Connecting structure of device suitable for vertical uplift static load test and prestressed pipe pile

Abstract

The utility model relates to the technical field of prestressed pipe piles, and discloses a connecting structure of a device suitable for a vertical anti-pulling static load test and a prestressed pipe pile, the connecting structure comprises an annular hoop and two high-strength pull rods, the annular hoop is sleeved on the periphery of the prestressed pipe pile, the two high-strength pull rods are used for conducting and lifting loads, and the annular hoop and the prestressed pipe pile are relatively fixed; attached lugs are arranged on the two sides of the annular hoop in a protruding mode respectively, and the two high-strength pull rods are arranged on the two sides of the annular hoop respectively; the lower ends of the high-strength pull rods are connected with the attached lugs, and the upper ends extend upwards; the annular hoop arranged on the periphery of the prestressed pipe pile in a sleeving mode is arranged, the annular hoop and the prestressed pipe pile are relatively fixed, then the high-strength pull rod is connected with the attached lugs on the annular hoop, lifting loads can be conducted to the prestressed pipe pile through the high-strength pull rod and the annular hoop, the structure is simple, and arrangement is convenient.

Description

Technical Field

[0001] The utility model patent relates to the technical field of prestressed pipe piles, and more specifically, to a connection structure between a device applicable to vertical uplift static load test and a prestressed pipe pile. Background Art

[0002] After the prestressed pipe pile is fabricated, an uplift static load test needs to be carried out to detect the vertical uplift bearing capacity of the prestressed pipe pile, and through the internal force and deformation test of the prestressed pipe pile, the uplift skin friction of the pile is determined.

[0003] In the prior art, the uplift static load test of prestressed pipe piles adopts the method of welding and extending the core filling steel bars for reaction force conduction. Before the test, it is necessary to reinforce and fill the core of its hollow part on site. After reaching the age, the core filling steel bars are welded and extended to be fixed in the test reaction force bearing steel plate, and then the jack applies the jacking load to the reaction force bearing steel plate. It is necessary to wait for the age of the core filling concrete, so the on-site preparation time is long and the operation is troublesome. Moreover, during the welding process of the extended steel bars, there are certain safety hazards. At the same time, manual labor is required and a certain amount of steel bars and welding rods are consumed. If the welding operation is improper, the force on the welding joint is uneven or the welding joint is detached during the test, resulting in difficulty in carrying out the uplift static load test. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a connection structure between a device applicable to vertical uplift static load test and a prestressed pipe pile, aiming to solve the problems of waiting for the concrete age and troublesome operation in the uplift static load test of prestressed pipe piles in the prior art.

[0005] The present utility model is realized as follows. The connection structure between a device applicable to vertical uplift static load test and a prestressed pipe pile includes an annular hoop sleeved on the outer periphery of the prestressed pipe pile and two high-strength tie rods for conducting and lifting the load. The annular hoop is relatively fixed to the prestressed pipe pile. Lugs are respectively convexly provided on both sides of the annular hoop, and the two high-strength tie rods are respectively arranged on both sides of the annular hoop. The lower end of the high-strength tie rod is connected to the lug, and the upper end of the high-strength tie rod extends upward.

[0006] Further, the high-strength tie rod is longitudinally arranged.

[0007] Further, the lower end of the high-strength tie rod passes through the lug and is connected to the lug.

[0008] Further, the lower end of the high-strength tie rod has a thread, and after passing through a backing plate, it is connected with a high-strength nut. The backing plate and the high-strength nut relatively fix the high-strength tie rod and the lug.

[0009] Further, the lug includes a bottom plate arranged horizontally, and the bottom plate is butted against the outer side wall of the annular hoop. There is an opening groove in the middle of the outer side (the length of the opening groove is slightly longer than the center of the bottom plate, and the width is slightly larger than the diameter of the high-strength tie rod for the high-strength tie rod to be placed). The lower end of the high-strength tie rod is placed in the opening groove of the bottom plate, and the backing plate and the high-strength nut abut against the bottom plate from bottom to top.

[0010] Further, the lug includes two side plates arranged at intervals, and an interval space is formed between the two side plates; there are openings in the upper outer sides of the two side plates for hoisting the main body of the device. After hoisting, steel bars can be inserted to prevent the force transmission member from slipping off; the two side plates are respectively butted against the outer side wall of the annular hoop, and the bottoms of the two side plates are respectively butted against the upper parts on both sides of the bottom plate. By arranging the side plates, the two ends of the bottom plate can be reinforced.

[0011] Further, two reinforcing plates are arranged in the interval space, and the two reinforcing plates are arranged at intervals. The reinforcing plates are butted against the outer side wall of the annular hoop, and the bottom of the reinforcing plate is butted against the upper parts on both sides of the opening groove of the bottom plate. By arranging the reinforcing plates, the middle part of the bottom plate can be reinforced.

[0012] Further, the lug includes two anti-slip plates arranged at intervals, which are arranged below both sides of the opening groove of the bottom plate, and the upper ends are butted against the lower outer side of the bottom plate. By arranging the anti-slip plates, during the process of transmitting the tensile force, the backing plate at the lower part of the high-strength tie rod can be prevented from sliding outwards, thus causing the high-strength tie rod to fall off.

[0013] Compared with the prior art, the connection structure between the device applicable to the vertical uplift static load test and the prestressed pipe pile provided by the utility model arranges an annular hoop sleeved on the outer periphery of the prestressed pipe pile, and the annular hoop is relatively fixed to the prestressed pipe pile. Then, by using high-strength tie rods to connect with the lugs on the annular hoop, the lifting load can be transmitted to the prestressed pipe pile through the high-strength tie rods. The structure is simple and the arrangement is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view schematic diagram of the connection structure between the device applicable to the vertical uplift static load test and the prestressed pipe pile provided by the utility model;

[0015] Figure 2 is the front view schematic diagram of the connection between the high-strength tie rod and the lug provided by the utility model. DETAILED DESCRIPTION OF THE INVENTION

[0016] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0017] The implementation of the present utility model will be described in detail below in conjunction with specific embodiments.

[0018] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model 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. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0019] Refer to Figure 1-2 As shown, it is a preferred embodiment provided by the present utility model.

[0020] A connection structure between a device applicable to vertical uplift static load test and a prestressed pipe pile, comprising an annular hoop 20 sleeved on the outer periphery of the prestressed pipe pile 30 and two high-strength tie rods 10 for transmitting and lifting loads; the annular hoop 20 is relatively fixed to the prestressed pipe pile 30; two lugs 21 are respectively convexly provided on both sides of the annular hoop 20; the two high-strength tie rods 10 are respectively arranged on both sides of the annular hoop 20; the lower end of the high-strength tie rod 10 is connected to the lug 21, and the upper end of the high-strength tie rod 10 extends upward.

[0021] In actual application, when the prestressed pipe pile 30 needs to be subjected to an uplift static load test, the upper end of the high-strength tie rod 10 is connected and transmitted to the detection device through other structures, etc., for example, it can be a jack, etc. Then, the lifting load is transmitted to the prestressed pipe pile 30 through the high-strength tie rod 10 and the annular hoop 20.

[0022] The above-provided connection structure between the device applicable to vertical uplift static load test and the prestressed pipe pile is arranged with an annular hoop 20 sleeved on the outer periphery of the prestressed pipe pile, and the annular hoop 20 is relatively fixed to the prestressed pipe pile 30. Then, the high-strength tie rod 10 is connected to the lug 21 of the annular hoop to transmit the lifting load to the prestressed pipe pile. The structure is simple and convenient to arrange.

[0023] The relative fixation between the annular hoop 20 and the prestressed pipe pile 30 can adopt various structures. It can be fixed by inserting a wedge block, or other structures can be used for fixation.

[0024] The high-strength tie rod 10 is longitudinally arranged. In this way, during the conduction of the lifting load, longitudinal conduction can be achieved.

[0025] The lower end of the high-strength tie rod 10 has a thread. After passing through the backing plate, a high-strength nut is sleeved. The backing plate and the high-strength nut abut against the attachment ear 21 from bottom to top, and the backing plate and the high-strength nut relatively fix the high-strength tie rod and the attachment ear.

[0026] The attachment ear 21 includes a bottom plate 211 arranged horizontally. The bottom plate 211 is butted against the outer side wall of the annular hoop 20. There is an opening groove in the middle of the outer side (the length of the opening groove is slightly longer than the center of the bottom plate, and the width is slightly larger than the diameter of the high-strength tie rod for the high-strength tie rod to be placed). The lower end of the high-strength tie rod 10 is placed in the opening groove of the bottom plate 211, and the backing plate 11 and the high-strength nut 12 abut against the bottom plate 211 from bottom to top.

[0027] The attachment ear 21 includes two side plates 212 arranged at intervals. An interval space is formed between the two side plates 212; there are openings 215 on the outer sides of the upper parts of the two side plates 212 for the hoisting device main body. After hoisting, steel bars can be inserted to prevent the force transmission member from slipping off; the two side plates 212 are respectively butted against the outer side wall of the annular hoop 20, and the bottoms of the two side plates 212 are respectively butted against the upper parts on both sides of the bottom plate 211. By providing the side plates 212, the two ends of the bottom plate 211 can be reinforced.

[0028] Two reinforcing plates 213 are arranged in the interval space. The two reinforcing plates 213 are arranged at intervals. The reinforcing plates 213 are butted against the outer side wall of the annular hoop 20, and the bottoms of the reinforcing plates 213 are butted against the upper parts on both sides of the opening groove of the bottom plate 211. By providing the reinforcing plates 213, the middle part of the bottom plate 211 can be reinforced.

[0029] The attachment ear 21 includes two anti-slip plates 214 arranged at intervals, which are arranged below both sides of the opening groove of the bottom plate 211, and the upper ends thereof are butted against the lower part of the outer side of the bottom plate 211. By providing the anti-slip plates 214, during the process of conducting the tensile force, the backing plate 11 at the lower part of the high-strength tie rod 10 can be prevented from sliding outwards, thus causing the high-strength tie rod 10 to fall off.

[0030] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A connection structure between a device for vertical static pullout test and a prestressed pipe pile, characterized in that: It comprises an annular hoop sleeved on the outer periphery of the prestressed pipe pile and two high-strength tie rods for transmitting lifting loads, the annular hoop is relatively fixed to the prestressed pipe pile; the two sides of the annular hoop are respectively provided with attached ears, and the two high-strength tie rods are respectively arranged on the two sides of the annular hoop; the lower end of the high-strength tie rod is connected to the attached ear, and the upper end of the high-strength tie rod is extended upward; The lower end of the high-strength tie rod has a thread, which passes through the backing plate and is sleeved with a high-strength nut. The backing plate and the high-strength nut fix the high-strength tie rod and the attachment ear relatively; The attachment ear comprises a bottom plate arranged horizontally, the bottom plate is butted against the outer side wall of the annular hoop, an open groove is provided in the middle of the bottom plate, the lower end of the high-strength tie rod is placed in the open groove of the bottom plate, and the pad and the high-strength nut abut against the bottom plate from bottom to top; The attached ear includes two side plates arranged at intervals, and a spacing space is formed between the two side plates; the upper parts of the two side plates are provided with openings on the outer sides for lifting the main body of the device, and steel bars can be inserted after the lifting is completed to prevent the force transmission component from slipping; the two side plates are respectively connected to the outer side walls of the annular hoop, and the bottoms of the two side plates are respectively connected to the upper parts of both sides of the bottom plate.

2. The connection structure between the device for vertical pull-out static load test and the prestressed pipe pile according to claim 1, characterized in that: The high-strength tie rods are arranged longitudinally.

3. The connection structure between the device for vertical pull-out static load test and the prestressed pipe pile according to claim 1, characterized in that: The lower end of the high-strength pull rod is clamped into the attachment ear and connected with the attachment ear.

4. The connection structure between the device for vertical pull-out static load test and the prestressed pipe pile according to any one of claims 1 to 3, characterized in that: Two reinforcing plates are provided in the spacing space, and are spaced apart from each other. The reinforcing plates are butt-jointed to the outer side walls of the annular hoop, and the bottoms of the reinforcing plates are butt-jointed to the upper parts of both sides of the opening groove of the bottom plate.

5. The connection structure between the device for vertical pull-out static load test and the prestressed pipe pile according to any one of claims 1 to 3, characterized in that: The attachment ear comprises two anti-slip plates which are arranged at intervals and are arranged below the two sides of the opening groove of the bottom plate, and the upper ends thereof are butted against the lower outer part of the bottom plate.

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