is fixed to the bottom end of the shear-resistant seat body; the bottom of the shear-resistant insertion hole has a second mortar casting cavity for accommodating the anchor body; the anchor body can be anchored in the concrete layer cast in the second mortar casting cavity.

[0026] The beneficial effect of the above technical solution is that the anchor body plays a role in enhancing the connection strength between the shear-resistant seat body and the base, thereby improving the stability of the connection between the shear-resistant seat body and the base.

[0027] A second aspect of the present invention provides a construction method for a column-foundation connection node, including the column-foundation connection node structure, comprising the following steps:

[0028] Step 1: Arrange the base horizontally;

[0029] Step 2: Insert the shear seat body into the shear insertion hole of the base from top to bottom, and make the gap between the outer peripheral wall of the shear seat body and the inner peripheral wall of the shear insertion hole uniform to form an annular mortar pouring cavity 1;

[0030] Step 3: pouring mortar into the mortar pouring cavity 1, after the mortar is cured, the shear seat body is fixedly connected to the shear insertion hole of the base, and an annular seismic isolation layer that can absorb and buffer external impact force is formed around the shear seat body;

[0031] Step 4: Install the column so that the anchor rod assembly at the bottom of the column is correspondingly implanted into the anchor socket to fix the column on the shear seat.

[0032] A third aspect of the present invention provides a construction method for a column-foundation connection node, including a column-foundation connection node structure, comprising the following steps:

[0033] Step 1: Arrange the base horizontally;

[0034] Step 2: Assemble the shear seat and the column; implant the anchor rod assembly at the bottom of the column into the anchor socket to fix the column and the shear seat to form a combination of the shear seat and the column;

[0035] Step 3: Insert the shear seat body of the assembly into the shear insertion hole of the base from top to bottom, and make the gap between the outer peripheral wall of the shear seat body and the inner peripheral wall of the shear insertion hole uniform to form an annular mortar pouring cavity 1;

[0036] Step 4: pour mortar into the mortar pouring cavity 1. After the mortar is cured, the shear seat body is fixedly connected to the shear insertion hole of the base, and an annular seismic isolation layer that can absorb and buffer external impact force is formed around the shear seat body.

[0037] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a column and foundation connection node structure and a construction method thereof, which have the following advantages and beneficial effects:

[0038] 1. The present invention adds a rib plate assembly at the connection between the column base node and the column; wherein the rib plate is pressed against the top of the base, and the second shear plate is inserted into the keyway of the base, and is tightly combined with the foundation node through a nested design to form a solid structural support.

[0039] 2. The present invention uses a shear-resistant seat at the connection between the column base node and the column. The shear-resistant seat can be made of high-strength alloy steel. The shear-resistant seat is provided with a shear-resistant plug plate. The shear-resistant plug plate serves as an anti-shear key and is tightly fitted with the shear-resistant insertion hole reserved when the base is made, so as to provide additional shear resistance.

[0040] 3. The present invention can improve the overall anchoring performance of the column by arranging an anchor body at the bottom end of the shear-resistant seat.

[0041] 4. The present invention can effectively absorb and buffer energy when the structure is subjected to impact force (such as earthquake, strong wind or heavy load) by pouring a layer of mortar around the shear-resistant seat, reduce stress concentration, and protect the foundation nodes from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0043] Figure 1 An exploded diagram of a connection node structure between a column and a foundation according to the present invention;

[0044] Figure 2 A schematic diagram of the assembly state of a column and foundation connection node structure of the present invention;

[0045] Figure 3 A schematic top view of a connection node structure between a column and a foundation according to the present invention;

[0046] Figure 4 A schematic front view of a connection node structure between a column and a foundation according to the present invention;

[0047] Figure 5 A three-dimensional schematic diagram of a shear-resistant seat body of a column and foundation connection node structure of the present invention;

[0048] Figure 6 A schematic top view of a shear-resistant seat body of a column and foundation connection node structure of the present invention;

[0049] Figure 7 A schematic front view of a shear-resistant seat body of a column and foundation connection node structure of the present invention;

[0050] Figure 8 A bottom view schematic diagram of a shear-resistant seat body of a column and foundation connection node structure of the present invention;

[0051] Fig. 9A schematic front view of a column of a connection node structure between a column and a foundation according to the present invention;

[0052] Fig.10 A schematic top view of a column of a column-foundation connection node structure of the present invention;

[0053] Fig.11 A bottom view schematic diagram of a column of a column-foundation connection node structure of the present invention;

[0054] Fig.12 A three-dimensional schematic diagram of an anchor sleeve of a column and foundation connection node structure of the present invention;

[0055] Fig.13 A schematic front view of an anchor sleeve of a column and foundation connection node structure of the present invention;

[0056] Fig.14 A schematic top view of an anchor sleeve of a column-foundation connection node structure according to the present invention;

[0057] Fig.15 An equivalent stress diagram of a rib plate assembly of a column and foundation connection node structure of the present invention;

[0058] Fig.16 An equivalent stress diagram of an anchor body of a column and foundation connection node structure of the present invention;

[0059] Fig.17 A half-section view of equivalent stress of an anchor body of a column-foundation connection node structure of the present invention;

[0060] Fig.18 An equivalent stress cross-sectional view of an anchor body of a column and foundation connection node structure of the present invention;

[0061] In the figure: 1. base; 11. shear insertion hole; 111. shear slot; 1111. insertion port; 12. mortar pouring cavity one; 13. keyway; 14. mortar pouring cavity two; 2. shear seat body; 21. main seat body; 211. anchoring hole; 22. shear plug plate one; 23. anchor body; 3. column; 31. anchor rod assembly; 311. connecting rod; 312. anchor sleeve; 32. rib plate assembly; 321. shear plug plate two; 322. rib plate. DETAILED DESCRIPTION

[0062] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0063] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] like Figures 1 to 14 As shown, a column and foundation connection node structure includes:

[0067] A base 1, a shear-resistant insertion hole 11 is provided at the top of the base 1;

[0068] The shear seat body 2 is adapted to be inserted into the shear insertion hole 11, and a mortar pouring cavity 12 for pouring mortar to fix the shear seat body 2 in the shear insertion hole 11 is defined between the outer peripheral wall of the shear seat body 2 and the inner peripheral wall of the shear insertion hole 11; an anchoring plug hole 211 is provided at the top of the shear seat body 2;

[0069] The column 3 has an anchor rod assembly 31 fixed at the bottom end thereof, and the anchor rod assembly 31 is implanted in the anchor insertion hole 211 to fix the column 3 to the shear-resistant seat body 2 .

[0070] The column and foundation connection node structure of this embodiment changes the traditional connection method of bolts or welding between the column and the foundation. By setting a shear insertion hole 11 on the base 1, the column 3 and the base 1 are connected through the shear seat body 2 embedded in the shear insertion hole 11. Compared with the traditional connection method, it can improve the shear resistance, bending resistance and compression resistance and connection stability at the connection node; and by setting a gap between the shear seat body 2 and the shear insertion hole 11, the direct contact between the two is avoided, and by pouring concrete mortar in the mortar pouring cavity 12, a buffering and seismic isolation layer can be formed between the shear seat body 2 and the shear insertion hole 11 after curing, which can improve the seismic resistance and safety of the connection node structure. The column 3 is anchored to the shear seat body 2 through the anchor rod assembly 31, which further improves the stability of the connection. The base 1, the shear seat 2 and the column 3 of the present invention can all be prefabricated in a factory in a process-based manner, and can be quickly assembled at the construction site after prefabrication. Among them, when the column 3 is prefabricated, the anchor rod assembly 31 can be pre-buried in the column 3, and the shear seat 2 and the column 3 can be transported to the site separately for assembly, or they can be pre-assembled and then transported to the construction site, which can improve the assembly efficiency of the node structure connecting the column and the foundation and reduce the construction cost.

[0071] In some embodiments, the inner wall of the shear-resistant insertion hole 11 is provided with a shear-resistant slot 111; the shear-resistant slot 111 corresponds to the side wall of the top of the base 1 and extends to the top of the base 1 to form an opening, constituting an insertion port 1111;

[0072] The shear seat body 2 includes a main seat body 21 and a shear plug plate 22; an anchoring hole 211 is provided at the top of the main seat body 21; the shear plug plate 22 is fixed to the outer peripheral wall of the main seat body 21; the main seat body 21 can be inserted into the shear insertion hole 11, and drive the shear plug plate 22 to be inserted from the insertion port 1111 into the shear slot 111, so as to define a mortar pouring cavity 12 between the outer peripheral wall of the main seat body 21 and the shear plug plate 22 and the inner peripheral wall of the shear insertion hole 11 and the shear slot 111.

[0073] The shear-resistant insert plate 22 is embedded in the shear-resistant insert hole 11, and the cooperation between the two can further improve the shear resistance of the connection node.

[0074] In some embodiments, mortar is poured into the mortar pouring cavity 12 to form a seismic isolation layer that can absorb and buffer external impact force after the mortar is cured.

[0075] After pouring mortar in the mortar pouring cavity 12, the seismic isolation layer formed between the shear seat 2 and the shear insertion hole 11, and between the shear plug plate 22 and the shear insertion hole 11 can effectively absorb and buffer energy when the structure is subjected to impact force (such as earthquake, strong wind or heavy load), reduce stress concentration, and protect the column and foundation connection node structure from damage.

[0076] In some embodiments, the anchor rod assembly 31 includes a connecting rod 311 and an anchor sleeve 312; the connecting rod 311 is vertically fixed to the bottom end of the column 3; the anchor sleeve 312 is sleeved on the connecting rod 311; the anchor sleeve 312 can be implanted in the anchor socket 211 to fix the column 3 to the shear-resistant seat 2.

[0077] The connecting rod 311 is used to connect the column 3; the anchor sleeve 312 can increase the connection strength with the shear-resistant seat body 2, and finally achieve a stable connection between the column 3 and the shear-resistant seat body 2.

[0078] In some embodiments, one end of the connecting rod 311 is inserted into the column 3, the other end of the connecting rod 311 has an external thread, and the inner hole of the anchor sleeve 312 is provided with an internal thread; the anchor sleeve 312 is threadedly connected to the other end of the connecting rod 311 and fastened to the bottom end of the column 3.

[0079] The anchor sleeve 312 is threadedly connected to the connecting rod 311 and fastened to the bottom end of the column 3 , so that a stable connection is achieved between the anchor sleeve 312 and the column 3 .

[0080] In some embodiments, a keyway 13 is provided on the outer peripheral side of the top end of the base 1 corresponding to the shear-resistant insertion hole 11;

[0081] A rib assembly 32 is fixed to the outer peripheral side of the bottom of the column 3 , and a second shear plug plate 321 is provided at the bottom end of the rib assembly 32 ; the second shear plug plate 321 can be adapted to be inserted into the key slot 13 to connect the column 3 to the base 1 .

[0082] By fitting the second anti-shear plug plate 321 into the key slot 13, the connection stability between the column 3 and the base 1 is further improved, and the anti-shear capacity of the connection node between the column and the foundation is improved.

[0083] In some embodiments, the rib assembly 32 includes a rib 322, which is fixed to the outer peripheral side of the bottom of the column 3; the second shear plate 321 is fixed to the bottom end of the rib 322; when the second shear plate 321 is adapted to be inserted into the key slot 13, the bottom end of the rib 322 abuts against the top of the base 1.

[0084] After the column 3 is assembled with the base 1 , the rib plate 322 abuts against the top of the base 1 , further improving the compression and bending resistance of the connection node.

[0085] In some embodiments, an anchor body 23 is fixed to the bottom end of the shear seat body 2; the bottom of the shear insertion hole 11 has a mortar casting cavity 14 for accommodating the anchor body 23; the anchor body 23 can be anchored in the concrete layer cast in the mortar casting cavity 14.

[0086] The anchor body 23 serves to enhance the connection strength between the anti-shear seat body 2 and the base 1 , thereby improving the stability of the connection between the anti-shear seat body 2 and the base 1 .

[0087] Specifically, the base 1 is a rectangular parallelepiped (it can also be designed into other shapes as needed) and is a reinforced concrete base; the base 1 can be prefabricated in a factory, and a rectangular shear insertion hole 11, a plurality of shear slots 111 and a plurality of key slots 13 are reserved in the middle of the top of the base 1 when the base 1 is prefabricated; the plurality of shear slots 111 are evenly distributed along the circumference of the shear insertion hole 11; the key slots 13 are symmetrically arranged on both sides of each shear slot 111. The shear seat body 2 is made of high-strength alloy steel; wherein the main seat body 21 is a rectangular block, a plurality of anchoring holes 211 are evenly distributed on the top, a plurality of anchor bodies 23 are vertically welded and fixed at the bottom, and a plurality of trapezoidal shear plug plates 22 are vertically welded and fixed on the outer peripheral wall, and the plurality of shear plug plates 22 are evenly distributed along the circumference of the main seat body 21, and the plurality of shear plug plates 22 can be inserted one by one corresponding to the plurality of shear slots 111. The column 3 is a rectangular reinforced concrete column. The column 3 can be prefabricated in the factory. When prefabricating the column 3, one end of the connecting rod 311 is anchored inside the column 3. The length of the buried section of the connecting rod 311 buried inside the column 3 is less than or equal to the length of the column 3; the other end of the connecting rod 311 is reserved outside the column 3 and perpendicular to the bottom end surface of the column 3, as a connecting section connected to the anchor sleeve 312, and the connecting section of the connecting rod 311 is processed with an external thread that matches the internal thread of the anchor sleeve 312; during assembly, the anchor sleeve 312 is screwed and sleeved on the connecting section of the connecting rod 311, and the anchor sleeve 312 is fixed to the bottom end surface of the column 3; a plurality of connecting rods 311 are arranged, and the connecting sections of the plurality of connecting rods 311 are arranged parallel to each other, and each Anchor sleeves 312 are installed on the connecting sections of the connecting rods 311. During assembly, multiple connecting rods 311 equipped with anchor sleeves 312 can be adapted and inserted into multiple anchor sockets 211 one by one to assemble the column 3 and the shear seat 2. The outer diameter of the anchor sleeve 312 is smaller than the inner diameter of the anchor socket 211. When the anchor sleeve 312 is inserted into the anchor socket 211, a grouting gap is provided between the outer peripheral wall of the anchor sleeve 312 and the inner peripheral wall of the anchor socket 211. The anchor sleeve 312 is anchored in the anchor socket 211 by grouting in the grouting gap. The grouting operation of the grouting gap can be carried out at the construction site, or the column 3 and the shear seat 2 can be pre-assembled in a prefabrication factory to improve the assembly efficiency at the construction site. A plurality of trapezoidal steel ribs 322 are fixed at intervals along the circumferential direction at the bottom of the column 3, and the bottom end of each rib 322 is welded and fixed or integrally connected to a steel shear plug 2 321; the shear plug 2 321 and the rib 322 are located in the same plane; it is ensured that during assembly, the positions of the plurality of shear plugs 2 321 correspond to the plurality of key slots 13 one by one, so that when the main seat body 21 is adapted to fall into the shear insertion hole 11, the shear plug 1 22 can be inserted into the corresponding shear slot 111, and the shear plug 2 321 can be inserted into the corresponding key slot 13. When the main seat body 21 is adapted to be embedded in the shear insertion hole 11, the top surface of the main seat body 21 corresponds to and is flush with the top surface of the shear insertion hole 11.

[0088] Specifically, there are four shear plates 22, which are fixed one by one vertically in the middle of the four peripheral sides of the main seat body 21, and the plate surfaces are arranged along the height direction of the shear seat body 2; the rib plate assemblies 32 are four groups, each group includes two shear plates 2 321 and two rib plates 322; after assembly, the two shear plates 2 321 and two rib plates 322 of each group are arranged in parallel to the plate surfaces on both sides of the corresponding shear plates 22.

[0089] Specifically, the main seat body 21 has a length of 400-600 mm, a width of 400-600 mm, and a height of 180-220 mm. The radius of the anchoring hole 211 is 10-20 mm. The length of the shearing plug plate 22 is 80-120 mm, and the height is 180-220 mm. The anchor body 23 has a length of 70-90 mm, a width of 70-90 mm, and a groove is provided in the middle of the outer peripheral wall of the anchor body 23 to improve the strength of the anchoring connection. The length of the column 3 is 400-600mm, and the width is 400-600mm; the length of the rib plate 322 is 140-160mm, and the thickness is 20-40mm; the length of the second shear plate 321 is 50-70mm, and the thickness of the second shear plate 321 is less than the thickness of the rib plate 322, and the top of the second shear plate 321 is fixed to the middle of the bottom end of the rib plate 322; the spacing between two adjacent rib plates 322 in each group is 140-160mm; the radius of the connecting rod 311 is 8-12mm; an annular gasket is fixed to the top of the anchor sleeve 312, the outer diameter of the annular gasket is 40-60mm, the thickness of the annular gasket is 4-6mm, and the height of the anchor sleeve 312 is 185-195mm. It should be noted that the specific dimensions of the above components can be designed according to actual needs.

[0090] In some embodiments, when the base 1 is prefabricated, graphene nanosheets are added to the concrete material thereof to significantly improve the compressive and tensile strengths of the column base nodes.

[0091] In some embodiments, a high entropy alloy coating is sprayed on the outer surface of the metal prefabricated components such as the shear seat 2, the shear plug 1 22, the shear plug 2 321, the rib 322 and the anchor sleeve 312 to improve the strength and ductility of the metal components. Among them, the material of the high entropy alloy coating is generally composed of a variety of metal elements, which form a complex alloy structure in a mixture of equal or nearly equal proportions. A typical high entropy alloy material will contain five or more metal elements, and the proportion of each element is close. These elements include aluminum, titanium, nickel, iron, copper, zinc, etc.

[0092] In some embodiments, a waterproof and breathable membrane is laid on the outer surface of metal prefabricated components such as the shear seat 2, shear plate 1 22, shear plate 2 321, rib 322 and anchor sleeve 312; for example, a waterproof and breathable membrane made of polytetrafluoroethylene (PTFE) material is selected and laid on the outer surface of the metal prefabricated components.

[0093] In some embodiments, a laser measuring instrument and a position sensor can be used to provide an automatic calibration function when the column 3 is connected to the node of the base 1; the laser measuring instrument is arranged on the base 1, and infrared receiving devices are set at the middle position of the four peripheral sides and the bottom of the prefabricated column 3. When the infrared receiving device receives the signal sent by the laser measuring instrument during alignment, the column 3 can be placed vertically downward, which can improve the assembly efficiency.

[0094] It should be noted that, based on the prefabricated and modularly produced column and foundation connection node structure provided by the present invention, in order to optimize the construction process and prefabricated parts manufacturing process, a modular prefabricated foundation node system can be designed. The modular prefabricated foundation node system has the functions of automatic assembly and precise positioning. The system pre-modularizes the various components of the foundation node (such as the shear seat 2, the shear plug plate 22 and the rib assembly 32, etc.) in the factory, and completes the preliminary assembly of the foundation node in the factory. Through standardized connectors and module interfaces, it is ensured that each module can be quickly installed and docked on site, reducing the assembly workload on the construction site. At the construction site, an intelligent positioning system (such as laser and sensor technology) is used to guide the precise placement of prefabricated parts. This system ensures accurate assembly and error-free docking between modules by real-time monitoring of the installation angle and position of the module, avoiding the errors caused by traditional manual measurement. Combined with automatic assembly machinery or robots, the modules can be assembled quickly and accurately, which can greatly improve the construction speed.

[0095] Another embodiment provides a construction method of a column-foundation connection node, including a column-foundation connection node structure, comprising the following steps:

[0096] Step 1: Arrange the base 1 horizontally;

[0097] Step 2: Insert the shear seat body 2 into the shear insertion hole 11 of the base 1 from top to bottom, and make the gap between the outer peripheral wall of the shear seat body 2 and the inner peripheral wall of the shear insertion hole 11 uniform to form an annular mortar pouring cavity 12;

[0098] Step 3: pour mortar into the mortar pouring cavity 12. After the mortar is cured, the shear seat body 2 is fixedly connected to the shear insertion hole 11 of the base 1, and an annular seismic isolation layer that can absorb and buffer external impact force is formed around the shear seat body 2;

[0099] Step 4: Install the column 3 so that the anchor rod assembly 31 at the bottom end of the column 3 is correspondingly implanted into the anchor insertion hole 211 to fix the column 3 on the shear-resistant seat 2.

[0100] Another embodiment provides a construction method of a column-foundation connection node, including a column-foundation connection node structure, comprising the following steps:

[0101] Step 1: Arrange the base 1 horizontally;

[0102] Step 2: Assemble the shear seat 2 and the column 3; implant the anchor rod assembly 31 at the bottom of the column 3 into the anchor insertion hole 211 to fix the column 3 and the shear seat 2 to form a combination of the shear seat 2 and the column 3;

[0103] Step 3: Insert the shear seat body 2 of the assembly into the shear insertion hole 11 of the base 1 from top to bottom, and make the gap between the outer peripheral wall of the shear seat body 2 and the inner peripheral wall of the shear insertion hole 11 uniform to form an annular mortar pouring cavity 12;

[0104] Step 4: pour mortar into the mortar pouring cavity 12. After the mortar solidifies, the shear seat body 2 is fixedly connected to the shear insertion hole 11 of the base 1, and an annular seismic isolation layer that can absorb and buffer external impact force is formed around the shear seat body 2.

[0105] In some embodiments, a calculation sheet for a column-foundation connection node structure is provided, wherein Table 1 provides a design basis;

[0106] Table 1 Design basis table

[0107]

[0108] Specifically, Table 2 provides the shear and bending calculation data of the rib assembly 32; the calculation formula used is:

[0109] Fv=fv×A ce ×γ

[0110] M=σ y ×Z

[0111] The shear strength design value is f v , the end face pressure bearing area is A ce , safety factor γ, design value of shear bearing capacity of steel plate (single) F v , yield strength σ y , section modulus Z maximum bending moment M.

[0112] Table 2 Calculation data of rib plate assembly

[0113]

[0114]

[0115] It can be seen from the calculation results given in Table 2 that according to the basic properties of the rib assembly 32, by considering the gains in shear and bending resistance of the rib assembly 32, in terms of shear resistance, the combination of a single shear plug plate 2 321 and a rib 322 can increase the shear bearing capacity by 108 kN; in terms of bending resistance, it is proved that the combination of a single shear plug plate 2 321 and a rib 322 can withstand a maximum bending moment of 440.63 kN·m, which indirectly proves that the rib assembly 32 can fix the node and proves that the design of the rib assembly 32 is reasonable.

[0116] Specifically, the anchor body 23 is an inverted cone-shaped concrete block. Table 3 gives the design calculation data of the tensile bearing capacity of the anchor body 23; the calculation formula used is:

[0117] N Rk,c =N 0 Rk,c ×(A c,N / A 0 c,N )×Ψ S,N ×Ψ re,N ×Ψ ec,N ×Ψ M,N

[0118]

[0119] A 0 c,N =s cr,N ×s cr,N

[0120] A c,N =(c1+s1+0.5s cr,N )×(c2+s2+0.5s cr,N )

[0121] Ψ S,N =0.7+0.3×(c min / c cr,N )

[0122] Ψ re,N =0.5+(h ef / 200)

[0123] Ψ ec,N =1 / [1+2×(e N / s cr,N )]

[0124] N Rd,c =N Rk,c / γ Mc

[0125]

[0126] Among them, the standard value of the tensile bearing capacity of the ideal concrete vertebral body under failure is N 0 Rk,c , critical edge distance for tensile bearing capacity s cr,N , the characteristic edge distance c of the anchor cr,N , the ideal concrete cone failure projection area A 0 c,N , margin c1 in direction 1, margin c2 in direction 2, spacing s1 in direction 1, spacing s2 in direction 2, actual concrete vertebral body damage projection area A c,N , minimum margin c min , the influence coefficient of edge distance on tensile bearing capacity Ψ s,N , the influence coefficient of reinforcement on tensile bearing capacity Ψ re,N , the influence coefficient of bending moment on tensile bearing capacity Ψ M,N , eccentricity e N , the influence coefficient of load eccentricity on tensile bearing capacity Ψ ec,N , standard value of tensile bearing capacity of concrete vertebral body under failure N Rk,c , the tensile bearing capacity partial factor of concrete vertebral body failure γ Mc , design value of tensile bearing capacity of concrete vertebral body under failure N Rd,c , number of anchors n, design value of tensile bearing capacity of concrete vertebral body under failure

[0127] Table 3 Calculation data of anchor body 23

[0128]

[0129]

[0130] The calculation results given in Table 3 show that, according to the basic properties of the anchor body 23, the anchor body 23 is calculated to be subjected to the maximum force when it is destroyed by the concrete cone. Compared with the traditional solution, the anchoring force is increased by 70.58 kN, which proves that the anchor body 23 is reasonably set at the bottom of the main seat body 21.

[0131] Specifically, Table 4 gives the relevant parameters and function descriptions of the graphene nanosheets incorporated into the concrete of the prefabricated base.

[0132] Table 4 Related parameters of graphene nanosheets

[0133]

[0134]

[0135] It can be seen that the composite materials of graphene nanosheets and traditional concrete have excellent mechanical properties, electrical and thermal conductivity, durability and corrosion resistance. At the same time, the introduction of graphene can also improve the environmental protection and durability of concrete.

[0136] Specifically, the mortar poured in the mortar pouring cavity 12 and the mortar pouring cavity 2 14 is made of high-strength polymer mortar. The relevant parameters of the high-strength polymer mortar are shown in Table 5.

[0137] Table 5 High strength polymer mortar parameters

[0138]

[0139] It can be seen that the high-strength polymer mortar improves the adhesion, crack resistance and waterproofness of the mortar through the introduction of polymer, and provides better weather resistance and chemical corrosion resistance.

[0140] Specifically, the high entropy alloy coating sprayed on the outer surface of the metal prefabricated components such as the shear seat 2, the shear plug 1 22, the shear plug 2 321, the rib 322 and the anchor sleeve 312 has excellent wear resistance, corrosion resistance, oxidation resistance and high temperature stability. FCC and BCC and dual-phase high entropy alloys have the following advantages in comparison with traditional metal materials such as austenitic steel, low carbon steel, twin-induced plasticity steel, aluminum alloy, titanium alloy, nickel-based high-temperature alloy, magnesium alloy, etc. in terms of tensile / compressive strength, plasticity, specific strength and other mechanical properties:

[0141] High-temperature alloys have higher strength and ductility than traditional metals at room temperature, and can cover almost all the properties of traditional metal materials; the compressive strength of traditional metals is between 1000–2300MPa, and the plasticity is between 1% and 15%, while high-entropy alloys significantly improve the compressive strength, which can be as high as 4390MPa. In some materials, the room temperature compressive plasticity can be as high as 97%. This is difficult to achieve in traditional metal materials. Most single-phase FCC materials show tensile mechanical properties similar to those of nickel-based high-temperature alloys and austenitic steels. But the strength is lower than that of the second-generation high-strength steel. For BCC high-entropy alloys, most of them are composed of refractory metals, and the mechanical properties are similar to those of TRIP and DP steels. For dual-phase high-entropy alloys (FCC+BCC), the performance is similar to that of TRIP and DP steels, comparable to martensitic steels, up to 8GPa, and accompanied by 6% plasticity. For BCC+HCP high-entropy alloys, the mechanical properties are between the third-generation austenitic stainless steel and martensitic steel. The comparison of specific strength shows that when the service temperature reaches above 600°C, its specific strength drops sharply. Despite this, high entropy alloys still have the potential to replace nickel-based high-temperature alloys.

[0142] Specifically, the performance and parameters of the waterproof breathable membrane are shown in Table 6.

[0143] Table 6 Performance and parameters of waterproof breathable membrane

[0144]

[0145] The main component of the waterproof breathable membrane is polytetrafluoroethylene, the thickness is 0.2mm, the surface is coated, and the air permeability is 200[g / (m 2 ·24h)], impermeability: 1500mm water column for 2h without leakage, tensile performance 260 (N / 50mm), temperature resistance from -40℃ to 80℃. The waterproof breathable membrane will play a good role in protecting the more important nodes in the case of condensation indoors, preventing water seepage and corrosion of steel.

[0146] Specifically, finite element analysis was performed using finite element software ANSYS. Fig.15 The equivalent stress diagram of the rib plate assembly of the column-foundation connection node structure is given; Fig.16 The equivalent stress diagram of the anchor body of the connection node between the column and the foundation is given; Fig.17 The half-section view of the equivalent stress of the anchor body of the connection node between the column and the foundation is given; Fig.18 The equivalent stress cross-sectional view of the anchor body of the column and foundation connection node structure is given; the results verify that the rib plate assembly and the anchor body can improve the shear and bending resistance and anchoring force, and the design is reasonable.

[0147] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0148] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A column and foundation connection node structure, characterized in that: include: A base (1), wherein a shear-resistant insertion hole (11) is provided at the top of the base (1); A shear seat body (2); the shear seat body (2) is inserted into the shear insertion hole (11), and a mortar pouring cavity (12) for pouring mortar to fix the shear seat body (2) in the shear insertion hole (11) is defined between the outer peripheral wall of the shear seat body (2) and the inner peripheral wall of the shear insertion hole (11); an anchoring insertion hole (211) is provided at the top of the shear seat body (2); A column (3), wherein an anchor rod assembly (31) is fixed at the bottom end of the column (3), and the anchor rod assembly (31) is implanted in the anchor insertion hole (211) to fixedly connect the column (3) and the shear-resistant seat body (2).

2. A column and foundation connection node structure according to claim 1, characterized in that: The inner wall of the anti-shear insertion hole (11) is provided with an anti-shear slot (111); the anti-shear slot (111) corresponds to the side wall of the top end of the base (1) and extends to the top end of the base (1) to form an insertion opening (1111); The anti-shear seat (2) comprises a main seat (21) and an anti-shear plug plate (22); the top of the main seat (21) is provided with the anchoring plug hole (211); the anti-shear plug plate (22) is fixed to the outer peripheral wall of the main seat (21); the main seat (21) can be inserted into the anti-shear plug hole (11), and drive the anti-shear plug plate (22) to be inserted from the insertion port (1111) into the anti-shear slot (111), so as to define the mortar casting cavity (12) between the outer peripheral walls of the main seat (21) and the anti-shear plug plate (22) and the inner peripheral walls of the anti-shear plug hole (111) and the anti-shear slot (111).

3. A column and foundation connection node structure according to claim 2, characterized in that: Mortar is poured into the mortar pouring cavity 1 (12) to form a seismic isolation layer that can absorb and buffer external impact force after the mortar is cured.

4. A column and foundation connection node structure according to claim 3, characterized in that: The anchor rod assembly (31) comprises a connecting rod (311) and an anchor sleeve (312); the connecting rod (311) is vertically fixed to the bottom end of the column (3); the anchor sleeve (312) is sleeved on the connecting rod (311); the anchor sleeve (312) can be implanted in the anchor socket (211) to fixedly connect the column (3) and the shear-resistant seat (2).

5. A column and foundation connection node structure according to claim 4, characterized in that: One end of the connecting rod (311) is inserted into the column (3), the other end of the connecting rod (311) has an external thread, and the inner hole of the anchor sleeve (312) is provided with an internal thread; the anchor sleeve (312) is threadedly connected to the other end of the connecting rod (311) and is fastened to the bottom end of the column (3).

6. A column and foundation connection node structure according to claim 1, characterized in that: A key groove (13) is provided on the outer peripheral side of the top end of the base (1) corresponding to the anti-shear insertion hole (11); A rib plate assembly (32) is fixed to the outer peripheral side of the bottom of the column (3), and a second shear plate (321) is provided at the bottom end of the rib plate assembly (32); the second shear plate (321) can be adapted to be inserted into the keyway (13) to connect the column (3) to the base (1).

7. A column and foundation connection node structure according to claim 6, characterized in that: The rib plate assembly (32) comprises a rib plate (322), wherein the rib plate (322) is fixed to the outer peripheral side of the bottom of the column (3); the second shear-resistant plug plate (321) is fixed to the bottom end of the rib plate (322); when the second shear-resistant plug plate (321) is adapted to be inserted into the keyway (13), the bottom end of the rib plate (322) abuts against the top end of the base (1).

8. A column and foundation connection node structure according to claim 1, characterized in that: An anchor body (23) is fixed at the bottom end of the anti-shear seat body (2); the bottom of the anti-shear insertion hole (11) has a second mortar casting cavity (14) for accommodating the anchor body (23); the anchor body (23) can be anchored in a concrete layer cast in the second mortar casting cavity (14).

9. A construction method for a connection node between a column and a foundation, characterized in that: A column and foundation connection node structure according to any one of claims 1 to 8, comprising the following steps: Step 1: Arrange the base (1) horizontally; Step 2: inserting the shear seat body (2) from top to bottom into the shear insertion hole (11) of the base (1), and making the gap between the outer peripheral wall of the shear seat body (2) and the inner peripheral wall of the shear insertion hole (11) uniform to form an annular mortar pouring cavity (12); Step 3: pouring mortar into the mortar pouring cavity 1 (12); after the mortar solidifies, the shear seat body (2) is fixedly connected to the shear insertion hole (11) of the base (1), and an annular seismic isolation layer capable of absorbing and buffering external impact force is formed around the shear seat body (2); Step 4: Install the column (3) so that the anchor rod assembly (31) at the bottom end of the column (3) is correspondingly implanted into the anchor insertion hole (211) to fix the column (3) on the shear-resistant seat (2).

10. A construction method for a connection node between a column and a foundation, characterized in that: A column and foundation connection node structure according to any one of claims 1 to 8, comprising the following steps: Step 1: Arrange the base (1) horizontally; Step 2: Assemble the shear-resistant seat body (2) and the column (3); implant the anchor rod assembly (31) at the bottom end of the column (3) into the anchor insertion hole (211) to fix the column (3) and the shear-resistant seat body (2) to form a combination of the shear-resistant seat body (2) and the column (3); Step 3: inserting the shear seat body (2) of the assembly into the shear insertion hole (11) of the base (1) from top to bottom, and making the gap between the outer peripheral wall of the shear seat body (2) and the inner peripheral wall of the shear insertion hole (11) uniform to form an annular mortar pouring cavity (12); Step 4: pour mortar into the mortar pouring cavity 1 (12). After the mortar solidifies, the shear seat body (2) is fixedly connected to the shear insertion hole (11) of the base (1), and an annular seismic isolation layer capable of absorbing and buffering external impact force is formed around the shear seat body (2).

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