Embedded connection system for thin-wall core tube

Abstract

The utility model discloses a thin-wall core tube pre-embedded connection system, which relates to the field of building construction, and adopts the technical scheme that the thin-wall core tube pre-embedded connection system comprises a connection anchoring mechanism pre-embedded in core tube concrete, and a shearing force transmission unit is arranged on the connection anchoring mechanism; the connection anchoring mechanism comprises a positioning steel plate and an anchoring steel plate which are arranged in parallel, the positioning steel plate and the anchoring steel plate are fixedly connected through a connection sleeve and an anchoring steel bar, the connection sleeve is fixed on the positioning steel plate, and the anchoring steel bar is fixed on the anchoring steel plate; the shearing force transmission unit comprises a reinforcing steel plate and an anti-shearing steel plate which are fixedly arranged on the positioning steel plate, the reinforcing steel plate is located between the positioning steel plate and the anchoring steel plate, and the anti-shearing steel plate is located on the side, away from the anchoring steel plate, of the positioning steel plate. The connecting sleeve positioning device has the advantages that the whole connecting sleeve positioning device is integrated and modularized, only the position, perpendicularity and flatness of a steel plate need to be adjusted, and the connecting sleeve positioning efficiency is improved; the length of the anchoring steel bar is reduced, the anchor bending phenomenon is avoided, and construction is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of building construction, especially a thin -walled core tube pre -buried interface system. BACKGROUND

[0002] In the field of super high-rise building, as the main bearing structure, the reliable connection of core tube and outer frame beam is the key to ensure the stability of the whole building. In traditional construction, core tube and outer frame beam are connected by steel bar reservation or post-planting technology. However, with the wide application of top mold system, the separation construction mode of core tube and outer frame puts forward higher requirements for pre-buried interface system, especially in the thin-walled core tube (wall thickness is usually less than 400mm) scene, the existing technology faces the following outstanding problems:

[0003] 1. The positioning accuracy of the interface sleeve is insufficient: the traditional interface sleeve is pre-buried in a dispersed manner, and the position and angle need to be adjusted one by one, which is easily affected by the formwork deformation or pouring vibration, resulting in a high deviation rate of 30%-40%. The mispositioning of the interface sleeve not only increases the difficulty of subsequent beam steel bar connection, but also may cause uneven stress of the structure, and even need to be partially removed and reworked, which seriously affects the construction efficiency.

[0004] 2. Anchor bar bending problem: the wall thickness of thin-walled core tube is limited, if straight anchor design is adopted, the anchoring length often cannot meet the specification requirements, forcing the construction party to adopt bent anchor form. The bent anchor bar needs to be bent on site, which not only increases the labor cost, but also causes stress concentration due to bending angle deviation, reducing the seismic performance of the node. In addition, the bent anchor bar occupies a large space, which is easy to conflict with the formwork support system, affecting the lifting of the formwork.

[0005] 3. Weak shear-resistant structure design: the existing interface system relies on the natural bonding shear of concrete and steel plate, and lacks targeted strengthening measures. Under horizontal load (such as wind load and earthquake action), the interface node is easy to shear slip, resulting in a decrease in the overall stiffness of the structure. Although some schemes add shear keys, they are mostly welded later, which has poor coordination with the pre-buried system, and the welding quality is restricted by the site conditions.

[0006] 4. Lack of finished product protection: after the interface sleeve is pre-buried, the cement paste is easy to seep into the sleeve during concrete pouring, blocking the threads, so that the beam steel bar cannot be screwed in later. The conventional protection measures (such as temporary plastic covers) are easy to fall off during vibration, and the protection reliability is low. INVENTION CONTENTS

[0007] In view of the above technical problems, the utility model provides a thin-walled core tube pre-buried interface system.

[0008] The technical scheme is that a shear transfer unit is arranged on a pre-buried interface anchoring mechanism in the core tube concrete.

[0009] The adapter anchoring mechanism comprises parallelly arranged positioning steel plates and anchoring steel plates, the positioning steel plates and the anchoring steel plates are fixedly connected through adapter sleeves and anchoring steel bars, the adapter sleeves are fixed on the positioning steel plates, and the anchoring steel bars are fixed on the anchoring steel plates.

[0010] The shear force transmission unit comprises reinforcing steel plates and shear-resistant steel plates fixedly arranged on the positioning steel plates, the reinforcing steel plates are located between the positioning steel plates and the anchoring steel plates, and the shear-resistant steel plates are located on the side of the positioning steel plates away from the anchoring steel plates.

[0011] Preferably, the positioning steel plates and the anchoring steel plates are all I-shaped, the adapter sleeves and the anchoring steel bars are all located on the horizontal parts of the positioning steel plates and the anchoring steel plates, and the reinforcing steel plates and the shear-resistant steel plates are all located on the vertical parts of the positioning steel plates.

[0012] Preferably, a plurality of through holes matched with the adapter sleeves are formed in the horizontal part of the positioning steel plate, the adapter sleeves are inserted into the through holes and are welded and fixed with the positioning steel plate.

[0013] One end of the adapter sleeve is flush with the side of the positioning steel plate away from the anchoring steel plate.

[0014] Preferably, the adapter sleeve is in a tubular structure, and an inner thread is arranged on the inner wall of the adapter sleeve.

[0015] One end of the anchoring steel bar is welded and fixed with the anchoring steel plate, and the other end is provided with an outer thread and is threadedly connected with the adapter sleeve.

[0016] Preferably, the number of the reinforcing steel plates is two, and the two reinforcing steel plates are arranged in an up-down mode, and a plurality of short steel bars are fixedly arranged on the plate body of each reinforcing steel plate.

[0017] Preferably, a plurality of pegs are welded on the plate body of the shear-resistant steel plate.

[0018] Preferably, a soft plug is arranged in the adapter sleeve, and an adhesive tape is pasted on the horizontal part of the positioning steel plate, and the adhesive tape is used for plugging the adapter sleeve.

[0019] The technical scheme provided by the embodiment of the utility model has the beneficial effects that:

[0020] 1. The whole is integrated and modularized, only the position, perpendicularity and flatness of the steel plate need to be adjusted, and the positioning efficiency of the adapter sleeve is improved.

[0021] 2. The length of the anchoring steel bar is reduced, the bending anchor phenomenon is avoided, and the construction is facilitated.

[0022] 3. The positioning steel plate and the anchoring steel plate are used to adjust the posture in cooperation with the formwork, the inner and outer formworks can unify the verticality and flatness of the inner and outer formworks by the parallel features of the two formworks of the node, the quality of the formwork correction is improved, and the installation quality of the connection system can be intuitively reflected by the process of the formwork correction.

[0023] 4. The connection sleeve is embedded in the core tube structure, the formwork system is not affected by the protrusions during the lifting process, and the safety hidden danger in the construction process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is a schematic view of the overall structure of the embodiment of the utility model.

[0025] Fig. 2 It is a front view of the overall structure of the embodiment of the utility model.

[0026] Fig. 3 It is a top view of the overall structure of the embodiment of the utility model.

[0027] Fig. 4 It is a sectional view of the overall structure of the embodiment of the utility model.

[0028] Among them, the reference signs are: 1, the positioning steel plate; 2, the anchoring steel plate; 3, the connection sleeve; 4, the anchoring steel bar; 5, the reinforcing steel plate; 6, the shear steel plate; 7, the short steel bar; 8, the bolt; 9, the soft plug. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail in combination with the drawings and embodiments. Of course, the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0030] It should be noted that the embodiments in the utility model creation and the features in the embodiments can be combined with each other without conflict.

[0031] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0032] In the description of the utility model, it needs to be understood that the terms "installation", "connection", "connection" should be understood in a broad sense, unless otherwise specified and limited, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0033] Embodiment 1

[0034] Referring to Figs. 1 to 4 The utility model provides a kind of thin-walled core tube pre-burying interface system, including the interface anchoring mechanism pre-buried in core tube concrete, shear force transmission unit is arranged on interface anchoring mechanism;

[0035] Interface anchoring mechanism includes the positioning steel sheet 1 and anchoring steel sheet 2 of parallel arrangement, and the anchoring steel sheet 2 is fixedly connected between positioning steel sheet 1 and anchoring steel sheet 2 by interface sleeve 3 and anchoring steel bar 4, interface sleeve 3 is fixed on positioning steel sheet 1, and anchoring steel bar 4 is fixed on anchoring steel sheet 2;

[0036] Interface anchoring mechanism makes full use of the ability of anchoring steel bar 4 to resist external force, the rigidity of steel bar and steel sheet welding, reduces the length of anchoring steel bar 4, avoids the connecting steel bar anchor bending of traditional beam;

[0037] Shear force transmission unit includes the reinforcing steel plate 5 and shear steel plate 6 of fixedly setting on positioning steel sheet 1, reinforcing steel plate 5 is located between positioning steel sheet 1 and anchoring steel sheet 2, and shear steel plate 6 is located on the side of positioning steel sheet 1 away from anchoring steel sheet 2.

[0038] The positioning steel plate 1 and the anchoring steel plate 2 are both I-shaped, the connecting sleeve 3 and the anchoring steel bar 4 are both located at the horizontal part of the positioning steel plate 1 and the anchoring steel plate 2, and the reinforcing steel plate 5 and the shear steel plate 6 are both located at the vertical part of the positioning steel plate 1.

[0039] The positioning steel plate 1 is designed as an I-shaped plate, as a non-force-bearing component, the web width of the I-shaped steel plate can meet the requirements of welding the shear steel plate 6 and not breaking, the upper and lower flange height can meet the requirements of installing the connecting sleeve 3, the contact area of the steel plate and the concrete is minimized, and the contact area of the new and old concretes is increased.

[0040] The positioning steel plate 1 and the anchoring steel plate 2 need to be arranged in parallel, the width between the two sides of the positioning steel plate 1 and the anchoring steel plate 2 away from each other is consistent with the thickness of the core tube wall, so that the core tube wall formwork can be combined, the core tube wall formwork and the connecting system can be effectively and closely combined, the perpendicularity and flatness of the inner and outer formworks can be better controlled, consistency can be maintained, and the position and angle of the connecting sleeve 3 can be better controlled.

[0041] A plurality of through holes matched with the connecting sleeve 3 are formed in the horizontal part of the positioning steel plate 1, the connecting sleeve 3 is inserted into the through hole and welded and fixed with the positioning steel plate 1;

[0042] One end of the connecting sleeve 3 is flush with the side of the positioning steel plate 1 away from the anchoring steel plate 2.

[0043] The connecting sleeve 3 is a tubular structure, and the inner wall is provided with internal threads;

[0044] One end of the anchoring steel bar 4 is welded and fixed with the anchoring steel plate 2, and the other end is provided with external threads and is threadedly connected with the connecting sleeve 3.

[0045] The number of the reinforcing steel plates 5 is two, and the two reinforcing steel plates 5 are arranged in an up-down manner, and a plurality of short steel bars 7 are fixedly arranged on the plate body of each reinforcing steel plate 5.

[0046] The cross-sectional range of the two reinforcing steel plates 5 should correspond to the cross-sectional range of the shear steel plate 6, and a reserved groove for the core tube internal structure to pass through is formed between the two reinforcing steel plates 5;

[0047] The purpose of the reinforcing steel plate 5 is to resist external force of the shear steel plate 6, and the short steel bars 7 are tack-welded to the reinforcing steel plate 5 to increase the bonding capacity between the steel plate and the core tube concrete.

[0048] A plurality of studs 8 are welded on the plate body of the shear steel plate 6.

[0049] The shear steel plate 6 and the reinforcing steel plate 5 need to be welded with the bolt 8 on the surface of the shear steel plate 6 for the reinforcing and combining ability with the reinforced concrete structure, the shear ability of the connecting position of the outer frame beam and the core tube wall is strengthened, the influence of the poor combination of the steel plate and the concrete is weakened, and the combining ability of the steel member and the reinforced concrete structure is strengthened.

[0050] The soft plug 9 is arranged in the connecting sleeve 3, and the horizontal part of the positioning steel plate 1 is pasted with adhesive tape.

[0051] The soft plug 9 and the adhesive tape are arranged for the purpose of protecting the thread in the connecting sleeve 3 and avoiding the flowing slurry and the coarse and fine aggregate from entering the connecting sleeve 3 and damaging the thread.

[0052] In the later construction process, the adhesive tape is torn off, the soft plug 9 is taken out, the internal thread of the connecting sleeve 3 is exposed, and the high-pressure air gun or the special hole cleaning tool is used to remove the residual concrete debris or impurities in the connecting sleeve 3;

[0053] The outer thread is processed at one end of the outer frame beam steel bar, the thread specification is matched with the internal thread of the connecting sleeve 3, the outer frame beam steel bar is rotated into the connecting sleeve 3, and the fixing of the outer frame beam and the core tube is realized.

[0054] In the use, the positioning steel plate 1 and the anchoring steel plate 2 are processed in a factory in a standardized mode, and the positioning steel plate 1 and the anchoring steel plate 2 are provided with through holes on surfaces thereof;

[0055] The connecting sleeve 3 is welded with the positioning steel plate 1 one by one according to the hole opening position, one end of the connecting sleeve 3 is flush with the outer surface of the positioning steel plate 1, and the other end is used for connecting the anchoring steel bar 4;

[0056] The reinforcing steel plate 5 is pasted with the short steel bar 7, then the reinforcing steel plate 5 is welded on the vertical part of the positioning steel plate 1 and on one side of the beam anchoring steel bar 4;

[0057] The beam anchoring steel bar 4 is processed, and the thread is sleeved on one end;

[0058] The anchoring steel bar 4 is butted with the anchoring steel plate 2 one by one and is plug welded, and after the plug welding is completed, the surface of the steel plate is polished;

[0059] The soft plug 9 is installed in the connecting sleeve 3 one by one, and after the installation is completed, the soft plug 9 is covered by pasting the adhesive tape on the horizontal part of the positioning steel plate 1;

[0060] The shear steel plate 6 is processed, and the bolt 8 is welded on the surface of the shear steel plate 6;

[0061] The combination of the positioning steel plate 1 and the anchoring steel plate 2 formed after welding is transported to a construction site, hoisted to a working surface by using equipment, installed, cooperated with a core tube formwork to complete positioning and fixing, and after pouring and demolding, the post-welding shear-resistant steel plate 6 is welded on the positioning steel plate 1 in a range corresponding to the arrangement of the reinforcing steel plate 5, and the post-welding shear-resistant steel plate 6 can avoid opening holes on the formwork, simplify the construction steps of the formwork, and improve the construction efficiency.

[0062] The above are only preferred embodiments of the present application and are not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thin walled core wall pre-embedded interface system, characterized in that, The utility model relates to a connecting anchor mechanism embedded in the core tube concrete, which is provided with a shear force transmission unit. The connecting anchor mechanism comprises parallelly arranged positioning steel plates (1) and anchor steel plates (2), and the positioning steel plates (1) and the anchor steel plates (2) are fixedly connected through connecting sleeves (3) and anchor steel bars (4). The shear force transmission unit comprises a reinforcing steel plate (5) and a shear-resistant steel plate (6) fixedly arranged on the positioning steel plate (1), the reinforcing steel plate (5) is located between the positioning steel plate (1) and the anchor steel plate (2), and the shear-resistant steel plate (6) is located on the side of the positioning steel plate (1) away from the anchor steel plate (2).

2. The thin walled core wall pre-embedded interface system of claim 1, wherein, The positioning steel plate (1) and the anchor steel plate (2) are both I-shaped, the connecting sleeve (3) and the anchor steel bar (4) are both located on the horizontal parts of the positioning steel plate (1) and the anchor steel plate (2), and the reinforcing steel plate (5) and the shear-resistant steel plate (6) are both located on the vertical part of the positioning steel plate (1).

3. The thin walled core wall pre-embedded interface system of claim 2, wherein, A plurality of through holes matched with the connecting sleeve (3) are formed in the horizontal part of the positioning steel plate (1), the connecting sleeve (3) is inserted into the through holes and is welded and fixed with the positioning steel plate (1). One end of the connecting sleeve (3) is flush with the side of the positioning steel plate (1) away from the anchor steel plate (2).

4. The thin walled core wall pre-embedded interface system of claim 3, wherein, The connecting sleeve (3) is in a tubular structure, and the inner wall is provided with internal threads. One end of the anchor steel bar (4) is welded and fixed with the anchor steel plate (2), and the other end is provided with external threads and is screwed with the connecting sleeve (3).

5. The thin walled core wall pre-embedded interface system of claim 1, wherein, The reinforcing steel plate (5) is provided with a plurality of short steel bars (7) on the plate body.

6. The thin walled core wall pre-embedded interface system of claim 5, wherein, A plurality of pegs (8) are welded on the plate body of the shear-resistant steel plate (6).

7. The thin walled core wall pre-embedded interface system of claim 1, wherein, A soft plug (9) is arranged in the connecting sleeve (3), and the horizontal part of the positioning steel plate (1) is pasted with adhesive tape, which is used for plugging the connecting sleeve (3).

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