Embedded type column foot construction structure and construction method thereof

Abstract

The invention discloses an embedded column foot construction structure and a construction method thereof. A concrete cushion layer is poured and fixed on a foundation; foundation bolts are arranged on the periphery of the foundation short column; the top end of the foundation bolt is in threaded connection with a T-shaped nut; a plurality of vertically-through connecting steel bars are pre-buried and fixed in the outer layer, and leveling nuts are in threaded connection with the bottom ends of the connecting steel bars. The concrete pouring layer is poured and fixed below the foundation short column and in a hollow cavity in the foundation short column, is lower than the top edge of the hollow cavity and forms a shear-resistant groove; the prefabricated mold frame sleeves the outer side of the foundation short column; a column bottom plate is arranged at the bottom end of the column component, a through hole penetrating through the T-shaped nut is formed in the column bottom plate, the column bottom plate is supported on the protruding edge of the T-shaped nut, the locking nut is screwed to the top end of the foundation bolt, and the column bottom plate abuts against the T-shaped nut. The bottom face of the column bottom plate is provided with shear keys inserted into the shear grooves, and after the column components are connected, concrete is poured into the shear grooves and the prefabricated mold frame to wrap the connecting ribs and the bottoms of the column components.

Description

Technical Field

[0001] This invention relates to the field of civil engineering technology, and more specifically to an embedded column base construction structure and its construction method. Background Technology

[0002] The existing on-site construction process and methods for embedded column bases are as follows:

[0003] Step 1: Foundation concrete pad;

[0004] Step 2: Laying out the lines;

[0005] Step 3: Binding the foundation reinforcement;

[0006] Step 4: Formwork erection;

[0007] Step 5: Pouring concrete for the foundation cap / bottom beam;

[0008] Step 6: Install anchor bolts and tie short column reinforcement bars;

[0009] Step 7: Formwork erection;

[0010] Step 8: Pour concrete;

[0011] Step 9: Demolding;

[0012] Step 10: Install steel columns / beams;

[0013] Step 11: Tie the reinforcing bars of the short column;

[0014] Step 12: Short column formwork;

[0015] Step 13: Pour grout at the column base;

[0016] Step 14: Pour concrete for the foundation short columns;

[0017] Step 15: Demolding;

[0018] Step 16: Construction of foundation walls and ring beams;

[0019] Step 17: Backfill with soil;

[0020] Traditional embedded column base construction methods involve complex processes and numerous steps; the civil engineering and steel structure work overlaps, preventing continuous construction. This results in low efficiency, high costs, potential for foundation displacement, and poor quality control.

[0021] Therefore, how to provide a simple and effective embedded column base construction structure and its construction method is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0022] In view of this, the present invention provides an embedded column base construction structure and its construction method, aiming to solve the above-mentioned technical problems.

[0023] To achieve the above objectives, the present invention adopts the following technical solution:

[0024] An embedded column base construction structure includes:

[0025] A concrete cushion layer; the concrete cushion layer is cast and fixed on the foundation, and multiple embedded parts are pre-embedded on the top surface of the concrete cushion layer;

[0026] The foundation short column comprises an inner layer and an outer layer. The inner layer has a hollow cavity running vertically through its center. Vertical anchor bolts are embedded within the inner layer and run vertically through it, with external threads on the end sidewalls of the anchor bolts. An inverted T-nut is threaded to the top end of each anchor bolt. Multiple vertically running connecting reinforcing bars are embedded and fixed within the outer layer. A leveling nut is threaded to the bottom end of each connecting reinforcing bar, and the leveling nut is welded to the embedded part after leveling. The bottom connecting reinforcing bars are fixed with binding reinforcing bars, and the top connecting reinforcing bars are bound with stirrups on their outer sides.

[0027] A concrete pouring layer; the concrete pouring layer is poured and fixed below the short foundation column and inside the hollow cavity therein, and is lower than the top edge of the hollow cavity, forming a shear groove.

[0028] Precast formwork frame; the precast formwork frame is fitted outside the foundation short column, with its bottom end abutting against the concrete pouring layer and its top end higher than the top end of the connecting steel bars;

[0029] A column component; the column component has a column base plate at its bottom end, the column base plate has a through hole through the T-nut and is supported on the protruding edge of the T-nut, the locking nut is tightened on the top of the anchor bolt and the column base plate is pressed against the T-nut; the bottom surface of the column base plate has a shear key that is inserted into the shear groove, after the column component is connected, concrete is poured inside the shear groove and the precast mold frame to wrap the connecting bar and the bottom of the column component.

[0030] Preferably, in the above-mentioned precast beam with inclined pull hole, a washer is provided between the T-nut and the locking nut.

[0031] Preferably, in the above-mentioned precast beam with inclined tie holes, the column member is an H-shaped steel column, and the side wall of the H-shaped steel column located inside the precast mold frame is fixed with shear studs.

[0032] Preferably, in the above-mentioned precast beam with inclined hole, the column member is an H-shaped steel column, the bottom end of the column member has the column base plate, the bottom surface of the column base plate has a shear key for inserting into the shear groove, and after connecting the H-shaped steel column, concrete is poured into the shear groove and the bottom of the column member to wrap the anchor bolts, the connecting steel bars and the shear studs.

[0033] Preferably, in the above-mentioned precast beam with inclined pull holes, the leveling nut has a radially protruding anchor plate on its outer side, and the anchor plate is used for welding and fixing to the reinforcing bar.

[0034] Preferably, in the above-mentioned precast beam with inclined tie-rod holes, the foundation short column is a concrete column with a rectangular cross-section, and the hollow cavity has a circular cross-section.

[0035] Preferably, in the above-mentioned precast beam with inclined tie holes, the concrete pouring layer includes a lower layer located below the foundation short column and enclosing the anchor bolts and the reinforcing bars, and an upper layer cast in the lower part of the hollow cavity.

[0036] Preferably, in the above-mentioned precast beam with inclined pull holes, the column component is a hollow concrete column structure, and multiple precast components are vertically connected by snap-fit ​​connectors; connecting ribs are pre-embedded and fixed inside the precast components, and the connecting ribs extend out of the end face of the precast components for connection; the exposed part of the connecting ribs has external threads; the ends of the connecting ribs of the precast components that need to be connected are connected by snap-fit ​​connectors engaging with the external threads.

[0037] Preferably, in the aforementioned precast beam with inclined pull holes, the snap-fit ​​component includes an inner limiting nut, a split sleeve, and spring clips; the number of inner limiting nuts is two, and they are respectively threaded to the two threaded ends of the ribs / rods that need to be connected; the split sleeve is a sleeve structure composed of two half-shells, and a limiting channel is formed inside the split sleeve. The split sleeve is clamped on the outside of the two connecting ribs that are connected, and the inner limiting nut is limited and clamped through the limiting channel; the number of spring clips is multiple, and they are circular clip structures formed by twisting and deforming steel wires. The spring clips are fastened to the outside of the split sleeve.

[0038] This invention also provides a construction method for an embedded column base structure, specifically including the following steps:

[0039] S1. Pour the concrete cushion layer on the foundation;

[0040] S2, Laying out the line;

[0041] S3. Install the foundation short columns and tie the reinforcing bars for fixation;

[0042] S4. Erect formwork and pour the concrete layer into the hollow cavity at the bottom of the foundation short column and inside it;

[0043] S5. Tie the stirrups and install the precast mold frame;

[0044] S6. Construction of foundation walls and ring beams;

[0045] S7. Backfill soil;

[0046] S8. Install the column component;

[0047] S9. Grouting material for column base pouring;

[0048] S10, Concrete is poured at the column base.

[0049] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an embedded column base construction structure and its construction method, which reduces construction procedures; achieves construction continuity, improves quality controllability and reliability; shortens the construction period and improves efficiency. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0051] Figure 1 The attached figure is a front view of the basic short column provided by the present invention;

[0052] Figure 2 The attached figure is a top view of the basic short column provided by the present invention;

[0053] Figure 3 The attached figure is a structural schematic diagram of the first to third steps of the construction method of the embedded column base construction structure provided by the present invention;

[0054] Figure 4 The attached figure is a structural schematic diagram of the fourth step of the construction method of the embedded column base construction structure provided by the present invention;

[0055] Figure 5 The attached figure is a structural schematic diagram of the fifth step of the construction method for the embedded column base structure provided by the present invention;

[0056] Figure 6 The attached figure is a top view of the fifth step of the construction method for the embedded column base structure provided by the present invention;

[0057] Figure 7The attached figure is a structural schematic diagram of the seventh step of the construction method of the embedded column base construction structure provided by the present invention;

[0058] Figure 8 The attached figure is a structural schematic diagram of the eighth step of the construction method of the embedded column base construction structure provided by the present invention;

[0059] Figure 9 The attached figure is a schematic diagram of the T-nut connection provided by the present invention;

[0060] Figure 10 The attached figure is a structural schematic diagram of the ninth step of the construction method of the embedded column base construction structure provided by the present invention;

[0061] Figure 11 The attached figure is a structural schematic diagram of the tenth step of the construction method of the embedded column base structure provided by the present invention;

[0062] Figure 12 The attached figure is a structural schematic diagram of the prefabricated connection component provided by the present invention;

[0063] Figure 13 The attached figure is provided by the present invention. Figure 12 Enlarged view of the card connector.

[0064] in:

[0065] 1- Concrete foundation;

[0066] 2-Basic short column;

[0067] 21-Hollow cavity; 22-Anchor bolt; 23-Leveling nut; 231-Anchor plate; 24-T-nut; 25-Connecting reinforcement; 26-Reinforcing bar; 27-Stirrup; 28-Shear groove;

[0068] 3- Concrete pouring layer;

[0069] 4-Precast mold frame;

[0070] 5-Columnar components;

[0071] 51-Column base plate; 52-Locking nut; 53-Shear key; 54-Washer; 55-Shear stud;

[0072] 6-Foundation;

[0073] 7-Embedded parts;

[0074] 8-Card connector;

[0075] 81-Inner limiting nut; 82-Separate sleeve; 83-Spring clip;

[0076] 9-Prefabricated components;

[0077] 91-Connecting bar. Detailed Implementation

[0078] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0079] See appendix Figure 1 , 2 According to embodiments of the present invention, an embedded column base construction structure is disclosed, comprising:

[0080] Concrete cushion 1; Concrete cushion 1 is poured and fixed on foundation 6, and multiple embedded parts 7 are pre-embedded on the top surface of concrete cushion 1.

[0081] The foundation short column 2 includes an inner layer and an outer layer. The inner layer has a hollow cavity 21 that runs vertically through the center. The inner layer has vertically embedded anchor bolts 22 around its perimeter, and the end sidewalls of the anchor bolts 22 have external threads. The top end of the anchor bolts 22 is threaded with an inverted T-nut 24. The outer layer has multiple vertically connected reinforcing bars 25 embedded inside. The bottom end of the connecting reinforcing bars 25 is threaded with a leveling nut 23. The leveling nut 23 is leveled and welded to the embedded part 7. The bottom connecting reinforcing bars 25 are fixed with binding reinforcing bars 26, and the top connecting reinforcing bars 25 are bound with stirrups 27 on the outside.

[0082] Concrete pouring layer 3; Concrete pouring layer 3 is poured and fixed below the foundation short column 2 and inside the hollow cavity 21, and is lower than the top edge of the hollow cavity 21, forming a shear groove 28.

[0083] Precast formwork 4; The precast formwork 4 is fitted on the outside of the foundation short column 2, with its bottom end abutting against the concrete pouring layer 3 and its top end higher than the top end of the connecting steel bar 25;

[0084] Column component 5; the bottom end of column component 5 has a column base plate 51, the column base plate 51 has a through hole through the T-nut 24 and is supported on the protruding edge of the T-nut 24, the locking nut 52 is tightened on the top of the anchor bolt 22 and the column base plate 51 is pressed against the T-nut 24; the bottom surface of the column base plate 51 has a shear key 53 that is inserted into the shear groove 28, after connecting column component 5, concrete is poured inside the shear groove 28 and the precast mold frame 4 to wrap the connecting bar 25 and the bottom of column component 5.

[0085] To further optimize the above technical solution, a washer 54 is provided between the T-nut 24 and the locking nut 52.

[0086] To further optimize the above technical solution, the column component 5 is an H-shaped steel column, and the side wall of the H-shaped steel column inside the precast mold frame 4 is fixed with shear studs 55.

[0087] To further optimize the above technical solution, the column component 5 is an H-shaped steel column. The bottom end of the column component 5 has a column base plate 51. The bottom surface of the column base plate 51 has a shear key 53 that is inserted into the shear groove 28. After connecting the H-shaped steel column, concrete is poured into the shear groove 28 and the bottom of the column component 5 to wrap the anchor bolts 22, connecting steel bars 25 and shear studs 55.

[0088] To further optimize the above technical solution, the leveling nut 23 has a radially protruding anchor plate 231 on its outer side, which is used to weld and fix it to the reinforcing bar 26.

[0089] To further optimize the above technical solution, the foundation short column 2 is a concrete column with a rectangular cross section, and the hollow cavity 21 has a circular cross section.

[0090] To further optimize the above technical solution, the concrete pouring layer 3 includes a lower part located below the foundation short column 2 and enclosing the anchor bolts 22 and the reinforcing bars 26, and an upper part cast in the lower part of the hollow cavity 21.

[0091] To further optimize the above technical solution, the column component 5 is a hollow concrete column structure, and multiple precast components 9 are vertically connected by snap-fit ​​connectors 8; connecting ribs 91 are pre-embedded and fixed inside the precast components 9, and the connecting ribs 91 extend out of the end face of the precast components 9 for connection; the exposed part of the connecting ribs 91 has external threads; the ends of the connecting ribs 91 of the precast components 9 that need to be connected are connected by snap-fit ​​connectors 8 and external threads.

[0092] To further optimize the above technical solution, the snap-fit ​​component 8 includes an inner limiting nut 81, a split sleeve 82, and a spring clip 83; there are two inner limiting nuts 81, which are threadedly connected to the two threaded ends of the ribs / rods that need to be connected; the split sleeve 82 is a sleeve structure composed of two half-shells, and a limiting channel is formed inside the split sleeve 82. The split sleeve 82 is clamped on the outside of the two connecting ribs 91 that are connected, and the inner limiting nut 82 is limited and clamped through the limiting channel; there are multiple spring clips 83, which are circular clip structures formed by twisting and deforming steel wires. The spring clips 83 are clamped on the outside of the split sleeve 82.

[0093] The construction method for the embedded column base structure provided in this embodiment specifically includes the following steps:

[0094] S1, see appendix Figure 3 A concrete cushion layer 3 is poured on foundation 6;

[0095] S2, Laying out the line;

[0096] S3. Install the foundation short column 2 and tie the steel bars 26 for fixation;

[0097] S4, see appendix Figure 4 Formwork was erected, and a concrete pouring layer 3 was poured at the bottom of the foundation short column 2 and in the hollow cavity 21 inside it.

[0098] S5, see appendix Figure 5 and 6 27 stirrups were tied and 4 precast formwork frames were installed;

[0099] S6. Construction of foundation walls and ring beams;

[0100] S7, see appendix Figure 7 Backfill soil;

[0101] S8, see appendix Figure 8 and 9 Install column components 5;

[0102] S9, see appendix Figure 10 Grouting material is poured at the column base;

[0103] S10, see appendix Figure 11 Concrete was poured at the base of the column.

[0104] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0105] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A type of embedded column base construction structure, characterized in that, include: Concrete cushion layer (1); the concrete cushion layer (1) is poured and fixed on the foundation (6), and multiple embedded parts (7) are pre-embedded on the top surface of the concrete cushion layer (1); The foundation short column (2) includes an inner layer and an outer layer; the inner layer has a hollow cavity (21) that runs vertically through the middle; the inner layer has vertically embedded anchor bolts (22) that run vertically through the inside, and the end sidewall of the anchor bolts (22) has external threads; the top end of the anchor bolts (22) is threaded with an inverted T-nut (24); the outer layer has multiple vertically connected reinforcing bars (25) that run vertically through the inside, and the bottom end of the connecting reinforcing bars (25) is threaded with a leveling nut (23), and the leveling nut (23) is welded and fixed to the embedded part (7) after leveling; the bottom connecting reinforcing bars (25) are fixed with reinforcing bars (26), and the top connecting reinforcing bars (25) are tied with stirrups (27) on the outside; Concrete pouring layer (3); the concrete pouring layer (3) is poured and fixed in the hollow cavity (21) below and inside the foundation short column (2), and is lower than the top edge of the hollow cavity (21), forming a shear groove (28); Precast formwork (4); the precast formwork (4) is fitted on the outside of the foundation short column (2), with its bottom end abutting against the concrete pouring layer (3) and its top end higher than the top end of the connecting steel bar (25); Column component (5); the bottom end of the column component (5) has a column base plate (51), the column base plate (51) has a through hole through the T-nut (24) and is supported on the protruding edge of the T-nut (24), the locking nut (52) is tightened on the top of the anchor bolt (22) and the column base plate (51) is pressed against the T-nut (24); the bottom surface of the column base plate (51) has a shear key (53) inserted into the shear groove (28), after connecting the column component (5), concrete is poured inside the shear groove (28) and the precast mold frame (4) to wrap the connecting bar (25) and the bottom of the column component (5).

2. The embedded column base construction structure according to claim 1, characterized in that, A washer (54) is provided between the T-nut (24) and the locking nut (52).

3. The embedded column base construction structure according to claim 1, characterized in that, The column component (5) is an H-shaped steel column, and the side wall of the H-shaped steel column located inside the precast mold frame (4) is fixed with shear studs (55).

4. The embedded column base construction structure according to claim 3, characterized in that, The column component (5) is an H-shaped steel column. The bottom end of the column component (5) has a column base plate (51). The bottom surface of the column base plate (51) has a shear key (53) that is inserted into the shear groove (28). After connecting the H-shaped steel column, concrete is poured into the shear groove (28) and the bottom of the column component (5) to wrap the anchor bolt (22), the connecting steel bar (25) and the shear stud (55).

5. The embedded column base construction structure according to claim 1, characterized in that, The leveling nut (23) has a radially protruding anchor plate (231) on its outer side, which is used to weld and fix to the reinforcing bar (26).

6. The embedded column base construction structure according to claim 1, characterized in that, The foundation short column (2) is a concrete column with a rectangular cross-section, and the hollow cavity (21) has a circular cross-section.

7. The embedded column base construction structure according to claim 1, characterized in that, The concrete pouring layer (3) includes a lower part located below the foundation short column (2) and enclosing the anchor bolt (22) and the reinforcing bar (26), and an upper part cast in the lower part of the hollow cavity (21).

8. The embedded column base construction structure according to claim 1, characterized in that, The column component (5) is a hollow concrete column structure, and multiple precast components (9) are vertically connected by snap-fit ​​connectors (8); a connecting rib (91) is pre-embedded and fixed inside the precast component (9), and the connecting rib (91) extends out of the end face of the precast component (9) for connection; the exposed part of the connecting rib (91) has external threads; the ends of the connecting ribs (91) of the precast components (9) that need to be connected are connected by the snap-fit ​​connectors (8) and the external threads.

9. The embedded column base construction structure according to claim 1, characterized in that, The snap-fit ​​component (8) includes an inner limiting nut (81), a split sleeve (82), and a spring clip (83). There are two inner limiting nuts (81), which are threadedly connected to the two threaded ends of the ribs / rods that need to be connected. The split sleeve (82) is a sleeve structure composed of two half-shells. A limiting channel is formed inside the split sleeve (82). The split sleeve (82) is clamped on the outside of the two connected ribs (91) and the inner limiting nut (82) is limited and clamped through the limiting channel. There are multiple spring clips (83), which are circular clip structures formed by twisting and deforming steel wire. The spring clips (83) are clamped on the outside of the split sleeve (82).

10. A construction method for an embedded column base structure according to any one of claims 1-9, characterized in that, Specifically, the following steps are included: S1. Pour the concrete cushion layer (3) on the foundation (6); S2, Laying out the line; S3. Install the foundation short column (2) and tie the reinforcing steel bar (26) for fixation; S4. Formwork is erected, and the concrete pouring layer (3) is poured at the bottom of the foundation short column (2) and in the hollow cavity (21) inside it; S5. Tie the stirrups (27) and install the precast formwork (4); S6. Construction of foundation walls and ring beams; S7. Backfill soil; S8. Install the column component (5); S9. Grouting material for column base pouring; S10, Concrete is poured at the column base.

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