PEC column vertical connection node

Abstract

The utility model relates to the field of fabricated buildings, in particular to a PEC column vertical connection node which comprises an upper PEC column and a lower PEC column, a first plug-in unit and a positioning column are arranged on the bottom face of the upper PEC column, a second plug-in unit and a positioning hole are arranged on the top face of the lower PEC column, the bottom face of the upper PEC column is in butt joint with the top face of the lower PEC column, the positioning column is embedded in the positioning hole, and the upper PEC column and the lower PEC column are in butt joint. The first plug-in piece and the second plug-in piece are mutually plugged, and the flange of the upper PEC column and the flange of the lower PEC column are welded and fixed. According to the PEC column vertical connection node, concrete does not need to be poured at the butt joint position on site, rapid positioning of butt joint of the upper PEC column and the lower PEC column is achieved through cooperation of the positioning columns and the positioning holes, fixed connection of the upper PEC column and the lower PEC column is achieved through mutual insertion of the first insertion piece and the second insertion piece, no lug plate needs to be additionally arranged, and therefore the construction cost is reduced. The connection between the columns is simpler, more efficient and faster, and the material consumption is also saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fabricated building, concretely relates to a PEC column vertical connecting joint. BACKGROUND

[0002] PEC column is a kind of partially coated steel-concrete column, H-shaped steel is used as internal framework, longitudinal reinforcement and stirrup are arranged on the both sides of the web of H-shaped steel, and concrete is formed by pouring.The vertical connection between PEC column, the connecting end of upper and lower PEC column is usually left out a height in prior art and not pre-poured concrete in factory, but the web of upper and lower PEC column is connected together by using connecting steel plate and bolt at construction site, then the cavity of connecting end is poured with concrete on site again.This connecting structure is complicated in procedure and time-consuming, and construction quality is not easy to guarantee.In addition, the connecting end of upper and lower PEC column is usually left with an extruded sprue that needs to be cut off later, not only waste material, but also affect the appearance, increase working hours.In order to facilitate the positioning of the connection of upper and lower PEC column, ear plate is usually arranged on the flange of the connecting end of upper and lower PEC column, after the upper and lower PEC column are connected, the ear plate of upper and lower PEC column is fixed by bolt through connecting plate, which plays a temporary fixing role, after the vertical connection of upper and lower PEC column is completed, the ear plate is cut off, resulting in large construction workload, and there is the situation of waste material. UTILITARY MODEL CONTENT

[0003] The utility model discloses a kind of PEC column vertical connecting joints, the connecting end of upper and lower PEC column is exempted from pouring, upper and lower PEC column need not increase temporary fixing measure when butt joint, with the technical advantages of construction efficient, save material, save construction period, reduce cost.

[0004] To achieve the above object, the technical scheme that the utility model adopts is as follows:

[0005] A kind of PEC column vertical connecting joint, including upper PEC column and lower PEC column, the bottom surface of upper PEC column is equipped with first pair of inserts and positioning column, the top surface of lower PEC column is equipped with second pair of inserts and positioning hole, the bottom surface of upper PEC column and the top surface of lower PEC column are connected, positioning column is embedded in positioning hole, first pair of inserts and second pair of inserts are mutually inserted, the flange of upper PEC column and the flange of lower PEC column are welded and fixed.

[0006] Further, the upper PEC column and lower PEC column all include H-shaped steel, concrete located the both sides of the web of H-shaped steel, longitudinal reinforcement and stirrup are respectively arranged on the both sides of the web of H-shaped steel, first pair of inserts are fixed on the longitudinal reinforcement of upper PEC column, second pair of inserts are fixed on the longitudinal reinforcement of lower PEC column.

[0007] Further, the positioning column at the bottom of the upper PEC column corresponds to the positioning hole at the top of the lower PEC column in number and position, and the H-shaped steel web of the lower PEC column is provided with positioning holes on both sides, and the positioning holes on both sides are staggered.

[0008] Further, the first pair of inserts includes a first sleeve and a plug, the first sleeve is open at the upper and lower ends, and the first sleeve is embedded in the concrete of the upper PEC column, the longitudinal reinforcement of the upper PEC column penetrates into the first sleeve, the longitudinal reinforcement of the upper PEC column is provided with a pier head, the lower part of the pier head is provided with a plug, one end of the plug is embedded in the first sleeve, and the other end of the plug extends out of the first sleeve; the second pair of inserts includes a second sleeve and an elastic clamping piece, the second sleeve is open at the upper and lower ends, and the second sleeve is embedded in the concrete of the lower PEC column, the longitudinal reinforcement of the lower PEC column penetrates into the second sleeve, the longitudinal reinforcement of the lower PEC column is provided with a pier head, and the upper part of the pier head is provided with an elastic clamping piece, the elastic clamping piece is fixed on the second sleeve, and when the first pair of inserts and the second pair of inserts are inserted into each other, the plug penetrates through the elastic clamping piece and is inserted into the second sleeve.

[0009] Further, the diameter of the pier head is greater than the diameter of the longitudinal reinforcement, and the outer wall of the longitudinal reinforcement of the upper PEC column extending into the first sleeve is provided with a telescopic rivet, and the outer wall of the longitudinal reinforcement of the lower PEC column extending into the second sleeve is provided with a telescopic rivet.

[0010] Further, the first sleeve and the second sleeve are filled with corrosion-resistant sealing material.

[0011] Further, the plug is divided into a fixed part, a plug rod and a locking head from top to bottom, the width of the fixed part is greater than the width of the plug rod, the fixed part is embedded in the first sleeve, the plug rod and the locking head are located outside the first sleeve, the lower part of the fixed part extends outward to form a first limiting part, the connection between the fixed part and the plug rod forms a second limiting part, and the connection between the plug rod and the locking head extends outward along the outer circumference to form a third limiting part, the bottom end of the first sleeve abuts against the first limiting part, the second limiting part presses the top end of the elastic clamping piece after the first pair of inserts and the second pair of inserts are inserted into each other, the bottom end of the elastic clamping piece abuts against the third limiting part, the plug rod is inserted into the elastic clamping piece, the locking head penetrates out of the elastic clamping piece, and the contact surface between the second limiting part and the elastic clamping piece is coated with epoxy resin.

[0012] The PEC column vertical connecting joint designed by the utility model can ensure the upper and lower PEC columns to be connected in place without pouring concrete on site, can ensure the pre-poured concrete to be continuous and can ensure good force transmission effect and reduce on-site wet work; the positioning column is arranged on the bottom surface of the upper PEC column in advance, the positioning hole is arranged on the top surface of the lower PEC column, the positioning column and the positioning hole are matched, and the upper and lower PEC columns are quickly positioned; and the first pair of inserts are arranged on the bottom surface of the upper PEC column in advance, the second pair of inserts are arranged on the top surface of the lower PEC column, the first pair of inserts and the second pair of inserts are matched, the upper and lower PEC columns are fixedly connected, an ear plate does not need to be additionally arranged, the connection between the columns is simpler, more efficient and quicker, and the amount of materials is saved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is an internal structure schematic view of the PEC column vertical connecting joint in the embodiment;

[0014] Figure 2 It is an internal structure schematic view of the PEC column vertical connecting joint in the embodiment; Figure 1

[0015] Figure 3 It is an internal structure schematic view of the PEC column vertical connecting joint in the embodiment; Figure 1

[0016] Figure 4 It is an internal structure schematic view of the PEC column vertical connecting joint in the embodiment; Figure 1

[0017] Figure 5 It is a structure schematic view of the first pair of inserts;

[0018] Figure 6 It is a structure schematic view of the second pair of inserts;

[0019] Figure 7 It is an internal structure schematic view of the PEC column vertical connecting joint in the embodiment; Figure 1

[0020] REFERENCE SIGNS:

[0021] 1, longitudinal reinforcement; 2, stirrup; 3, H-shaped steel; 4, concrete; 5, connecting surface; 6, positioning hole; 7, connecting hole; 8, pier head; 9, rivet; 10, first sleeve; 11, fixed part; 12, inserting rod; 13, locking head; 14, first limiting part; 15, second limiting part; 16, third limiting part; 17, second sleeve; 18, elastic clamping piece; 19, anticorrosive sealing material. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model.

[0023] ​​​​This embodiment discloses a vertical connection node for PEC columns, such as... Figures 1 to 4 As shown, the structure mainly includes an upper PEC column and a lower PEC column. Both the upper and lower PEC columns include H-beams 3 and concrete 4 located on both sides of the web of the H-beams 3. Each side of the web of the H-beams 3 is provided with longitudinal reinforcement 1 and stirrups 2. The above structure is the conventional structure of PEC columns in the prior art. In this embodiment, several protruding positioning columns (not shown in the attached figure) are formed on the bottom concrete 4 of the upper PEC column, and a first pair of inserts are pre-embedded in the bottom concrete 4 of the upper PEC column, fixing the first pair of inserts to the ends of the longitudinal reinforcement 1 of the upper PEC column. Similarly, several positioning holes 6 are formed on the top concrete 4 of the lower PEC column, and a second pair of inserts are pre-embedded in the top concrete 4 of the lower PEC column, fixing the second pair of inserts to the ends of the longitudinal reinforcement 1 of the lower PEC column. The positioning columns are used to cooperate with the positioning holes 6 to achieve rapid positioning of the vertical connection between the upper and lower PEC columns, and the first pair of inserts are used to interlock with the second pair of inserts to achieve vertical connection and fixation of the upper and lower PEC columns. Therefore, the number and position of the positioning holes 6 and the positioning columns must correspond. The number of positioning holes 6 is related to the cross-sectional area of ​​the PEC column. The larger the area, the more positioning holes 6 are required. When there are many positioning holes 6, multiple positioning holes 6 need to be set on both sides of the web of the H-beam 3. The positioning holes 6 on both sides of the web need to be staggered to ensure that the upper PEC column can be accurately connected.

[0024] The structure of the first pair of plugins is as follows: Figure 5 As shown, the first pair of inserts includes a first sleeve 10 and a plug. Both the upper and lower ends of the first sleeve 10 are open, with the lower end being more open than the upper end. The first sleeve 10 is completely embedded in the concrete 4 of the upper PEC column. The bottom end of the longitudinal reinforcement 1 of the upper PEC column passes through the first sleeve 10, and a pier 8 is provided at the bottom end of the longitudinal reinforcement 1. The diameter of the pier 8 is larger than the diameter of the longitudinal reinforcement 1. Retractable rivets 9 are provided on the outer wall of the longitudinal reinforcement 1 extending into the first sleeve 10. Both the pier 8 and the rivets 9 provide pull-out resistance, improving the vertical connection strength of the PEC column and reducing the risk of structural instability. The first sleeve 10 has a plug located at the lower part of the head 8. The plug is divided into a fixing part 11, a insertion rod 12, and a locking head 13 from top to bottom. The width of the fixing part 11 is greater than the width of the insertion rod 12. The fixing part 11 is embedded in the first sleeve 10 for fixation. The insertion rod 12 and the locking head 13 both extend out of the first sleeve 10. The lower outer circumference of the fixing part 11 extends horizontally outward to form a first limiting part 14. The diameter of the insertion rod 12 gradually decreases from top to bottom. The connection between the fixing part 11 and the insertion rod 12 forms a second limiting part 15. The bottom end of the first sleeve 10 abuts against the first limiting part 14. The connection between the insertion rod 12 and the locking head 13 extends horizontally outward along the outer circumference to form a third limiting part 16. The diameter of the locking head 13 gradually decreases from top to bottom, forming a frustum structure.

[0025] The structure of the second pair of plugins is as follows:Figure 6 As shown in the drawings, the second pair of inserts comprises a second sleeve 17 and an elastic clamping piece 18, the upper and lower ends of the second sleeve 17 are both open, the upper end is larger than the lower end, and the second sleeve 17 is completely embedded in the concrete 4 of the lower PEC column. The top of the longitudinal reinforcement 1 of the lower PEC column penetrates into the second sleeve 17, and a pier head 8 is arranged at the top end of the longitudinal reinforcement 1 of the lower PEC column, the diameter of the pier head 8 is larger than that of the longitudinal reinforcement 1, and the longitudinal reinforcement 1 of the lower PEC column is provided with a telescopic rivet 9 on the outer wall penetrating into the second sleeve 17. An elastic clamping piece 18 is arranged at the upper part of the pier head 8 in the second sleeve 17, the elastic clamping piece 18 is a hollow cylindrical structure with open upper and lower ends and has elastic deformation capacity, and the top end of the elastic clamping piece 18 is fixed to the top open end of the second sleeve 17.

[0026] As shown in the drawings, Figure 1 and Figure 7 When the upper PEC column and the lower PEC column are vertically connected, the lower PEC column is fixed first, the second pair of inserts on the top surface of the lower PEC column forms a connecting hole 7, the positioning column at the bottom of the upper PEC column is embedded into the positioning hole 6 at the top of the lower PEC column, the first pair of inserts and the second pair of inserts are inserted into each other, so that the bottom surface of the upper PEC column and the top surface of the lower PEC column are in contact to form a connecting surface 5, and the precast concrete 4 of the upper and lower PEC columns is vertically continuous, thereby ensuring good force transmission effect. As shown in the drawings, Figure 7 The insertion rod 12 and the locking head 13 of the first pair of inserts are both inserted into the second pair of inserts, the elastic clamping piece 18 starts to expand outward, the locking head 13 penetrates through the inner cavity of the elastic clamping piece 18 and extends to the outside, the elastic clamping piece 18 automatically resets and clamps the locking head 13, and the bottom end of the elastic clamping piece 18 is clamped at the third limiting portion 16. Before the first pair of inserts and the second pair of inserts are inserted, epoxy resin is brushed on the surface of the second limiting portion 15 of the first pair of inserts and on the top surface of the elastic clamping piece 18 of the second pair of inserts, so that the second limiting portion 15 and the elastic clamping piece 18 are in close contact after the first pair of inserts and the second pair of inserts are inserted, thereby achieving good sealing effect. In addition, the inner cavities of the first sleeve 10 of the first pair of inserts and the second sleeve 17 of the second pair of inserts are both filled with corrosion-resistant sealing material 19 to prevent air from entering. Finally, the two side flanges of the H-shaped steel 3 of the upper PEC column and the two side flanges of the H-shaped steel 3 of the lower PEC column are fully welded and fixed.

[0027] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A PEC column vertical connection joint, comprising an upper PEC column and a lower PEC column, characterized in that: The bottom surface of the upper PEC column is provided with a first pair of inserts and positioning columns, and the top surface of the lower PEC column is provided with a second pair of inserts and positioning holes; the bottom surface of the upper PEC column is butted against the top surface of the lower PEC column, the positioning columns are embedded into the positioning holes, and the first pair of inserts are inserted into the second pair of inserts; the flanges of the upper PEC column are welded and fixed with the flanges of the lower PEC column.

2. The PEC column vertical connection node according to claim 1, characterized in that: The upper PEC column and the lower PEC column each comprise an H-shaped steel and concrete located on both sides of the web of the H-shaped steel; each of the two sides of the web of the H-shaped steel is provided with longitudinal reinforcement and stirrups; the first pair of inserts are fixed on the longitudinal reinforcement of the upper PEC column, and the second pair of inserts are fixed on the longitudinal reinforcement of the lower PEC column.

3. The PEC column vertical connection node of claim 1, wherein: The positioning columns at the bottom of the upper PEC column and the positioning holes at the top of the lower PEC column correspond in number and position; the web of the H-shaped steel of the lower PEC column is provided with positioning holes on both sides of the web; the positioning holes on both sides of the web are staggered in position.

4. The PEC column vertical connection node according to claim 2, characterized in that: The first pair of inserts comprises a first sleeve and a plug; the upper and lower ends of the first sleeve are open; the first sleeve is embedded in the concrete of the upper PEC column; the longitudinal reinforcement of the upper PEC column penetrates into the first sleeve; the end of the longitudinal reinforcement of the upper PEC column is provided with a pier head; the lower part of the pier head is provided with the plug; one end of the plug is embedded into the first sleeve, and the other end of the plug extends out of the first sleeve; the second pair of inserts comprises a second sleeve and an elastic clamping piece; the upper and lower ends of the second sleeve are open; the second sleeve is embedded in the concrete of the lower PEC column; the longitudinal reinforcement of the lower PEC column penetrates into the second sleeve; the end of the longitudinal reinforcement of the lower PEC column is provided with a pier head; the upper part of the pier head is provided with the elastic clamping piece; the elastic clamping piece is fixed on the second sleeve; when the first pair of inserts are inserted into the second pair of inserts, the plug penetrates through the elastic clamping piece and is inserted into the second sleeve.

5. The PEC column vertical connection node according to claim 4, wherein: The diameter of the pier head is greater than the diameter of the longitudinal reinforcement; the outer wall of the first sleeve into which the longitudinal reinforcement of the upper PEC column extends is provided with a retractable rivet; the outer wall of the second sleeve into which the longitudinal reinforcement of the lower PEC column extends is provided with a retractable rivet.

6. The PEC column vertical connection node according to claim 4, characterized in that: The first sleeve and the second sleeve are filled with anticorrosive sealing material.

7. The PEC column vertical connection node according to claim 4, characterized in that: The plug is divided into a fixed part, a plug rod and a locking head from top to bottom; the width of the fixed part is greater than the width of the plug rod; the fixed part is embedded into the first sleeve; the plug rod and the locking head are located outside the first sleeve; the lower part of the fixed part extends outward horizontally to form a first limiting part; the connection between the fixed part and the plug rod forms a second limiting part; the connection between the plug rod and the locking head extends outward horizontally along the outer circumference to form a third limiting part; the bottom end of the first sleeve abuts against the first limiting part; after the first pair of inserts are inserted into the second pair of inserts, the second limiting part presses against the top end of the elastic clamping piece; the bottom end of the elastic clamping piece abuts against the third limiting part; the plug rod is inserted into the inside of the elastic clamping piece; the locking head penetrates out of the elastic clamping piece; the contact surface between the second limiting part and the elastic clamping piece is coated with epoxy resin.

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