Building foundation pile static load detection device

Abstract

The utility model discloses a building foundation pile static load detection device which comprises a jack, a main beam, N anchor piles and a secondary beam, the jack is fixedly arranged at the top of a foundation pile to be detected, the main beam is arranged at the top of the output end of the jack, the N anchor piles are arranged on the two sides of the main beam at intervals respectively, and the secondary beam is arranged between the anchor piles. Annular mounting plates are rotationally arranged at the tops of the anchor piles, the N secondary beams are arranged at the top of the main beam at intervals, the length direction of the secondary beams intersects with the length direction of the main beam, the ends of the secondary beams are located above the corresponding anchor piles correspondingly, pull rods are arranged on the portions, on the two sides of the secondary beams, of the mounting plates correspondingly, and the pull rods are connected with the secondary beams. The end of each secondary beam is provided with a locking mechanism connected with the corresponding pull rod. Through the arrangement, the mounting plate capable of rotating relative to the anchor pile is arranged at the top of the anchor pile, the pull rod does not need to be anchored in advance, the placement position of the secondary beam does not need to be lofted in advance, and the requirement for construction precision is lowered.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of foundation pile detection, and specifically relates to a building foundation pile static load detection device. BACKGROUND

[0002] The foundation pile static load detection is a technology for detecting the bearing capacity of pile foundation in engineering, and is used for judging whether the single pile bearing capacity of the foundation pile reaches the design standard, wherein the anchor pile beam detection method is one of commonly used detection methods.

[0003] The Chinese patent with the publication number CN209837123U discloses a pile foundation static load test device, which comprises a support platform and a plurality of pile foundations. The upper surface of the support platform is provided with a thrust mechanism, the top of the thrust mechanism is connected with a main beam, the upper surfaces of the two ends of the main beam are provided with secondary beams, the plurality of pile foundations are located below the secondary beams, each pile foundation is connected with a secondary beam through a connecting rod, and the connecting rod comprises a pre-buried rod and a threaded rod. The above scheme connects each pile foundation with a secondary beam through a connecting rod, and does not need to stack a large number of counterweights, thereby improving the experimental efficiency.

[0004] The above scheme requires that the same number of connecting rods are arranged on the two sides of the secondary beam, and a plurality of pre-buried rods need to be arranged in the pile foundation in advance to install the threaded rods. Therefore, before the test starts, the installation position of the secondary beam needs to be lofted in advance, and the pre-buried rods need to be pre-buried in the fixed position. This operation has a high requirement for the construction accuracy, is not easy to adjust, and is relatively complex to operate. UTILITY MODEL CONTENTS

[0005] The utility model intends to provide a building foundation pile static load detection device to solve the problem of complex operation of the above scheme.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] The building foundation pile static load detection device comprises a jack, a main beam, anchor piles and secondary beams. The jack is fixedly arranged on the top of the foundation pile to be detected. The main beam is arranged on the top of the output end of the jack. N anchor piles are arranged on the two sides of the main beam at intervals. An annular mounting plate is rotatably arranged on the top of each anchor pile. N secondary beams are arranged on the top of the main beam at intervals, and the length direction of the secondary beam intersects with the length direction of the main beam. The ends of the secondary beams are located above the corresponding anchor piles. A pull rod is arranged on each mounting plate on the two sides of the secondary beam. A locking mechanism connected with the corresponding pull rod is arranged on the end of each secondary beam. N is a natural number greater than or equal to 2.

[0008] The principle and effect of the technical scheme are as follows:

[0009] Before detection, 2N anchor piles are arranged on the periphery of the to-be-tested foundation pile, after the anchor piles are formed, a jack is arranged on the top of the to-be-tested foundation pile, the main beam is arranged on the top of the output end of the jack, a plurality of secondary beams are arranged on the top of the main beam at intervals, and the end of the secondary beam is arranged above the corresponding anchor pile, the mounting plate is rotated to uniformly distribute the plurality of pull rods on the mounting plate on both sides of the secondary beam, the locking mechanism at the end of the secondary beam is connected with the corresponding pull rod, and finally the jack is started to detect the bearing capacity of the to-be-tested foundation pile.

[0010] Through the above arrangement, the mounting plate arranged on the top of the anchor pile can rotate relative to the anchor pile, the pull rod does not need to be anchored in advance, and the placement position of the secondary beam does not need to be lofted in advance, so that the requirement for construction precision is reduced, and the problem of complex operation in the above scheme is solved.

[0011] In the utility model, the top of the anchor pile is fixedly provided with the connecting block with circular cross section, the mounting plate is rotatably sleeved on the connecting block, and the top of the connecting block is detachably provided with the baffle.

[0012] In the utility model, the top of the connecting block is provided with a plurality of screw holes at intervals, and the top of the baffle is provided with a plurality of first through holes aligned with the screw holes.

[0013] The principle and effect of the technical scheme are as follows:

[0014] In the initial state, the connecting block is pre-buried on the top of the anchor pile, the mounting plate is rotatably sleeved on the connecting block, the baffle is arranged on the top of the connecting block, the first through hole is aligned with the corresponding screw hole, the bolt is inserted into the screw hole through the first through hole, and the top of the bolt abuts against the top of the baffle.

[0015] Through the above arrangement, the test personnel can conveniently disassemble and assemble the mounting plate, and the baffle can limit the mounting plate, so that the mounting plate is prevented from moving vertically relative to the connecting block.

[0016] In the utility model, the top of the mounting plate is provided with a plurality of second through holes at intervals on the periphery of the anchor pile, each pull rod is arranged in the corresponding second through hole, and the bottom of each pull rod is fixedly provided with a limiting block below the mounting plate. Through the above arrangement, the pull rod can transmit force to the mounting plate.

[0017] In the utility model, the locking mechanism comprises a connecting plate, the connecting plate is arranged on the top of the secondary beam, four corners of the connecting plate are provided with mounting holes in the shape of inverted cones on both sides of the secondary beam, each pull rod is arranged in the corresponding mounting hole, and each mounting hole is symmetrically provided with clamping pieces on both sides of the pull rod. The side, where the two clamping pieces are close to each other, is provided with a groove matched with the pull rod, and the side, where the two clamping pieces are away from each other, is provided with an inclined surface matched with the mounting hole.

[0018] The principle and effects of the technical scheme are as follows:

[0019] When the main beam and the secondary beam are subjected to the upward force applied by the jack, the connecting plate moves upward, the mounting hole side wall pushes the two clamping pieces to clamp the pull rod, and the pull rod is pulled to move upward.

[0020] Through the above setting, the locking mechanism is connected with each pull rod, and then the force applied by the jack is transmitted to each pull rod.

[0021] In the utility model, the locking mechanism includes a connecting plate, the connecting plate is arranged on the top of the secondary beam, mounting holes are arranged at the four corners of the connecting plate on the two sides of the secondary beam, each pull rod is arranged in the corresponding mounting hole, a nut is threadedly sleeved on the pull rod above the connecting plate, and a pad plate is slidably sleeved between the pull rod and the nut above the connecting plate.

[0022] The principle and effects of the technical scheme are as follows:

[0023] The pad plate is sleeved on the pull rod above the connecting plate, and the nut is threadedly sleeved on the pull rod above the pad plate until the nut clamps the pad plate with the connecting plate, when the connecting plate moves upward, the pad plate and the nut are pushed to move upward, and then the nut drives the pull rod to move upward.

[0024] Through the above setting, the force applied by the jack is transmitted to each pull rod.

[0025] In the utility model, a support is further arranged on the outside of the to-be-tested foundation pile, a displacement sensor is fixedly arranged on the support, and the probe of the displacement sensor is in contact with the top surface of the to-be-tested foundation pile. Through the above setting, the vertical displacement of the to-be-tested foundation pile can be detected, and the accuracy of the foundation pile static load detection structure of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is an axonometric view of the embodiment one of the utility model;

[0027] Figure 2 It is an exploded view of part components of the utility model;

[0028] Figure 3 It is an exploded view of part components of the embodiment one of the utility model;

[0029] Figure 4 It is an axonometric view of the embodiment two of the utility model;

[0030] Figure 5 It is Figure 4 It is an enlarged view of A in the middle. DETAILED DESCRIPTION

[0031] The utility model discloses make further detailed description to the utility model below combining with the drawing and embodiment:

[0032] The reference signs in the drawing of the specification include: 10, the base pile to be measured;20, the jack;30, the main beam;40, the anchor pile;41, the mounting plate;411, the second through hole;42, the pull rod;421, the limiting block;43, the connecting block;431, the screw hole;44, the baffle;441, the first through hole;45, the bolt;50, the secondary beam;60, the locking mechanism;61, the connecting plate;62, the mounting hole;63, the clamping piece;64, the nut;65, the backing plate;70, the support;71, the displacement sensor.

[0033] First embodiment:

[0034] As shown in the accompanying Figures 1-3 The utility model discloses building base pile static load detection device, including the jack 20, the main beam 30, the anchor pile 40 and the secondary beam 50, the jack 20 fixed setting is in the top of the base pile 10 to be measured, the main beam 30 sets up in the top of the output end of the jack 20, the anchor pile 40 is spaced apart and is provided with N on the both sides of the main beam 30, the top of each anchor pile 40 is rotatably provided with the mounting plate 41 of annular, the secondary beam 50 is spaced apart and is provided with N on the top of the main beam 30, and the length direction of secondary beam 50 is crossed with the length direction of the main beam 30, and the end of secondary beam 50 is located above the corresponding anchor pile 40 respectively, each mounting plate 41 is provided with the pull rod 42 on the both sides of secondary beam 50 respectively, and the end of each secondary beam 50 is provided with the locking mechanism 60 connected with the corresponding pull rod 42, and N is the natural number greater than or equal to 2.

[0035] In the embodiment, the top of the anchor pile 40 is fixedly provided with the connecting block 43 with a circular cross section, the mounting plate is rotatably sleeved on the connecting block 43, and the top of the connecting block 43 is detachably provided with the baffle 44, and the baffle 44 is covered on the mounting plate 41.

[0036] In the embodiment, the top of the connecting block 43 is spaced apart and provided with a plurality of screw holes 431, and the top of the baffle 44 is provided with a plurality of first through holes 441 aligned with the screw holes 431.

[0037] In the embodiment, the top of the mounting plate 41 is spaced apart and provided with a plurality of second through holes 411 outside the periphery of the anchor pile 40, each pull rod 42 is respectively threaded through the corresponding second through hole 411, and the bottom of each pull rod 42 is fixedly provided with a limiting block 421 below the mounting plate 41.

[0038] In the embodiment, the locking mechanism 60 comprises a connecting plate 61 arranged on the top of the secondary beam 50, and four mounting holes 62 in the shape of inverted cones are arranged at the four corners of the connecting plate 61 on both sides of the secondary beam 50, each of the pull rods 42 is arranged in the corresponding mounting hole 62, and two clamping pieces 63 are symmetrically arranged in the mounting hole 62 on both sides of the pull rod 42, a groove matched with the pull rod 42 is arranged on the side of the two clamping pieces 63 close to each other, and an inclined surface matched with the mounting hole 62 is arranged on the side of the two clamping pieces 63 away from each other.

[0039] In the embodiment, a support 70 is further arranged outside the to-be-tested foundation pile 10, and a displacement sensor 71 is fixedly arranged on the support 70, and the probe of the displacement sensor 71 is in contact with the top surface of the to-be-tested foundation pile 10.

[0040] The specific implementation process is as follows:

[0041] Before detection, 2N anchor piles 40 are arranged on the periphery of the to-be-tested foundation pile 10, after the anchor piles 40 are formed, the jack 20 is arranged on the top of the to-be-tested foundation pile 10, the main beam 30 is arranged on the top of the output end of the jack 20, a plurality of secondary beams 50 are arranged on the top of the main beam 30 at intervals, and the end portions of the secondary beams 50 are arranged above the corresponding anchor piles 40, the mounting plate 41 is rotated so that the pull rods 42 on the mounting plate 41 are uniformly distributed on both sides of the secondary beams 50, the locking mechanism 60 at the end portion of the secondary beam 50 is connected with the corresponding pull rod 42, and finally the jack 20 is started to detect the bearing capacity of the to-be-tested foundation pile 10.

[0042] In the initial state, the connecting block 43 is pre-embedded on the top of the anchor pile 40, the mounting plate 41 is arranged on the connecting block 43, the baffle 44 is arranged on the top of the connecting block 43, the first through hole 441 is aligned with the corresponding screw hole 431, the bolt 45 is arranged through the first through hole 441 and screwed into the screw hole 431, and the top of the bolt 45 is in abutment with the top of the baffle 44.

[0043] When the main beam 30 and the secondary beam 50 are subjected to the upward force applied by the jack 20, the connecting plate 61 moves upward, the inner side wall of the mounting hole 62 pushes the two clamping pieces 63 to clamp the pull rod 42, and the pull rod 42 is pulled to move upward.

[0044] Second embodiment:

[0045] As shown in FIG. 2, the main beam 30 is arranged on the top of the jack 20, the secondary beam 50 is arranged on the top of the main beam 30, the anchor pile 40 is arranged on the top of the secondary beam 50, the mounting plate 41 is arranged on the top of the anchor pile 40, the baffle 44 is arranged on the top of the mounting plate 41, the bolt 45 is arranged through the first through hole 441 and screwed into the screw hole 431, the displacement sensor 71 is arranged on the support 70, and the probe of the displacement sensor 71 is in contact with the top surface of the to-be-tested foundation pile 10. Figure 4 , 5As shown, compared with the first embodiment, the difference of the present embodiment is that: in the present embodiment, the locking mechanism 60 comprises a connecting plate 61, the connecting plate 61 is arranged on the top of the secondary beam 50, and the four corners of the connecting plate 61 are respectively provided with mounting holes 62 on both sides of the secondary beam 50, each of the pull rods 42 is respectively threaded through the corresponding mounting hole 62, the pull rod 42 is threaded with a nut 64 above the connecting plate 61, and the pull rod 42 is slidingly sleeved with a pad plate 65 between the connecting plate 61 and the nut 64.

[0046] The specific implementation process is as follows:

[0047] The pad plate 65 is sleeved on the pull rod 42 above the connecting plate 61, and the nut 64 is threaded on the pull rod 42 above the pad plate 65 until the nut 64 and the connecting plate 61 clamp the pad plate 65, when the connecting plate 61 moves upward, the pad plate 65 and the nut 64 are pushed to move upward, and then the nut 64 drives the pull rod 42 to move upward.

[0048] The above is only an embodiment of the present application, and the specific technical solutions or characteristics of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical scheme of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A static load detection device for building foundation piles, characterized in that, The utility model relates to a kind of pile testing device, including: Jack, the jack is fixedly arranged on the top of the pile to be measured; Main beam, the main beam is arranged on the top of the output end of jack; Anchor pile, the anchor pile is respectively spaced apart with N on the both sides of main beam, the top of each anchor pile is rotatably provided with annular mounting plate; Sub-beam, the sub-beam is spaced apart with N on the top of main beam, and the length direction of sub-beam is crossed with the length direction of main beam, and the end portion of sub-beam is located above corresponding anchor pile respectively, each mounting plate is respectively provided with pull rod on the both sides of sub-beam, and the end portion of each sub-beam is provided with locking mechanism connected with corresponding pull rod; N is natural number greater than or equal to 2.

2. The static load detection device for building pile according to claim 1, wherein: The top of the anchor pile is fixedly provided with a connecting block with a circular cross section, the mounting plate is rotatably sleeved on the connecting block, and the top of the connecting block is detachably provided with a baffle, and the baffle is covered on the mounting plate.

3. The static load detection device for building pile according to claim 2, wherein: The top of the connecting block is spaced apart and provided with a plurality of screw holes, and the top of the baffle is provided with a plurality of first through holes aligned with the screw holes.

4. The static load detection device for building pile according to claim 3, wherein: The top of the mounting plate is spaced apart and provided with a plurality of second through holes outside the anchor pile, each pull rod is respectively threaded in corresponding second through hole, and the bottom of each pull rod is fixedly provided with a limiting block below the mounting plate.

5. The static load testing device for building piles according to claim 4, wherein: The locking mechanism includes a connecting plate, which is placed on the top of the sub-beam, and the four corners of the connecting plate are provided with inverted conical mounting holes on the both sides of the sub-beam, each pull rod is respectively threaded in corresponding mounting hole, and each mounting hole is symmetrically provided with a clamping piece on the both sides of the pull rod, the side of the two clamping pieces close to each other is provided with a groove matched with the pull rod, and the side of the two clamping pieces away from each other is provided with an inclined surface matched with the mounting hole.

6. The static load testing device for building piles according to claim 4, wherein: The locking mechanism includes a connecting plate, which is placed on the top of the sub-beam, and the four corners of the connecting plate are provided with mounting holes on the both sides of the sub-beam, each pull rod is respectively threaded in corresponding mounting hole, and the nut is threaded on the outer side of the connecting plate above the pull rod, and the pad is slidably sleeved between the outer side of the connecting plate and the nut.

7. The static load testing device for building piles according to any one of claims 1 to 6, wherein: It also includes a support, which is arranged on the outside of the pile to be measured, and a displacement sensor is fixedly arranged on the support, and the probe of the displacement sensor is in contact with the top surface of the pile to be measured.

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