CN212270988U

CN212270988U - Rigid connection structure of tubular pile and bearing platform

Info

Publication number: CN212270988U
Application number: CN202021042531.4U
Authority: CN
Inventors: 吴江斌; 王卫东; 罗岚; 戴斌
Original assignee: East China Architectural Design and Research Institute Co Ltd
Current assignee: East China Architectural Design and Research Institute Co Ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-01-01
Anticipated expiration: 2030-06-09

Abstract

The utility model belongs to a tubular pile and cushion cap rigid connection structure in building engineering pile foundation field. The technical scheme is as follows: the pile top of the tubular pile extends into the lower part of the upper longitudinal steel bar of the bearing platform, a supporting plate is placed in the tubular pile, core concrete is poured in the space in the pipe above the supporting plate, a conical ring cylinder is sleeved outside the extending section of the tubular pile extending into the bearing platform, and the conical ring cylinder comprises a ring cylinder body, a ring cylinder chassis and a rib plate; the annular cylinder chassis is annular and is positioned at the bottom of the annular cylinder body; the inner diameter of the ring barrel chassis is the same as the inner diameter of the ring barrel body; the rib plate is a triangular steel plate, and two sides of the rib plate are respectively welded and fixed with the annular cylinder body and the annular cylinder chassis; the plurality of rib plates are arranged on the circumferential direction of the annular cylinder body at intervals; the bottom longitudinal steel bar of the bearing platform is welded and fixed with the ring barrel chassis; the upper part of the annular cylinder body is welded and fixed with a pile top end plate of the tubular pile. The rigid connection structure is simple in principle, reliable in quality, convenient for factory prefabrication and capable of realizing fixed connection and constraint between the pile top and the bearing platform.

Description

Rigid connection structure of tubular pile and bearing platform

Technical Field

The utility model belongs to the building engineering pile foundation field especially relates to a tubular pile and connection structure of cushion cap, can be by the pile foundation that wide application in the building bore horizontal load and adopt.

Background

With the rapid development of civil engineering field in China, the condition that the pile foundation is subjected to horizontal load is more and more emphasized by engineering technicians in the engineering construction of high-rise buildings, ports and wharfs, earthquake resistance and the like in cities. The tubular pile is widely applied to the foundation engineering due to the advantages of high single-pile bearing capacity, high construction speed, reliable quality and the like. In the pile foundation specification, the pile top node constraint condition is considered in the calculation of the horizontal bearing capacity and displacement of the pile foundation, so that the maximum bending moment coefficient and the horizontal displacement coefficient of the pile top are determined, and the characteristic value of the horizontal bearing capacity of a single pile is calculated. Generally speaking, the pile top node constraint condition is between the two states of articulation and solid joint. The current commonly used connection mode is that the pile top stretches into 5-10 cm of cushion cap, places layer board and dowel bar and pours the core concrete into the tubular pile, and the layer board is established to the internal parallel of tubular pile promptly, pours into the concrete in the upper portion of layer board, and dowel bar partly is in the concrete of tubular pile, and another part stretches into in the cushion cap concrete. However, due to the complexity of the site operation and the variability of the operating levels, the actual constraint situation is difficult to guarantee and is usually calculated in the articulated situation. Because the value of the horizontal displacement coefficient of the pile top is greatly different (2.441 and 0.940 respectively) when the pile top is fixedly connected and hinged in the specification, the problems of over-conservative design, resource waste and the like are easily caused. Therefore, the research and development of the rigid connection structure of the tubular pile and the bearing platform, which has the advantages of simple principle, reliable quality and convenient use, has very strong practical significance.

SUMMERY OF THE UTILITY MODEL

The utility model provides an overcome above-mentioned current problem, provide a tubular pile and cushion cap rigid connection structure, it is that the principle is simple, the quality is reliable, make things convenient for the mill to prefabricate, can realize the rigid connection structure of rigid coupling restraint between pile bolck and the cushion cap.

The technical scheme of the utility model is that: the utility model provides a tubular pile and cushion cap rigid connection structure, the pile bolck of tubular pile upwards stretches into the lower part of the vertical reinforcing bar in upper portion of cushion cap, and the section is stretched into for stretching into to the part of tubular pile in the cushion cap, stretches into section infill core concrete, its characterized in that: the annular cylinder is sleeved outside the wall of the extending section and fixed, and comprises an annular cylinder body, an annular cylinder chassis and a ribbed plate; the ring barrel base plate is annular and forms an L-shaped section together with the ring barrel body; the plurality of rib plates are arranged on the circumferential direction of the annular cylinder body at intervals; two sides of the rib plate are respectively welded and fixed with the annular cylinder body and the annular cylinder chassis; and the bottom longitudinal steel bar of the bearing platform is in lap joint with the annular cylinder chassis and is welded and fixed.

Based on the technical characteristics: the top elevation of the ring cylinder is flush with the top end of the tubular pile, and the upper part of the cylinder body of the ring cylinder is welded and fixed with the pile top end plate of the tubular pile.

Based on the technical characteristics: and inserting ribs are arranged in the core filling concrete and anchored into the bearing platform.

Based on the technical characteristics: the rib plates are triangular steel plates.

Based on the technical characteristics: the height of the cylinder body of the ring cylinder is the outer diameter of the tubular pile.

Based on the technical characteristics: the width of the ring barrel chassis is the outer diameter of the tubular pile.

The utility model discloses a connection structure is a ring section of thick bamboo of setting in the cushion cap, and a ring section of thick bamboo comprises the ring section of thick bamboo stack shell of fixed and restriction tubular pile lateral displacement, the ring section of thick bamboo chassis of restriction tubular pile longitudinal displacement, the floor of restriction tubular pile corner. The top elevation of the annular cylinder body can be flush with the top surface of the tubular pile, so that the upper part of the annular cylinder body and the top end plate of the tubular pile can be conveniently welded and fixed; the ring barrel chassis is welded and fixed with the longitudinal steel bar at the bottom in the bearing platform, and core concrete is filled in the tubular pile; concrete is poured together with the pile body of the extension section of the bearing platform steel bar, the ring cylinder and the tubular pile to form rigid connection. As optimization, the steel bars in the core filling concrete can be anchored into the bearing platform to further reinforce the rigid connection. The utility model discloses a have a ring section of thick bamboo of floor, be connected tubular pile and cushion cap as an organic whole. The structure can effectively limit the displacement and the corner which are possibly generated by the tubular pile, meets the requirement of rigid connection between the tubular pile and the bearing platform, plays a role in integral stability, and can effectively avoid the problem of insecurity or uneconomic performance caused by the fact that the constraint condition of the pile top and the coefficient value are difficult to determine.

The utility model has the advantages that: compared with the prior art, the utility model discloses effectively limited displacement and the corner that the tubular pile probably produced, realized tubular pile and cushion cap rigid connection's effect, played the purpose of stabilizing overall structure. The utility model discloses the principle is simple, construction convenience, the atress condition is reasonable, can press pile bolck node rigid coupling restraint condition to consider in the design calculation process.

Drawings

Fig. 1 is a schematic side view of the rigid connection structure of the tubular pile and the bearing platform of the present invention.

Fig. 2 is a schematic top view of the rigid connection structure between the tubular pile and the bearing platform of the present invention.

The reference numbers in the figures denote: a ring cylinder body 1; a ring barrel chassis 2; a rib plate 3; a dowel bar 4; 5, tubular piles; a support plate 6; bottom longitudinal rebars 7; upper longitudinal rebars 8; a bearing platform 9.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings. These embodiments are provided only for illustrating the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be mechanically connected, directly connected, indirectly connected through an intermediate medium, and communicated with each other. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1 and 2, the pile top of the tubular pile 5 extends into the lower part of the upper longitudinal steel bar 8 of the bearing platform 9, and the upper longitudinal steel bar 8 of the bearing platform 9 can be arranged through the pile top. The part of the tubular pile 5 in the bearing platform 9 is an extending section. Placing a supporting plate 6 in the tubular pile 5, pouring core filling concrete in the extending section through the supporting plate 6, sleeving a ring cylinder outside the extending section of the tubular pile 5 and fixing the ring cylinder, wherein the ring cylinder comprises a ring cylinder body 1, a ring cylinder chassis 2 and a rib plate 3; the annular cylinder chassis 2 is annular and is positioned at the bottom of the annular cylinder body 1, and forms an L-shaped section together with the annular cylinder body 1; the rib plate 3 is a triangular steel plate, and two sides of the rib plate 3 are respectively welded and fixed with the annular cylinder body 1 and the annular cylinder chassis 2; the plurality of rib plates 3 are arranged on the circumferential direction of the ring barrel body 1 at intervals, and the rib plates are generally uniformly distributed, so that the rigidity of the ring barrel is increased. The top elevation of the ring cylinder can be the same as the top elevation of the tubular pile 5 or lower than the top elevation of the tubular pile 5, and only the rigidity requirement needs to be met. If the top elevation of the ring cylinder can be the same as that of the tubular pile 5, the upper part of the ring cylinder body 1 is welded and fixed with the pile top end plate of the tubular pile 5, and construction is convenient. The shape of the rib 3 is not limited, and is preferably triangular as shown in fig. 1. And the bottom longitudinal steel bar 7 of the bearing platform 9 is welded and fixed with the annular cylinder chassis 2.

The pile top end plate belongs to a part of a tubular pile and is a conventional component; place the layer board and pour the core concrete of packing into in the tubular pile belongs to prior art the utility model discloses in can implement according to current technique. The joint bar 4 conduct the utility model discloses the optimization of technique, in the core concrete that fills of tubular pile was gone into to some anchor, in the concrete of another part anchor income cushion cap 9, strengthened tubular pile and the rigid coupling of cushion cap.

The ring barrel body 1, the ring barrel chassis 2 and the ribbed plates 3 can be welded into an integral ring barrel when being prefabricated in a factory.

As optimization, the height of the annular cylinder body 1 is equal to the outer diameter of the tubular pile; the width of the ring barrel chassis 2 is the same as the outer diameter of the pipe pile. The annular cylinder body 1 is preferably welded and fixed in the range of the pile top of the tubular pile with one time of the pile diameter, and the width of the annular cylinder chassis 2 is preferably as wide as one time of the pile diameter.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a tubular pile and cushion cap rigid connection structure, the pile bolck of tubular pile (5) upwards stretches into the lower part of the vertical reinforcing bar in upper portion (8) of cushion cap (9), tubular pile (5) are in part in cushion cap (9) is for stretching into the section, stretch into section intussuseption core concrete, its characterized in that: the annular cylinder is sleeved outside the wall of the extending section and fixed, and comprises an annular cylinder body (1), an annular cylinder chassis (2) and a rib plate (3); the ring barrel chassis (2) is annular and forms an L-shaped section together with the ring barrel body (1); the plurality of rib plates (3) are arranged at intervals in the circumferential direction of the annular cylinder body (1); two sides of the rib plate (3) are respectively welded and fixed with the annular cylinder body (1) and the annular cylinder chassis (2); and the bottom longitudinal steel bar (7) of the bearing platform (9) is in lap joint with the annular cylinder chassis (2) and is welded and fixed.

2. The rigid connection structure of a tubular pile and a bearing platform according to claim 1, characterized in that: the top elevation of a ring section of thick bamboo with the top of tubular pile (5) flushes, the upper portion of a ring section of thick bamboo stack body (1) with the pile bolck end plate welded fastening of tubular pile (5).

3. The rigid connection structure of a tubular pile and a bearing platform according to claim 1, characterized in that: and the core filling concrete is internally provided with a dowel bar (4) and anchored into the bearing platform (9).

4. The rigid connection structure of a tubular pile and a bearing platform according to claim 1, characterized in that: the rib plates (3) are triangular steel plates.

5. The rigid connection structure of a tubular pile and a bearing platform according to claim 1, characterized in that: the height of the ring cylinder body (1) is the outer diameter of the tubular pile (5).

6. The rigid connection structure of a tubular pile and a bearing platform according to claim 1 or 5, characterized in that: the width of the ring barrel chassis (2) is the outer diameter of the tubular pile (5).