Device for improving loading capacity of building pile foundation

Abstract

The utility model provides a device for improving the loading capacity of a building pile foundation. The device for detecting the loading capacity of the building pile foundation comprises a base plate arranged at the top end of the pile foundation needing to be detected; the jack is placed on the base plate, and a dial indicator is arranged on the jack; the two supporting piers are placed on the two sides of the pile foundation needing to be detected; the placing plate is placed on the two supporting piers; the stacking object is placed on the placing plate; the positioning ring is placed outside the pile foundation needing to be detected; and the measuring mechanism is arranged on the positioning ring. According to the device for detecting the pressure bearing capacity of the building pile foundation, the placement positions of the base plate and the jack can be measured, so that the placement accuracy of the positions of the base plate and the jack is improved, the detection accuracy of the pressure bearing capacity of the pile foundation is effectively improved, and the detection error is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation detection, in particular to a device for testing the pressure bearing capacity of a building pile foundation. Background Art

[0002] Pile foundation is a deep foundation consisting of a pile and a pile cap connected to the top of the pile (referred to as cap) (see figure) or a single pile foundation connected by a column and a pile foundation, referred to as pile foundation. If the pile body is completely buried in the soil and the bottom of the cap is in contact with the soil, it is called a low cap pile foundation; if the upper part of the pile body is exposed to the ground and the bottom of the cap is above the ground, it is called a high cap pile foundation. Building pile foundations are usually low cap pile foundations.

[0003] After the pile foundation is built, in order to ensure the safety of the entire superstructure, the bearing capacity of the pile foundation needs to be tested. The conventional bearing capacity test of the pile foundation is mostly carried out through static load. A pad is placed on the top of the pile foundation, and then a jack is placed on the pad, and then corresponding piled weights are placed to conduct corresponding bearing capacity tests on the pile foundation. However, in the process of placing the pad, the pad needs to be placed in the exact center of the pile foundation, and then the jack is placed in the center of the pad to ensure the accuracy of the pile foundation detection. In the common process of placing the pad and the jack, the staff often place them by feeling, which leads to inaccurate placement, which in turn leads to errors in the bearing capacity test of the pile foundation.

[0004] Therefore, it is necessary to provide a device for improving the bearing capacity of building pile foundations to solve the above technical problems. Utility Model Content

[0005] In order to solve the technical problem mentioned in the background technology that the pad and the jack cannot be accurately placed, which leads to large errors in the detection of the bearing capacity of the pile foundation, the utility model provides a device for the bearing capacity of the building pile foundation.

[0006] The device for testing the bearing capacity of a building pile foundation provided by the utility model comprises: a pad placed on the top of the pile foundation to be tested; a jack, the jack is placed on the pad and a dial indicator is arranged on the jack; two supporting piers, the two supporting piers are placed on both sides of the pile foundation to be tested; a placing plate, the placing plate is placed on the two supporting piers; a pile of weights, the pile of weights is placed on the placing plate; a positioning ring, the positioning ring is placed outside the pile foundation to be tested; and a measuring mechanism, the measuring mechanism is arranged on the positioning ring, and the measuring mechanism is used to measure the relative position of the pad and the pile foundation to be measured.

[0007] Preferably, the measuring mechanism includes a ring groove, a ring rod, a connecting block, a placement frame and a mounting plate, the ring groove is opened at the top of the positioning ring, the ring rod is fixedly installed in the ring groove, the connecting block is slidably arranged on the ring rod, the placement frame is arranged on the connecting block, and the mounting plate is arranged on the placement frame.

[0008] Preferably, the placement rack is provided with an adjustment mechanism for adjusting the use position of the mounting plate, the adjustment mechanism includes a screw rod and a mounting block, the screw rod is rotatably mounted on the placement rack via a damping shaft, the mounting block is threadedly sleeved on the screw rod, and the mounting block and the mounting plate are fixedly connected.

[0009] Preferably, a first ball is nested at the bottom of the connecting block, the first ball is in contact with the bottom of the annular groove, a second ball is nested on the mounting plate, a limit rod is fixedly installed on the placement frame, and the limit rod is slidably connected to the mounting block.

[0010] Preferably, a first telescopic rod is fixedly mounted on the connecting block, and an output shaft of the first telescopic rod is fixedly connected to the bottom of the placement rack.

[0011] Preferably, the positioning ring is provided with two positioning mechanisms for positioning the positioning ring, the positioning mechanism includes a mounting groove, a second telescopic rod and a support block, the mounting groove is opened on the positioning ring, the second telescopic rod is arranged in the mounting groove, and the support block is fixedly mounted on the output shaft of the second telescopic rod.

[0012] Preferably, the pad is circular, and a controller is provided on one side of the positioning ring.

[0013] Compared with the related art, the device for the bearing capacity of building pile foundation provided by the utility model has the following beneficial effects:

[0014] The utility model provides a device for measuring the pressure bearing capacity of a building pile foundation:

[0015] 1. Through the cooperation of pads, jacks, dial indicators, support piers, placement plates and piled weights, the pile foundation can be tested for its bearing capacity. The positioning ring and measuring mechanism can be used to detect the placement of pads and jacks, thereby improving the accuracy of the placement of pads and jacks, thereby effectively improving the accuracy of the pile foundation bearing capacity test and reducing the error of the test.

[0016] 2. The use position of the mounting plate can be adjusted through the adjustment mechanism, so as to better measure the placement position of the pad and the jack. The connecting block can be moved in the ring groove through the first ball bearing, and the mounting plate can be better rotated around the periphery of the pad and the jack through the second ball bearing. The mounting block can be limited by the limit rod, so that the screw rod can stably drive the mounting block to move. The positioning ring and the pile foundation can be conveniently positioned and connected through the positioning mechanism, so as to facilitate the placement of the positioning ring, and the controller can conveniently perform corresponding control operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the main cross-sectional structure of a preferred embodiment of the device for increasing the bearing capacity of a building pile foundation provided by the utility model;

[0018] Figure 2 for Figure 1 An enlarged structural diagram of part A shown in FIG.

[0019] Figure 3 It is a schematic diagram of the assembly of the positioning ring, the sliding groove and the ring rod in the utility model.

[0020] Numbers in the figure: 1, pad; 2, jack; 3, support pier; 4, placement plate; 5, pile of weights; 6, positioning ring; 7, ring groove; 8, ring rod; 9, connecting block; 901, first ball bearing; 10, placement frame; 11, mounting plate; 1101, second ball bearing; 12, screw rod; 13, mounting block; 14, first telescopic rod; 15, mounting groove; 16, second telescopic rod; 17, support block. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Please refer to Figure 1-Figure 3 ,in, Figure 1 A schematic diagram of the main cross-sectional structure of a preferred embodiment of the device for increasing the bearing capacity of a building pile foundation provided by the utility model; Figure 2 for Figure 1 An enlarged structural diagram of part A shown in FIG. Figure 3 It is a schematic diagram of the assembly of the positioning ring, the sliding groove and the ring rod in the utility model.

[0023] The device for measuring the bearing capacity of a building pile foundation comprises: a pad 1 placed on the top of the pile foundation to be tested; a jack 2, the jack 2 is placed on the pad 1, and a dial indicator is arranged on the jack 2; two supporting piers 3, the two supporting piers 3 are placed on both sides of the pile foundation to be tested; a placing plate 4, the placing plate 4 is placed on the two supporting piers 3; a pile of weights 5, the pile of weights 5 is placed on the placing plate 4; a positioning ring 6, the positioning ring 6 is placed on the outside of the pile foundation to be tested; a measuring mechanism, the measuring mechanism is arranged on the positioning ring 6, and the measuring mechanism is arranged on the positioning ring 6. On the ring 6, the measuring mechanism is used to measure the relative position of the pad 1 and the pile foundation to be measured. Through the cooperation of the pad 1, jack 2, dial indicator, support pier 3, placement plate 4 and pile weight 5, the pile foundation can form a bearing capacity detection system, thereby detecting the bearing capacity of the pile foundation. The mutual cooperation of the positioning ring 6 and the measuring mechanism can detect the placement position of the pad 1 and the jack 2, improve the accuracy of the placement of the pad 1 and the jack 2, thereby effectively improving the accuracy of the pile foundation bearing capacity detection and reducing the error of the detection.

[0024] The measuring mechanism includes an annular groove 7, an annular rod 8, a connecting block 9, a placement frame 10 and a mounting plate 11. The annular groove 7 is opened at the top of the positioning ring 6, the annular rod 8 is fixedly installed in the annular groove 7, the connecting block 9 is slidably set on the annular rod 8, the placement frame 10 is set on the connecting block 9, and the mounting plate 11 is set on the placement frame 10. The measuring mechanism can detect the placement position of the pad 1 and the jack 2, improve the accuracy of the placement of the pad 1 and the jack 2, thereby effectively improving the accuracy of the pile foundation bearing capacity detection and reducing the error of the detection.

[0025] The placement rack 10 is provided with an adjusting mechanism for adjusting the use position of the mounting plate 11, and the adjusting mechanism includes a screw rod 12 and a mounting block 13. The screw rod 12 is rotatably mounted on the placement rack 10 via a damping shaft, and the mounting block 13 is threadedly sleeved on the screw rod 12, and the mounting block 13 and the mounting plate 11 are fixedly connected. The use position of the mounting plate 11 can be adjusted by the adjusting mechanism, so as to better measure the placement position of the pad 1 and the jack 2.

[0026] A first ball 901 is nested at the bottom of the connecting block 9, and the first ball 901 is in contact with the bottom of the annular groove 7. A second ball 1101 is nested on the mounting plate 11. A limiting rod is fixedly installed on the placement frame 10, and the limiting rod is slidably connected to the mounting block 13. The connecting block 9 is moved in the annular groove 7 through the first ball 901, and the mounting plate 11 can be better rotated around the periphery of the pad 1 and the jack 2 through the second ball 1101. The mounting block 13 can be limited by the limiting rod, so that the screw rod 12 can stably drive the mounting block 13 to move.

[0027] A first telescopic rod 14 is fixedly mounted on the connecting block 9 , and an output shaft of the first telescopic rod 14 is fixedly connected to the bottom of the placement rack 10 , so that the height of the mounting plate 11 can be adjusted conveniently through the first telescopic rod 14 .

[0028] The positioning ring 6 is provided with two positioning mechanisms for positioning the positioning ring 6, and the positioning mechanisms include a mounting groove 15, a second telescopic rod 16 and a support block 17. The mounting groove 15 is provided on the positioning ring 6, and the second telescopic rod 16 is arranged in the mounting groove 15. The support block 17 is fixedly installed on the output shaft of the second telescopic rod 16. The positioning ring 6 and the pile foundation are conveniently positioned and connected through the positioning mechanism, thereby facilitating the placement of the positioning ring 6.

[0029] The pad 1 is circular in shape, and a controller is provided on one side of the positioning ring 6, which facilitates corresponding control operations.

[0030] It is worth noting that the circuits, electronic components and modules involved in the present utility model are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present utility model does not involve improvements to software and methods.

[0031] The working principle of the device for the bearing capacity of building pile foundation provided by the utility model is as follows:

[0032] When in use, the staff places the positioning ring 6 on the periphery of the pile foundation, and then starts the two second telescopic rods 16 through the controller to drive the two supporting blocks 17 to move the same distance. When the two supporting blocks 17 support the two sides of the pile foundation respectively, the positioning ring 6 is placed at this time. Since the pile foundation is arranged in a circular shape, the displacement distances of the two second telescopic rods 16 are the same. Then, the positioning ring 6 and the pile foundation are at the same center of a circle. The staff places the pad 1 on the top of the pile foundation to be inspected, and then the controller starts the first telescopic rod 14 to drive the mounting plate 11 on the placement frame 10 to move to one side of the pad 1, and then rotates the screw rod 12. Under the limiting action of the limiting rod on the mounting block 13, the screw rod 12 drives the mounting block 13 to move, thereby driving the mounting plate 11 to move so that the second ball 1101 is connected to the outer wall of the pad 1, and then the staff rotates the connecting block 9 to move along the ring rod 8. When the second ball 1101 is always in contact with the periphery of the pad 1, it means that the pad 1 is accurately placed. And the concentric position of the pile foundation, on the contrary, it is necessary to adjust the position of the pad 1, and then place the jack 2 on the pad 1 through the corresponding equipment. Similarly, the placement position of the jack 2 is detected according to the above steps, so that the placement positions of the pad 1 and the jack 2 can be effectively and accurately placed, thereby effectively improving the accuracy of the pile foundation bearing capacity detection and reducing the detection error. Then the supporting pier 3, the placement plate 4 and the pile weight 5 are placed in sequence. During the detection process, the pile top applies load to the upper and lower pile bodies of the pile foundation through the pile weight 5. The upper pile body will be lifted upward due to the pressure. At this time, friction resistance will be generated on the pile side. The lower pile body will also slowly sink due to the pressure, and generate pile side resistance and pile end resistance. In this way, the pile foundation will reach a balanced loading due to its own reaction force, and then judge its stability and bearing capacity. Under the mutual action of the jack 2, the dial indicator and the controller, the displacement of the pile foundation is measured, thereby detecting the bearing capacity of the pile foundation.

[0033] Compared with the related art, the device for the bearing capacity of building pile foundation provided by the utility model has the following beneficial effects:

[0034] The utility model provides a device for testing the bearing capacity of a building pile foundation. The bearing capacity of the pile foundation can be tested by the mutual cooperation of a pad 1, a jack 2, a dial indicator, a support pier 3, a placement plate 4 and a pile weight 5. The bearing capacity of the pile foundation can be tested by the mutual cooperation of a positioning ring 6 and a measuring mechanism. The placement positions of the pad 1 and the jack 2 can be tested, and the placement accuracy of the pad 1 and the jack 2 can be improved, thereby effectively improving the accuracy of the pile foundation bearing capacity test and reducing the error of the test.

[0035] The use position of the mounting plate 11 can be adjusted through the adjustment mechanism, so as to better measure the placement position of the pad 1 and the jack 2. The connecting block 9 is moved in the annular groove 7 through the first ball 901, and the mounting plate 11 can be better rotated around the periphery of the pad 1 and the jack 2 through the second ball 1101. The mounting block 13 can be limited by the limit rod, so that the screw rod 12 can stably drive the mounting block 13 to move. The use height of the mounting plate 11 can be conveniently adjusted through the first telescopic rod 14, and the positioning ring 6 and the pile foundation can be conveniently positioned and connected through the positioning mechanism, so as to facilitate the placement of the position of the positioning ring 6, and the controller can conveniently perform corresponding control operations.

[0036] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. However, on the premise that technical personnel in this field understand the principle of the above-mentioned utility model, they can clearly know the details of its power mechanism, power supply system and control system.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for measuring the bearing capacity of a building pile foundation, characterized in that: include: A pad placed on top of the pile foundation to be inspected; A jack, the jack is placed on the pad and a dial indicator is provided on the jack; Two supporting piers, the two supporting piers are placed on both sides of the pile foundation to be tested; A placement plate, the placement plate is placed on the two support piers; A pile of heavy objects, wherein the pile of heavy objects is placed on the placement board; A positioning ring, which is placed outside the pile foundation to be inspected; A measuring mechanism is arranged on the positioning ring, and is used to measure the relative position of the pad and the pile foundation to be measured.

2. The device for measuring the bearing capacity of building pile foundation according to claim 1, characterized in that: The measuring mechanism includes a ring groove, a ring rod, a connecting block, a placement frame and a mounting plate, the ring groove is opened at the top of the positioning ring, the ring rod is fixedly installed in the ring groove, the connecting block is slidably arranged on the ring rod, the placement frame is arranged on the connecting block, and the mounting plate is arranged on the placement frame.

3. The device for measuring the bearing capacity of building pile foundation according to claim 2, characterized in that: The placement rack is provided with an adjustment mechanism for adjusting the use position of the mounting plate, the adjustment mechanism includes a screw rod and a mounting block, the screw rod is rotatably mounted on the placement rack via a damping shaft, the mounting block is threadedly sleeved on the screw rod, and the mounting block and the mounting plate are fixedly connected.

4. The device for measuring the bearing capacity of building pile foundation according to claim 3, characterized in that: A first ball is nested at the bottom of the connecting block, the first ball is in contact with the bottom of the annular groove, a second ball is nested on the mounting plate, a limiting rod is fixedly installed on the placement frame, and the limiting rod is slidably connected to the mounting block.

5. The device for measuring the bearing capacity of building pile foundation according to claim 2, characterized in that: A first telescopic rod is fixedly mounted on the connecting block, and an output shaft of the first telescopic rod is fixedly connected to the bottom of the placement rack.

6. The device for measuring the bearing capacity of building pile foundation according to claim 1, characterized in that: The positioning ring is provided with two positioning mechanisms for positioning the positioning ring, and the positioning mechanism includes a mounting groove, a second telescopic rod and a support block. The mounting groove is provided on the positioning ring, the second telescopic rod is provided in the mounting groove, and the support block is fixedly installed on the output shaft of the second telescopic rod.

7. The device for measuring the bearing capacity of building pile foundation according to claim 1, characterized in that: The pad is arranged in a circular shape, and a controller is arranged on one side of the positioning ring.

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