CN117054217A - Static mechanical property testing device for anchor net supporting system - Google Patents

Abstract

The invention relates to a static mechanical property testing device of an anchor spraying net support system, which comprises a main frame, a lifting and lifting mechanism, a test loading mechanism and a monitoring mechanism, wherein the main frame is connected with the lifting and lifting mechanism; the lifting and lifting mechanism is arranged on the main frame, the test loading device is arranged in the main frame, and the monitoring mechanism is respectively in communication connection with the lifting and lifting mechanism and the test loading mechanism; the main frame includes inside supporting component and outer frame subassembly and pedestal 101, and experimental loading mechanism sets up on inside supporting component, promotes handling mechanism setting on outer frame subassembly, and inside supporting component all sets up on the pedestal with outer frame subassembly, and inside supporting component is connected with outer frame subassembly. The device is movably arranged through the test loading mechanism, so that the test modes of the static mechanical property test device of the anchor spraying net support system are diversified, the test of various support modes can be realized, and various anchoring test schemes can be arranged to evaluate the overall energy absorption of the system of the anchor spraying net support combined structure.

Description

Static mechanical property testing device for anchor net supporting system

Technical Field

The invention relates to the technical field of underground rock engineering supporting test equipment, in particular to a static mechanical property testing device and a static mechanical property testing method for an anchor spraying net supporting system.

Background

The geological conditions of deep engineering and ground engineering are greatly different, and the high-energy level and large-quantity engineering disasters are frequent, the mechanism is unclear and difficult to predict due to the intrinsic properties of typical 'three-high' occurrence environments of deep rock and the additional properties of 'strong disturbance' and 'strong aging' of resource exploitation. Therefore, in order to ensure the safety of underground engineering structures, a good support system is important. The anchor-spraying net support is one of the most common support systems for supporting and strengthening underground rock and soil mass, and is generally composed of an anchor rod embedded in a rock mass, an anchor rope and a surface support. Effective support is a necessary condition for underground rock excavation design. The use of unsuitable support systems can lead to a series of problems and have a significant impact on the safety of the operators and equipment. The effectiveness and performance of the anchor grid support system depends on the performance of the anchor rods and the surface support, the mutual cooperation, the compatibility and interaction among the elements of the support system, so that the accurate understanding of the mechanical behavior and failure mechanism of each component is very important for the surface support and the overall support performance.

In the past, great efforts have been directed to analyzing the performance and failure mechanisms of support elements under different loading conditions. However, limited by the lack of specialized research equipment, most research has focused on improving the performance of single support elements, particularly anchors, and testing methods, while ignoring its overall failure mechanism, relatively few studies have been conducted on metal meshes and even the entire support system. In the prior art, although there are patents of the invention aiming at the test equipment of elements such as anchor nets, such as anchor bolt supporting combined members and metal net mechanical test devices (CN 112377229A) of the department of China, a multifunctional anchor system dynamic and static coupling performance test system (CN 114383947A) of the university of mining and an underground engineering anchor net spraying support structure mechanical performance test evaluation device (CN 107941620A) of the university of Shandong building, and the like, most of the inventions are biased to the test of a single anchor net, the test form is simple, and the stress condition of an anchor rod in a real rock mass can not be simulated, so that the test of the whole energy absorption of the anchor net spraying support system is very important.

Disclosure of Invention

First, the technical problem to be solved

In view of the defects and shortcomings of the prior art, the invention provides a static mechanical property testing device and a testing method for an anchor-spraying net supporting system, which solve the technical problems that the existing static mechanical property testing device for the anchor-spraying net supporting system is single in testing form and cannot imitate the stress condition of an anchor rod in a real rock mass.

(II) technical scheme

In order to achieve the above purpose, the static mechanical property testing device of the anchor spraying net support system of the present invention comprises: the device comprises a main frame, a lifting and lifting mechanism, a test loading mechanism and a monitoring mechanism;

the lifting and lifting mechanism is arranged on the main frame, the test loading device is movably arranged in the main frame, and the monitoring mechanism is respectively in communication connection with the lifting and lifting mechanism and the test loading mechanism;

the main frame comprises an inner supporting component, an outer frame component and a pedestal, wherein the test loading mechanism is arranged on the inner supporting component, the lifting and lifting mechanism is arranged on the outer frame component, the inner supporting component and the outer frame component are both arranged on the pedestal, and the inner supporting component is connected with the outer frame component.

Optionally, the outer frame assembly comprises a column shoe, a frame column and a frame beam;

the inner support assembly comprises an escalator, a support column, a column rail brace, a cap beam, a sliding channel and a plurality of groups of force transmission sliding rails;

the column feet are arranged on the pedestal, one end, close to the pedestal, of the frame column is connected with the column feet, the frame column is connected with the frame beam, and the lifting and lifting mechanism is arranged on the frame beam;

one end of the supporting column, which is close to the pedestal, is connected with the column foot, the top ends of the adjacent supporting columns in the same vertical plane are connected through the cap beams, and the escalator is arranged on the supporting columns;

the test loading device is mounted on the force transmission slide rail, the force transmission slide rail of the same group is positioned on the same horizontal plane, and the force transmission slide rails of each group are mutually parallel and positioned on different horizontal planes.

Optionally, the force transmission sliding rails comprise a pair of first force transmission sliding rails and a pair of second force transmission sliding rails;

The first force transmission sliding rails are arranged in parallel in pairs, the second force transmission sliding rails are arranged in parallel in pairs, the first force transmission sliding rails are parallel to the second force transmission sliding rails, the second force transmission sliding rails and the first force transmission sliding rails are located on the same horizontal plane, and the length of the second force transmission sliding rails is smaller than that of the first force transmission sliding rails.

Optionally, the test loading mechanism comprises an anchor spraying net support combined test assembly, a pier anchor assembly and a loading assembly;

the anchor spraying net support combined test assembly is arranged on the force transmission sliding rail, the anchor spraying net support combined test assembly is connected with the loading assembly, the pier anchor assembly is connected with the anchor spraying net support combined test assembly, the anchor spraying net support combined test assembly can convert different support structures, and the loading assembly can provide static load.

Optionally, the anchor spraying net support combined test assembly comprises an inner die, an outer die and an anchor rod to be tested, wherein the outer die is connected with a plurality of groups of first force transmission sliding rails and a plurality of groups of second force transmission sliding rails, the inner die is connected with a plurality of groups of first force transmission sliding rails and a plurality of groups of second force transmission sliding rails, and the anchor rod to be tested is detachably arranged in the inner die and the outer die.

Optionally, the inner die comprises an inner die shell, a plurality of symmetrically arranged inner die fasteners, a fixed beam, inner die clamping plates arranged in pairs and rail clamping plates arranged in pairs;

the outer mold comprises an outer mold shell, a plurality of symmetrically arranged outer mold fasteners and outer mold clamping plates arranged in pairs;

the inner die clamping plate comprises a first clamping plate and a second clamping plate which are detachably connected, the first clamping plate and the second clamping plate are arranged in parallel, the track clamping plate comprises a first track clamping plate and a second track clamping plate which are detachably connected, and the first track clamping plate and the second track clamping plate are arranged in parallel;

the utility model discloses a power transmission slide rail, including interior mould casing, interior mould casing detachable sets up in adjacent a pair of first power transmission slide rail forms be located the inboard in the slip passageway, interior mould fastener with interior mould casing is connected, the interior mould fastener butt that the symmetry set up in the same horizontal plane, the fixed beam set up in first splint with between the second splint, the first side butt of fixed beam first splint with first track splint, the second side butt of fixed beam second splint with the first side of power transmission slide rail, the second side butt of power transmission slide rail the second track splint, first splint with the second splint are connected.

The outer mold clamp plate comprises a third clamp plate and a fourth clamp plate which are detachably connected, the third clamp plate and the fourth clamp plate are arranged in parallel, the outer mold clamp fastener is connected with the outer mold shell, the outer mold shell is detachably arranged in a sliding channel formed by the adjacent first force transmission slide rail and second force transmission slide rail, the two outer mold clamp fastener are symmetrically arranged in the same horizontal plane and are abutted against each other, the first side of the force transmission slide rail is abutted against the third clamp plate, the second side of the force transmission slide rail is abutted against the fourth clamp plate, and the third clamp plate is connected with the fourth clamp plate.

Optionally, the pier anchor assembly comprises a pier anchor slide, an anchor plate and an anchor pier;

the pier anchor slide way is arranged on the pedestal, the pier anchor slide ways are not less than three groups, the pier anchor slide way is provided with an installation beam, the anchor pier is provided with an installation hole corresponding to the installation beam, the anchor pier is detachably installed on the pier anchor slide way, the anchor pier is also provided with an anchor hole for installing a metal net and at least one pair of anchor piers are fixedly arranged on the anchor slide way through the anchor plate.

Optionally, the loading assembly comprises a servo hydraulic jack, a pressure-bearing cross beam, a longitudinal movable support and a longitudinal sliding rail;

the vertical sliding rail is arranged on the frame beam which is horizontally arranged, the vertical moving support is arranged on the vertical sliding rail in a sliding mode, the bearing cross beam is arranged on the vertical moving support, the servo hydraulic jack is arranged on the bearing cross beam, the bottom end of the servo hydraulic jack is in butt joint with the metal net, and the servo hydraulic jack and the vertical moving support are in communication connection with the monitoring mechanism.

Optionally, the lifting and hoisting mechanism comprises a hoisting beam, a hoisting piece, a pair of transverse moving supports and a pair of transverse sliding rails;

the frame beams comprise a first top beam, a second top beam, a third top beam and a fourth top beam, wherein the first top beam and the second top beam are a group of opposite top beams, and the third top beam and the fourth top beam are a group of opposite top beams;

the pair of transverse sliding rails are respectively arranged on the third top beam and the fourth top beam, the transverse moving supports are arranged on the transverse sliding rails in a one-to-one correspondence manner, two ends of the lifting beam are respectively connected with the pair of transverse moving supports, the lifting beam is positioned between the first top beam and the second top beam, and the lifting piece is slidably arranged on the lifting beam.

Optionally, the monitoring mechanism includes a pressure monitor, a displacement monitor, and a data acquisition display;

the pressure monitor set up in the metal mesh is close to one side of biography power slide rail, the displacement monitor set up in on the pedestal with the monitoring the displacement of metal mesh, the data acquisition display all with the pressure monitor with the displacement monitor is connected.

(III) beneficial effects

The beneficial effects of the invention are as follows: the invention provides a static mechanical property testing device of an anchor-spraying net supporting system, which is characterized in that through the arrangement of an inner die and an outer die in a main frame, the inner die and the outer die are movable, any supporting distance can be realized, evaluation of various supporting forms is realized, and the movable inner die and the outer die are convenient for workers to hang supporting metal nets with different specifications, so that various and multi-specification tests are facilitated. The movable setting of the test loading mechanism enables the test modes of the static mechanical property testing device of the anchor spraying net support system to be diversified, and various anchoring test schemes can be set to evaluate the whole energy absorption of the system of the anchor spraying net support combined structure, so that the method is particularly suitable for the functions of various support elements in the whole support system, the energy absorption performance and the damage mechanism provide judgment basis, and the technical bottlenecks of lacking test devices and relying on engineering experience in the past support evaluation are broken.

Moreover, when the anchor net supporting system is tested, the anchor rods consistent with the actual engineering are driven into the concrete, so that the defect that the conventional test device cannot truly restore the stress of the anchor rods in the rock mass is overcome, and the actual working condition is restored more.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a static mechanical property testing device of an anchor-spraying net support system of the invention;

FIG. 2 is a schematic top view of the static mechanical property testing device of the anchor net support system of the present invention;

FIG. 3 is a schematic side view of the static mechanical property testing device of the anchor net support system of the present invention;

FIG. 4 is a schematic structural diagram of a test loading mechanism of the static mechanical property testing device of the anchor-spraying net support system of the invention;

fig. 5 is a schematic structural diagram of a pier anchor assembly and a loading assembly of the static mechanical property testing device of the anchor spraying net support system of the present invention.

[ reference numerals description ]

100: a main frame; 101: a pedestal; 110: an outer frame assembly; 111: column feet; 112: a frame column; 113: a frame beam; 114: diagonal bracing; 115: a safety protection net; 120: an inner support assembly; 121: an escalator; 122: a support column; 123: a column rail brace; 124: a force transmission slide rail; 125: a cap beam;

200: lifting and lifting mechanisms; 201: hoisting the beam; 202: a lifting member; 203: transversely moving the support; 204: a transverse slide rail;

300: a test loading mechanism; 301: a bolt; 302: a metal mesh; 310: the anchor spraying net supports the combined test assembly; 311: an outer mold; 312: an inner mold; 313: a clamping plate; 320: pier anchor assembly; 321: pier anchor slideway; 322: an anchor plate; 323: an anchor pier; 330: loading the assembly; 331: a servo hydraulic jack; 332: a pressure-bearing cross beam; 333: longitudinally moving the support; 334: a longitudinal slide rail.

Detailed Description

The invention will be better explained for understanding by referring to the following detailed description of the embodiments in conjunction with the accompanying drawings. Wherein, reference herein to "upper": "lower". The term of azimuth of. Reference is made to the orientation of fig. 3.

In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As shown in fig. 1 and 2, the present invention provides a static mechanical property testing device for a support system of an anchor-spraying net, which includes: the device comprises a main frame 100, a lifting and hoisting mechanism 200, a test loading mechanism 300 and a monitoring mechanism; the lifting and lifting mechanism 200 is arranged on the main frame 100, the test loading device is arranged in the main frame 100, and the monitoring mechanism is respectively in communication connection with the lifting and lifting mechanism 200 and the test loading mechanism 300; the main frame 100 includes an inner support assembly 120, an outer frame assembly 110, and a stand 101, the test loading mechanism 300 is disposed on the inner support assembly 120, the lifting mechanism 200 is disposed on the outer frame assembly 110, the inner support assembly 120 and the outer frame assembly 110 are disposed on the stand 101, and the inner support assembly 120 is connected with the outer frame assembly 110.

In this embodiment, the static mechanical property testing device of the anchor spraying net support system is provided with the test loading mechanism 300, so that the test device can adjust any loading position through longitudinally moving the support 333 in the use process, the test of single metal or metal net 302+ sprayed concrete can be realized through the pier anchor system, the test of metal net 302+ anchor rod 301 and metal net 302+ anchor rod 301+ sprayed concrete can be realized through the anchor spraying net support combined testing system, and the evaluation is provided for various anchoring forms of practical engineering, thereby having important on-site guidance significance. And, the setting of lifting and lifting mechanism 200 can be used for transferring the mould to any required position for testing the support combined structure of any common anchorage interval of full scale.

As shown in fig. 3, the outer frame assembly 110 includes a toe 111, a frame post 112, and a frame beam 113; the inner support assembly 120 comprises an escalator 121, support columns 122, column rail supports 123, cap beams 125, and sliding channels, and a plurality of sets of force transfer slide rails 124; the column feet 111 are arranged on the pedestal 101, one end, close to the pedestal 101, of the frame column 112 is connected with the column feet 111, the frame column 112 is connected with the frame beam 113, and the lifting and lifting mechanism 200 is arranged on the frame beam 113; one end of the support column 122 close to the pedestal 101 is connected with the column base 111, the top ends of the adjacent support columns 122 in the same vertical plane are connected through cap beams 125, and the escalator 121 is arranged on the support columns 122; the column rail brace 123 is arranged on the support column 122, one end of the force transmission sliding rail 124 is fixed between the frame beams 113, the other end of the force transmission sliding rail 124 is connected with the support column 122 through the column rail brace 123, a sliding channel is formed between the adjacent force transmission sliding rails 124, the test loading device is arranged on the force transmission sliding rails 124, the same group of force transmission sliding rails 124 are positioned on the same horizontal plane, and the groups of force transmission sliding rails 124 are mutually parallel and positioned on different horizontal planes.

Also provided in the main frame 100 of the outer frame assembly 110 are diagonal braces 114, which are connected between the frame posts 112 and the frame beams 113 at 45 ° angles to ensure stable connection between the frame posts 112 and the frame beams 113 in the main frame 100; the column rail brace 123 is arranged on the support column 122, one end of the force transmission sliding rail 124 is fixed between the frame beams 113, the other end of the force transmission sliding rail 124 is connected with the support column 122 through the column rail brace 123, a sliding channel is formed between the adjacent force transmission sliding rails 124, the die set is slidably arranged on the force transmission sliding rails 124, the force transmission sliding rails 124 of the same group are positioned on the same horizontal plane, and the force transmission sliding rails 124 of each group are mutually parallel and positioned on different horizontal planes. In a preferred embodiment, the column base 111 has a square cylindrical structure, the bottom of which is connected to a square tray, and bolt holes are formed in the square tray and anchored to the concrete stand 101. The frame posts 112 are preferably square steel posts that are inserted and anchored in the footer 111. Frame beams 113 are preferably i-beams, and are vertically attached to frame posts 112. The main frame 100 is also provided with a safety protection net 115, three sides of the safety protection net 115 are arranged in the main frame 100 in a surrounding mode, the safety protection net 115 is respectively connected with the frame beams 113 and the frame columns 112 to prevent broken stones splashed by the static mechanical property testing device of the anchor-spraying net support system in the testing process, so that the safety of the device is improved, and the personal safety of test personnel is protected. The arrangement of the staircase 121 makes the device more convenient for the staff to use.

The plurality of sets of force transfer slide rails 124 each include a pair of first force transfer slide rails and a pair of second force transfer slide rails; the first power transmission sliding rails are arranged in parallel, the second power transmission sliding rails are arranged in parallel, the first power transmission sliding rails are parallel to the second power transmission sliding rails, the second power transmission sliding rails are located above the first power transmission sliding rails, and the length of the second power transmission sliding rails is smaller than that of the first power transmission sliding rails.

In the above embodiment, by the force transmission slide rail 124 provided in the main frame 100, one end of the force transmission slide rail 124 is fixed between the frame beams 113, the other end of the force transmission slide rail 124 is connected with the support column 122 through the column rail brace 123, and the mold is provided on the force transmission slide rail 124, thereby enabling the mold to move between the support column 122 and the frame beams 113 to simulate the installation conditions in actual engineering. In a preferred embodiment, the force-transmitting slide rail 124 includes two pairs of first force-transmitting slide rails parallel to each other and two pairs of second force-transmitting slide rails parallel to each other, the first pair of first force-transmitting slide rails and the first pair of second force-transmitting slide rails are on the same horizontal plane, the second pair of first force-transmitting slide rails and the second pair of second force-transmitting slide rails are on the same horizontal plane, and three sliding channels are formed between the first force-transmitting slide rails and the second force-transmitting slide rails, and the anchor-spraying net support combined test assembly 310 is mounted in the sliding channels. The setting of post rail brace 123 then makes the hoist and mount of spouting anchor net support combination test assembly 310 convenient and fast more and passes through post rail brace 123 with the power transmission on the power transmission slide rail 124 to the support column 122 on, and the tip of support column 122 has then strengthened the stability of support column 122 through setting up detachable cap beam 125, has avoided inside supporting component 120 to rock in the test process. In this embodiment, the column rail brace 123 is preferably a sleeve design, and is provided with bolt holes at the periphery, which can be sleeved on the support column 122 and fixed by bolts, and an extension plane is provided at the top end side, which can be used as a connection plane of the force transmission sliding rail 124; the two ends of the cap beam 125 may be square, the cap beam 125 may be detachably connected to the support column 122, and the cap beam 125 may be detached when the inner mold 312 and the outer mold 311 are lifted, so as to ensure that the sliding channel is smooth, the lifting process is smoothly performed, and the cap beam 125 is mounted on the support column 122 after the anchor grid support combined test assembly 310 is lifted, so as to increase the structural stability of the inner support assembly 120.

Referring to fig. 3, the lifting and handling mechanism 200 includes a lifting beam 201, a lifting member 202, a pair of laterally movable supports 203, and a pair of laterally sliding rails 204; the frame beams 113 comprise a first top beam, a second top beam, a third top beam and a fourth top beam, wherein the first top beam and the second top beam are a group of opposite top beams, and the third top beam and the fourth top beam are a group of opposite top beams; the paired transverse sliding rails 204 are respectively arranged on the third top beam and the fourth top beam, the transverse moving supports 203 are respectively arranged on the transverse sliding rails 204 in a one-to-one correspondence manner, two ends of the lifting beam 201 are respectively connected with the paired transverse moving supports 203, the lifting beam 201 is positioned between the first top beam and the second top beam, and the lifting piece 202 is slidably arranged on the lifting beam 201.

In this embodiment, the lifting and lifting mechanism 200 enables the lifting and lifting mechanism 200 to perform lifting and lifting in the transverse direction and the longitudinal direction simultaneously through the lifting member 202 installed in a sliding manner and the transverse moving support 203 installed on the transverse sliding rail 204, so that the lifting and lifting mechanism 200 is flexible and convenient to lift and has a wide lifting and lifting range. In a preferred embodiment, the lifting member 202 is an electric hoist, which has a small volume, light weight, simple operation, convenient use and convenient installation. The lifting member 202 may also be a winch. In this embodiment, an electric motor is disposed on the lateral movement support 203 and is slidably connected to the lateral sliding rail 204, and the sliding of the lateral movement support 203 on the lateral sliding rail 204 is controlled by the start and stop of the electric motor, and the sliding of the lateral movement support 203 on the lateral sliding rail 204 drives the lifting beam 201 to horizontally move in the lateral direction. And, be provided with motor and pulley in the lateral shifting support 203, set up on the lateral sliding rail 204 to can transversely freely remove on the lateral sliding rail 204, lateral sliding rail 204 both sides are provided with the safe anticreep device of baffle type in order to prevent the lateral shifting support 203 of installation hoist beam 201 from derailing.

As shown in fig. 4, the test loading mechanism 300 includes a spray anchor net support combination test assembly 310, a pier anchor assembly 320, and a loading assembly 330; the anchor spraying net support combined test assembly 310 is arranged on the force transmission sliding rail 124, the anchor spraying net support combined test assembly 310 is connected with the loading assembly 330, the pier anchor assembly 320 is connected with the anchor spraying net support combined test assembly 310, the anchor spraying net support combined test assembly 310 can convert different support structures, and the loading assembly 330 can provide static loads. The anchor net support combined test assembly 310 comprises an inner die 312, an outer die 311 and an anchor rod 301 to be tested, wherein the outer die 311 is connected with a plurality of groups of first force transmission sliding rails and a plurality of groups of second force transmission sliding rails, the inner die 312 is connected with a plurality of groups of first force transmission sliding rails and a plurality of groups of second force transmission sliding rails, the anchor rod 301 to be tested is detachably arranged in the inner die 312 and the outer die 311, and concrete is filled in the inner die 312 and the outer die 311.

In this embodiment, the number of the inner mold 312 and the outer mold 311 can be increased or decreased according to the requirement in the actual use process, the anchor rods 301 to be tested are detachably arranged in the inner mold 312 and the outer mold 311 in a one-to-one correspondence manner, the inner mold 312 and the outer mold 311 are both hollow, concrete can be poured in the shells of the inner mold 312 and the outer mold 311 for simulating the surrounding rock condition in engineering practice, the anchor rods 301 to be tested are installed from the bottoms of the inner mold 312 and the outer mold 311 after the concrete is cured, and the inner mold 312 and the outer mold 311 are arranged on the sliding channel formed by the force transmission sliding rail 124 according to the test requirement to form the anchor spraying net support combined test assembly 310.

In a preferred embodiment, the inner mold 312 includes an inner mold shell, a plurality of symmetrically disposed inner mold fasteners, a fixed beam, a pair of inner mold clamp plates 313, and a pair of rail clamp plates; the inner mold clamp 313 includes a first clamp and a second clamp which are detachably connected, the first clamp and the second clamp are arranged in parallel, the rail clamp includes a first rail clamp and a second rail clamp which are detachably connected, and the first rail clamp and the second rail clamp are arranged in parallel; the detachable setting of interior mould casing is in the inboard slip passageway that lies in that adjacent a pair of first biography power slide rail formed, interior mould fastener and interior mould casing are connected, interior mould fastener butt that the symmetry set up in the same horizontal plane, the fixed beam sets up between first splint and second splint, the first side butt of fixed beam first splint and first track splint, the second side butt second splint of fixed beam and the first side of biography power slide rail 124, the second side butt second track splint of biography power slide rail 124, first splint and second splint are connected.

The outer mold 311 includes an outer mold shell, a plurality of symmetrically disposed outer mold fasteners, and outer mold clamp plates 313 disposed in pairs; the outer mold clamp plate 313 comprises a third clamp plate and a fourth clamp plate which are detachably connected, the third clamp plate and the fourth clamp plate are arranged in parallel, the outer mold clamp is connected with the outer mold shell, the outer mold shell is detachably arranged in a sliding channel formed by a first force transmission sliding rail and a second force transmission sliding rail which are adjacent, the outer mold clamp is arranged in the same horizontal plane in a symmetrical manner, the first side of the force transmission sliding rail 124 is abutted against the third clamp plate, the second side of the force transmission sliding rail 124 is abutted against the fourth clamp plate, and the third clamp plate is connected with the fourth clamp plate.

In this embodiment, anti-slip ribs are provided in both the outer mold shell and the inner mold shell to prevent relative displacement of the concrete and the cylinder wall in the shells during testing from affecting the accuracy of the test. And interior mould fastener passes through the bolt and can dismantle the connection interior mould casing and can dismantle the connection through the bolt, and outer mould fastener passes through the bolt and can dismantle the connection outer mould casing, and outer mould splint 313 passes through outer mould 311 bolt detachable setting on biography power slide rail 124, and interior mould splint 313 passes through interior mould 312 bolt detachable setting on biography power slide rail 124, has all seted up the constant head tank on outer mould splint 313 and the interior mould splint 313 for still improved its stability after the installation when outer mould splint 313 and interior mould splint 313 are convenient for install. The length of the outer die and the inner die is about 3.2m, and an anchor rod with the longest length of about 3.2m can be driven in. The mold can be clamped by the clamping plate 313 by special devices and fastened on any position on the force transmission slide rail 124, the outer mold 311 can be directly fixed on any position on the force transmission slide rail 124, the inner mold is fixed on a transverse I-shaped beam by the clamping plate 313, and the I-shaped beam is fixed on the force transmission slide rail 124 by the clamping plate 313.

Referring to fig. 5, pier anchor assembly 320 includes pier anchor slide 321, anchor plate 322 and anchor pier 323; pier anchor slide 321 sets up on pedestal 101, and pier anchor slide 321 is not less than three, is provided with the installation roof beam on the pier anchor slide 321, is provided with the mounting hole corresponding with the installation roof beam on the anchor mound 323, and anchor mound 323 detachably installs on pier anchor slide 321, still offers the anchor hole that is used for installing metal mesh 302 on the anchor mound 323 and has at least a pair of anchor mound 323 to pass through anchor plate 322 fixed setting on the anchor slide.

In this embodiment, at least three sets of pier anchor slides 321 are disposed parallel to each other on the base 101, the pier anchor slides 321 being in a groove-like arrangement, wherein a mounting beam, preferably a T-beam, is disposed. While the anchor pier 323 is preferably cylindrical, the bottom of the anchor pier 323 is provided with a mounting hole that interfaces with a mounting Liang Xiangka to enable the anchor pier 323 to slide freely in the pier anchor slide 321. Moreover, the anchor piers 323 are all arranged in pairs in the pier anchor slide 321 so that the pier anchor assembly 320 can be stably hung on the metal net 302 for testing.

Referring to fig. 5, the loading assembly 330 includes a servo hydraulic jack 331, a pressure-bearing cross beam 332, a longitudinally movable mount 333, and a longitudinal slide rail 334; the longitudinal sliding rail 334 is installed on the frame beam 113 which is horizontally arranged transversely, the longitudinal moving support 333 is arranged on the longitudinal sliding rail 334 in a sliding mode, the pressure-bearing cross beam 332 is arranged on the longitudinal moving support 333, the servo hydraulic jack 331 is arranged on the pressure-bearing cross beam 332, the bottom end of the servo hydraulic jack 331 is abutted to the metal net 302, and the servo hydraulic jack 331 and the longitudinal moving support 333 are in communication connection with the monitoring mechanism.

In this embodiment, the pressure-bearing beam 332 is disposed in the longitudinally movable support 333, and a motor and a pulley are disposed in the longitudinally movable support 333, so that the longitudinally movable support 333 can freely slide on the longitudinal slide rail 334; the servo hydraulic jack 331 is arranged on the pressure-bearing beam 332, and the bottom is provided with a replaceable pressure head for applying static force; the pressure-bearing beam 332 is of hollow design to facilitate passage of the servo hydraulic jack 331 and the mold.

In a preferred embodiment, the monitoring mechanism comprises a pressure monitor, a displacement monitor, an image collector, a thermal energy monitor, and a data collection display; the monitor sets up in the metal mesh 302 and is close to the one side of biography power slide rail 124, and displacement monitor sets up on the pedestal 101 in order to monitor the displacement of metal mesh 302, and the image acquisition ware sets up on the pedestal 101, and the heat energy monitor sets up on the metal mesh 302, and the data acquisition display all is connected with monitor, displacement monitor, image acquisition ware and heat energy monitor.

In one embodiment of the present invention, the object under test is a single metal mesh 302. The main structural parts of the invention required for testing are a loading assembly 330 and a pier anchor assembly 320. Before the test, the anchor piers 323 are slid into the proper positions on the pier anchor slide ways 321, if 3 anchor piers 323 are arranged on the pier anchor slide ways 321 positioned at two sides of the pier anchor slide ways 321, and 2 anchor piers 323 are arranged on the pier anchor slide ways 321 positioned in the middle, a 3-2-3 anchor pier 323 test scheme is formed, and a 4-3-4 anchor pier 323 test scheme can be formed similarly. Further, the metal mesh 302 may be bolted into the threaded hole of the anchor pier 323, a pressure sensor may be provided between the anchor pier 323 and the bolt, and the pressure sensor may be connected to a control monitoring system, so that a desired pre-tightening force may be obtained. The metal mesh 302 is provided with a displacement sensor, and the displacement sensor is in communication connection with a monitoring mechanism, so that displacement data information of each part of the metal mesh 302 can be obtained in real time in the experimental process.

In addition to the above-described embodiment, a plurality of laser displacement meters may be provided around the metal mesh 302 on the base 101, and a control monitoring system may be connected to the metal mesh 302 for communication to comprehensively monitor the deformation state of the bottom of the metal mesh 302. Finally, the pressure-bearing cross beam 332 is slid into the appropriate loading position, the servo hydraulic jack 331 applies a downward static load to the ram, and the ram applies a static load to the metal mesh 302 until the metal mesh 302 breaks.

In one embodiment of the present invention, taking a supporting combined structure of a tested object, namely a metal net 302+an anchor rod 301+sprayed concrete as an example, main structural parts of the present invention required for testing are a loading system 330 and an anchor net supporting combined testing system 310. Prior to the test, the mold should be fixed with a special anchor and then poured with concrete and the desired test bolt 301 driven in. After curing to the required strength, the mold is lifted by the electric hoist 202 and transferred to the appropriate position on the force transfer rail 124.

Further, as shown in fig. 2, if the number of the outer molds 311 is 4, the number of the inner molds 312 is 3, then the required ground anchoring interval is adjusted, the molds are fixed by using clamping plates 313, then the metal net 302 with the required tested specification is anchored to the bottom of the molds through anchor rods 301 in the molds, and concrete is sprayed at the bottom of the metal net 302, thus forming the anchoring test scheme of '4-3-4'. Similarly, an anchor test protocol of "3-2-3" may also be composed.

Further, a pressure sensor may be provided between the anchor wire 302 and the nut between the dies, and a desired pre-tightening force of the anchor rod 301 may be obtained.

Further, on the basis of the above implementation, a displacement sensor is provided between the sprayed concrete and the metal mesh 302, and the deformation state of the metal mesh 302 can be obtained in real time by the monitoring mechanism. Acoustic emission monitoring sensors and optical fibers are embedded in the interior and the exterior surface of the concrete to monitor information such as cracking, temperature, deformation and the like in the anchoring body.

Further, in order to comprehensively monitor the deformation of the concrete and the metal mesh 302, a plurality of laser displacement meters may be provided around the metal mesh 302, and the monitoring mechanism may be connected to the laser displacement meters for communication, so as to comprehensively monitor the deformation of the concrete or the bottom of the metal mesh 302.

In an embodiment, the pressure-bearing cross beam 332 is slid into a suitable loading position, the servo hydraulic jack 331 applies a downward static load to the pressure head, the pressure head applies a static load to the metal mesh 302 until the support combined structure is damaged, and the energy absorption threshold of the support combined structure is evaluated scientifically and reasonably. The above-mentioned supporting combined structure may be an anchor net supporting system, or may be an anchor net+anchor rod 301, an anchor net+sprayed concrete, or a single anchor net.

In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.

In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.

Claims (10)

1. The static mechanical property testing device of the anchor spraying net supporting system is characterized by comprising: the device comprises a main frame (100), a lifting and lifting mechanism (200), a test loading mechanism (300) and a monitoring mechanism;

The lifting and lifting mechanism (200) is arranged on the main frame (100), the test loading device is movably arranged in the main frame (100), and the monitoring mechanism is respectively in communication connection with the lifting and lifting mechanism (200) and the test loading mechanism (300);

main frame (100) include inside supporting component (120) and external frame subassembly (110) and pedestal (101), experimental loading mechanism (300) set up in on inside supporting component (120), promote handling mechanism (200) set up in on external frame subassembly (110), inside supporting component (120) with external frame subassembly (110) all set up in on pedestal (101), inside supporting component (120) with external frame subassembly (110) are connected.

2. The anchor grid support system static mechanical property testing device of claim 1, wherein the outer frame assembly (110) comprises a column foot (111), a frame column (112) and a frame beam (113);

the inner support assembly (120) comprises an escalator (121), a support column (122), a column rail support (123), a cap beam (125) and a sliding channel, and a plurality of groups of force transmission sliding rails (124);

the column base (111) is arranged on the pedestal (101), one end, close to the pedestal (101), of the frame column (112) is connected with the column base (111), the frame column (112) is connected with the frame beam (113), and the lifting and lifting mechanism (200) is arranged on the frame beam (113);

One end, close to the pedestal (101), of the supporting column (122) is connected with the column base (111), the top ends of the adjacent supporting columns (122) in the same vertical plane are connected through the cap beams (125), and the escalator (121) is installed on the supporting columns (122);

the column rail brace (123) set up in on the support column (122), the one end of biography power slide rail (124) is fixed in between frame roof beam (113), the other end of biography power slide rail (124) is through column rail brace (123) with support column (122) are connected, adjacent form between biography power slide rail (124) sliding channel, experimental loading device install in biography power slide rail (124) are last, same group biography power slide rail (124) are located same horizontal plane, each group biography power slide rail (124) are parallel to each other and are located different horizontal planes.

3. The anchor grid support system static mechanical property testing device of claim 2, wherein the plurality of sets of force transfer slide rails (124) each comprise a pair of first force transfer slide rails and a pair of second force transfer slide rails;

the first force transmission sliding rails are arranged in parallel in pairs, the second force transmission sliding rails are arranged in parallel in pairs, the first force transmission sliding rails are parallel to the second force transmission sliding rails, the second force transmission sliding rails and the first force transmission sliding rails are located on the same horizontal plane, and the length of the second force transmission sliding rails is smaller than that of the first force transmission sliding rails.

4. A static mechanical property testing device for an anchor-spraying net support system according to claim 3, wherein the test loading mechanism (300) comprises an anchor-spraying net support combined testing component (310), a pier anchor component (320) and a loading component (330);

the anchor spraying net support combined test assembly (310) is arranged on the force transmission sliding rail (124), the anchor spraying net support combined test assembly (310) is connected with the loading assembly (330), the pier anchor assembly (320) is connected with the anchor spraying net support combined test assembly (310), the anchor spraying net support combined test assembly (310) can convert different support structures, and the loading assembly (330) can provide static loads.

5. The static mechanical property testing device of an anchor-spraying net support system according to claim 4, wherein the anchor-spraying net support combined testing component (310) comprises an inner mold (312), an outer mold (311) and an anchor rod (301) to be tested, wherein the outer mold (311) is connected with a plurality of groups of the first force transmission sliding rails and a plurality of groups of the second force transmission sliding rails, the inner mold (312) is connected with a plurality of groups of the first force transmission sliding rails and a plurality of groups of the second force transmission sliding rails, the anchor rod (301) to be tested is detachably arranged in the inner mold (312) and the outer mold (311), and concrete is filled in the inner mold (312) and the outer mold (311).

6. The anchor grid support system static mechanical property testing device of claim 5, wherein the inner mold (312) comprises an inner mold shell, a plurality of symmetrically arranged inner mold fasteners, a fixed beam, a pair of inner mold clamp plates (313) and a pair of track clamp plates;

the outer mold (311) comprises an outer mold shell, a plurality of symmetrically arranged outer mold fasteners and outer mold clamp plates (313) arranged in pairs;

the inner die clamping plate (313) comprises a first clamping plate and a second clamping plate which are detachably connected, the first clamping plate and the second clamping plate are arranged in parallel, the track clamping plate comprises a first track clamping plate and a second track clamping plate which are detachably connected, and the first track clamping plate and the second track clamping plate are arranged in parallel;

the utility model discloses a power slide rail, including interior mould casing, interior mould casing detachable sets up in adjacent a pair of first power slide rail forms be located in the slip passageway of inboard, interior mould fastener with interior mould casing is connected, the interior mould fastener butt that the symmetry set up in the same horizontal plane, the fixed beam set up in first splint with between the second splint, the first side butt of fixed beam first splint with first track splint, the second side butt of fixed beam second splint with the first side of power slide rail (124), the second side butt of power slide rail (124) second track splint, first splint with the second splint is connected.

The outer mold clamp plate (313) comprises a third clamp plate and a fourth clamp plate which are detachably connected, the third clamp plate and the fourth clamp plate are arranged in parallel, the outer mold clamp is connected with the outer mold shell, the outer mold shell is detachably arranged in a sliding channel formed by the adjacent first force transmission sliding rail and second force transmission sliding rail, the two outer mold clamp clamps are symmetrically arranged in the same horizontal plane and are abutted against each other, the first side of the force transmission sliding rail (124) is abutted against the third clamp plate, the second side of the force transmission sliding rail (124) is abutted against the fourth clamp plate, and the third clamp plate is connected with the fourth clamp plate.

7. The static mechanical property testing device of an anchor network-sprayed support system of claim 4, wherein the pier anchor assembly (320) comprises a pier anchor slide (321), an anchor plate (322) and an anchor pier (323);

pier anchor slide (321) set up in on pedestal (101), pier anchor slide (321) are no less than three groups, be provided with the installation roof beam on pier anchor slide (321), be provided with on anchor pier (323) with the corresponding mounting hole of installation roof beam, anchor pier (323) detachably install in on pier anchor slide (321), still set up on anchor pier (323) be used for installing the anchor hole of expanded metal (302) and have at least a pair of anchor pier (323) pass through anchor board (322) fixed set up in on the anchor slide.

8. The static mechanical property testing device of an anchor-spraying net support system according to claim 4, wherein the loading assembly (330) comprises a servo hydraulic jack (331), a pressure-bearing beam (332), a longitudinally movable support (333) and a longitudinal slide rail (334);

the vertical sliding rail (334) is arranged on the frame beam (113) horizontally arranged transversely, the vertical moving support (333) is arranged on the vertical sliding rail (334) in a sliding mode, the pressure-bearing cross beam (332) is arranged on the vertical moving support (333), the servo hydraulic jack (331) is arranged on the pressure-bearing cross beam (332), the bottom end of the servo hydraulic jack (331) is abutted to the metal net (302), and the servo hydraulic jack (331) and the vertical moving support (333) are in communication connection with the monitoring mechanism.

9. The static mechanical property testing device of an anchor grid support system according to any one of claims 1-8, wherein the lifting and handling mechanism (200) comprises a lifting beam (201), a lifting member (202), a pair of lateral mobile supports (203) and a pair of lateral sliding rails (204);

the frame beams (106) comprise a first top beam, a second top beam, a third top beam and a fourth top beam, wherein the first top beam and the second top beam are a group of opposite top beams, and the third top beam and the fourth top beam are a group of opposite top beams;

The pair of transverse sliding rails (204) are respectively arranged on the third top beam and the fourth top beam, the transverse moving supports (203) are correspondingly arranged on the transverse sliding rails (204), two ends of the lifting beam (201) are respectively connected with the pair of transverse moving supports (203), the lifting beam (201) is positioned between the first top beam and the second top beam, and the lifting piece (202) is slidably arranged on the lifting beam (201).

10. The static mechanical property testing device of the anchor network support system according to any one of claims 1-8, wherein the monitoring mechanism comprises a pressure monitor, a displacement monitor and a data acquisition display;

the pressure monitor is arranged on one side, close to the force transmission sliding rail (124), of the metal net (302), the displacement monitor is arranged on the pedestal (101) to monitor the displacement of the metal net (302), and the data acquisition display is connected with the pressure monitor and the displacement monitor.