CN110763609A - Testing device and method for testing seam type caulking waterproof performance - Google Patents
Testing device and method for testing seam type caulking waterproof performance Download PDFInfo
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- CN110763609A CN110763609A CN201911175228.3A CN201911175228A CN110763609A CN 110763609 A CN110763609 A CN 110763609A CN 201911175228 A CN201911175228 A CN 201911175228A CN 110763609 A CN110763609 A CN 110763609A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
Abstract
The invention provides a test device and a method for testing the seam caulking waterproofness, the test device comprises a left clamp, a right clamp and a first left half cabin concrete test block, the left half cabin concrete test block and the right half cabin concrete test block are fixed on the left side clamp and tightly fit to form a semi-cylindrical left half cabin body, the first right half cabin concrete test block and the second right half cabin concrete test block are fixed on the right side clamp and tightly fit to form a semi-cylindrical right half cabin body, the left half cabin body and the right half cabin body are tightly fit to form a horizontal cylindrical complete cabin body, caulking materials are filled in each caulking groove part, the cabin body is provided with a water inlet and a water outlet, the water inlet is connected with a water pressure device, and the water outlet is connected with a water pressure meter. The invention can fully simulate the waterproof performance of caulking materials at different joint parts under the actual working environment and has wide adaptability.
Description
Technical Field
The invention relates to the field of building tests, in particular to a test device and a method for testing the seam caulking waterproofness.
Background
In recent years, China builds and plans a batch of large river-crossing and sea-crossing underwater tunnels. The shield construction method has the advantages of safe construction, high tunneling speed, adaptability to complex stratum, small disturbance to surrounding environment and the like, and becomes the mainstream construction method of the large-scale underwater tunnel engineering at present. The tunnel constructed by the shield method has a plurality of joints due to the assembly of the segments, and the water resistance of the joints is directly related to the operation safety of the whole tunnel.
Caulking waterproofing is an important auxiliary line of defense for seam waterproofing, and caulking operation is generally carried out under the conditions that shield thrust is not affected and lining deformation is relatively stable. At present, the segment joint caulking material in the shield tunnel is influenced by more factors in practical engineering application and is difficult to ensure the self waterproof performance, but some existing shield tunnel elastic sealing gasket 'in-line' water tightness test devices (CN201010145789) and the like developed by Germany underground transportation facility research institute (STUVA), Japanese early rice field university or the like of the shield tunnel elastic sealing gasket disclosed by the university of the same university are single joint elastic sealing gasket/water-swelling rubber sealing gasket, and joints and other waterproof auxiliary defense lines are not considered. Some students also provide some test devices and test methods for simulating the physical and mechanical properties of the caulking materials under actual working conditions through tests, for example, the Lenzi et al provides a caulking material peeling test device and method. However, this device does not test the ability of the caulk to resist leakage when a pre-load is applied. The patent (publication No. CN 205038028U) provides a waterproof performance test device for a multi-defense line waterproof seal joint of a shield tunnel, and the test device can be used for properly and quantitatively analyzing the ultimate impermeability of a shield tunnel joint bolt hole, a segment caulking and a hand hole plugging material. Wherein, regarding the testing part of the caulking material of the duct piece, only the waterproof capability of the inner caulking material of a single strip-shaped joint under the conditions of preset slab staggering quantity, opening quantity and the like is considered, and the influence of the diversity and complexity of the joint on the waterproof capability of the caulking material is not considered.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a test device and a test method for testing the joint type caulking waterproof performance, which are used for testing the waterproof performance of the caulking materials at different joint parts of the segment concrete.
The invention is realized by the following steps:
on one hand, the invention provides a test device for testing the water resistance of a seam type caulking joint, which comprises a left side clamp, a right side clamp, a first left half cabin concrete test block, a second left half cabin concrete test block, a first right half cabin concrete test block and a second right half cabin concrete test block, wherein the first left half cabin concrete test block and the second left half cabin concrete test block are fixed on the left side clamp and are tightly jointed to form a semi-cylindrical left half cabin body, a horizontal seam groove is formed at the joint of the first left half cabin concrete test block and the second left half cabin concrete test block, the first right half cabin concrete test block and the second right half cabin concrete test block are fixed on the right side clamp and are tightly jointed to form a semi-cylindrical right half cabin body, a horizontal seam groove is also formed at the joint of the first right half cabin concrete test block and the second right half cabin concrete test block, the left half part and the right half cabin concrete test block are tightly jointed to form a horizontal cylindrical complete cabin body, the joint of the left half cabin body and the right half cabin body forms an annular joint groove, caulking materials are filled in the joint groove, the cabin body is provided with a water inlet and a water outlet, the water inlet is connected with a water inlet pressure device, and the water outlet is connected with a water pressure meter.
Further, the horizontal seams of the left half cabin body and the right half cabin body are aligned and communicated, a circumferential seam is formed in the middle, and a cross-shaped seam is formed at the intersection.
Furthermore, the horizontal joints of the left half cabin body and the right half cabin body are staggered by an angle, an annular joint is formed in the middle, and a T-shaped joint is formed at the intersection.
Furthermore, a horizontal left clamp bolt hole is formed in the left clamp, a left concrete bolt is pre-embedded in the inner walls, facing the left clamp, of the first left half-cabin concrete test block and the second left half-cabin concrete test block, and the left concrete bolt penetrates through the corresponding left clamp bolt hole to be fixed with the left clamp; and a horizontal right clamp bolt hole is formed in the right clamp, right concrete bolts are pre-embedded in the inner walls of the first right half cabin concrete test block and the second right half cabin concrete test block, which face the right clamp, and the right concrete bolts penetrate through the corresponding right clamp bolt holes to be fixed with the right clamp.
Further, still include the bottom plate, the left side of bottom plate is provided with bottom plate left side lateral wall anchor clamps, bottom plate left side lateral wall anchor clamps pass through fastening bolt with the bottom plate is fixed, be fixed with the vertical cassette that slides that contains the scale on the bottom plate left side lateral wall anchor clamps and along the vertical gliding kayser of cassette that slides from top to bottom, left side anchor clamps with the kayser is fixed.
Further, the right side of bottom plate is provided with bottom plate right side lateral wall anchor clamps, the right half of bottom plate is provided with the horizontal spout of indent rectangle that contains the scale along the central line, bottom plate right side lateral wall anchor clamps with right side anchor clamps are fixed and the bottom of the two all is equipped with the edge protruding slider that horizontal spout removed.
Further, the bottom plate right side lateral wall anchor clamps pass through the side fixation clamp and are fixed with the bottom plate.
Furthermore, a right side wall clamp bolt hole corresponding to the right side clamp bolt hole is formed in the bottom plate right side wall clamp, and the right side concrete bolt penetrates through the right side clamp bolt hole and the right side wall clamp bolt hole correspondingly and is fixed to the bottom plate right side wall clamp at the same time.
In another aspect, the present invention further provides a test method for testing the seam-type caulking waterproofness, which adopts the test apparatus for testing the seam-type caulking waterproofness, and the method includes:
fixing a first left half cabin concrete test block and a second left half cabin concrete test block on a left side clamp and folding the left half cabin concrete test block and the second left half cabin concrete test block into a left half cabin body, fixing a first right half cabin concrete test block and a second right half cabin concrete test block on a right side clamp and folding the right half cabin body into a right half cabin body, painting waterproof paint on the inner surfaces of the left half cabin body and the right half cabin body, tightly bonding the left half cabin body and the right half cabin body after twisting the angle according to the experimental requirement to form a complete cabin body, and filling caulking materials in a closed joint groove formed on the outer surface of the cabin body;
the left clamp and the right clamp are driven by a universal stretcher to respectively move up and down and horizontally, so that a corresponding mechanical state is provided for the caulking material to be detected;
utilize water injection pressure equipment to fill water to the cabin body through the water inlet to show water pressure by the water pressure gauge, the experimenter observes seam department infiltration condition and water pressure value, stops the experiment when seam position appears the infiltration, records from the experiment start to begin the length of time and the maximum water pressure value in the testing process of infiltration.
Further, still include:
when the caulking waterproof performance in a duct piece through seam assembly mode needs to be tested, the horizontal seams of the left half cabin body and the right half cabin body are aligned and communicated, an annular seam is formed in the middle, and a cross-shaped seam is formed at the intersection; when the caulking waterproof performance of the mode of assembling the staggered joints of the pipe sheets is required to be tested, the horizontal joints of the left half cabin body and the right half cabin body are staggered by an angle according to specific requirements, a circumferential joint is formed in the middle, and a T-shaped joint is formed at the intersection.
Compared with the prior art, the invention has the following beneficial effects:
(1) the test device for testing the seam caulking waterproof performance provided by the invention can be used for testing the waterproof performance of common annular seams, common strip seams, rectangular seams, cross seams (through seam assembly) and T-shaped seams (staggered seam assembly), fully simulates the waterproof performance of caulking materials at different seam parts under actual working environments, and has wide adaptability.
(2) According to the test device for testing the seam type caulking waterproofness, the relative displacement of the outer flange seam part of the concrete test block is realized to simulate the pre-stressed state of a caulking material before water pressure is applied through the relative displacement of the clamp groups on the two sides and the fixed connection relation of the clamp and the concrete test block, and the problem that the existing device cannot test the impermeability of the caulking material under the pre-stressed state is solved.
(3) According to the test method for testing the seam type caulking waterproof performance, provided by the invention, the displacement of the cabin body is adjusted, and the common annular seam, the common strip-shaped seam, the rectangular seam and the like are arranged in a combined manner, so that the waterproof performance of the caulking material at the seam part under various working conditions can be simulated in a combined manner, and the test requirements of actual engineering are met.
Drawings
FIG. 1 is a schematic diagram of a cross-shaped seam test of a test apparatus for testing the waterproof performance of a seam type caulking joint provided by an embodiment of the invention;
FIG. 2 is a schematic view of a T-seam test of a test apparatus for testing the waterproof performance of a seam-type caulking joint according to an embodiment of the present invention;
fig. 3 is a conceptual front view of a joint of a test block under two mounting methods provided by an embodiment of the present invention, wherein (a) is through-joint assembling and (b) is staggered assembling;
fig. 4 is a perspective view of a block joint concept under two mounting methods provided by the embodiment of the present invention, wherein (a) is through joint assembly and (b) is staggered joint assembly.
Description of reference numerals: 1. the concrete test block comprises a left clamp, 2, a right clamp, 3, a first left half cabin concrete test block, 4, a second left half cabin concrete test block, 5, a first right half cabin concrete test block, 6, a second right half cabin concrete test block, 7, a left clamp upper bolt hole, 8, a left clamp lower bolt hole, 9, a right clamp upper bolt hole, 10, a right clamp lower bolt hole, 11, a left side upper concrete bolt, 12, a left side lower concrete bolt, 13, a right side upper concrete bolt, 14, a right side lower concrete bolt, 15, a water inlet, 16, a water outlet, 17, a water pressure device, 18, a water pressure gauge, 19, a right side wall clamp upper bolt hole, 20, a right side wall clamp lower bolt hole, 21, a bottom plate, 22, a bottom plate left side wall clamp, 23, a fastening bolt, 24, a vertical sliding clamping seat, 25, a bottom plate right side wall clamp, 26, a horizontal sliding groove and 27 fixing clamps.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a test apparatus for testing seam caulking waterproof performance, including a left side clamp 1, a right side clamp 2, a first left half cabin concrete test block 3, a second left half cabin concrete test block 4, a first right half cabin concrete test block 5, and a second right half cabin concrete test block 6, where an opening of each concrete test block has an outer flange, and corresponding outer flanges of adjacent concrete test blocks can be tightly attached to form a seam groove; the first left half cabin concrete test block 3 and the second left half cabin concrete test block 4 are fixed on the left side clamp 1 and are tightly attached to form a semi-cylindrical left half cabin body, the junction of the first left half cabin concrete test block 3 and the second left half cabin concrete test block 4 forms a horizontal joint groove, the first right half cabin concrete test block 5 and the second right half cabin concrete test block 6 are fixed on the right side clamp 2 and are tightly attached to form a semi-cylindrical right half cabin body, the junction of the first right half cabin concrete test block 5 and the second right half cabin concrete test block 6 also forms a horizontal joint groove, the left half cabin body and the right half cabin body are tightly attached to form a horizontal cylindrical complete cabin body, the junction of the left half cabin body and the right half cabin body forms a circular joint groove, and the joint groove parts are filled with caulking materials, and can form cross seam and T-shaped seam through adjusting the torsion angle of the left half cabin body and the right half cabin body, specifically, as shown in figure 1, figure 3 (a) and figure 4 (a), the horizontal seam of the left half cabin body and the right half cabin body is aligned and communicated, the circumferential seam is formed in the middle, then the cross seam is formed at the intersection, as shown in figure 2, figure 3 (b) and figure 4 (b), the horizontal seam of the left half cabin body and the right half cabin body is staggered in angle, the circumferential seam is formed in the middle, then the T-shaped seam is formed at the intersection, thereby common annular seam, common strip seam, rectangular seam, cross seam (through seam assembly) and T-shaped seam (staggered seam assembly) can be set through the cabin body to carry out the waterproof performance test, the waterproof performance of the caulking material at different seam parts under the actual working environment is fully simulated, has wide adaptability. The cabin body is provided with a water inlet 15 and a water outlet 16, the water inlet 15 is connected with a water inlet pressure device 17, the water outlet 16 is connected with a water pressure meter 18, the water inlet pressure device 17 is utilized to inject water into the cabin body through the water inlet 15, the water resistance permeability of the caulking materials at the joint is tested, the water pressure meter 18 displays real-time water pressure, and the water pressure state is convenient to observe and record. And the stress state of the caulking material between the test blocks can be controlled in advance by controlling the vertical and horizontal displacement of the left clamp 1 and the right clamp 2.
As shown in fig. 1, the above embodiment is refined, a horizontal left-side fixture upper bolt hole 7 and a horizontal left-side fixture lower bolt hole 8 are arranged on the left-side fixture 1, a left-side upper concrete bolt 11 and a left-side lower concrete bolt 12 are respectively embedded in the inner walls of the first left-half cabin concrete test block 3 and the second left-half cabin concrete test block 4 facing the left-side fixture 1, and the left-side upper concrete bolt 11 and the left-side lower concrete bolt 12 respectively penetrate through the left-side fixture upper bolt hole 7 and the left-side fixture lower bolt hole 8 to be fixed to the left-side fixture 1, so that the left-half cabin body is fixed to the left-side fixture 1; the right side clamp 2 is provided with a horizontal right side clamp upper bolt hole 9 and a right side clamp lower bolt hole 10, the inner walls of the first right half cabin concrete test block 5 and the second right half cabin concrete test block 6 facing the right side clamp 2 are respectively pre-embedded with a right side upper concrete bolt 13 and a right side lower concrete bolt 14, the right side upper concrete bolt 13 and the right side lower concrete bolt 14 pass through the right side clamp upper bolt hole 9 and the right side clamp lower bolt hole 10 to be fixed with the right side clamp 2, and therefore the right half cabin body is fixed with the right side clamp 2.
Optimize above-mentioned embodiment, the device still includes bottom plate 21, the left side of bottom plate 21 is provided with bottom plate left side lateral wall anchor clamps 22, bottom plate left side lateral wall anchor clamps 22 through fastening bolt 23 with bottom plate 21 is fixed, be fixed with the vertical cassette 24 that slides that contains the scale on bottom plate left side lateral wall anchor clamps 22 and follow the vertical cassette 24 that slides kayser from top to bottom, left side anchor clamps 1 with the kayser is fixed. The universal stretcher is connected with the clamping rope to provide vertical pulling force, so that the change of the vertical relative position of the left clamp 1 is realized, and a corresponding vertical shearing state is provided for the caulking material to be detected. Further preferably, a bottom plate right side wall clamp 25 is arranged on the right side of the bottom plate 21, an inward concave rectangular horizontal sliding groove 26 with scales is arranged on the right half part of the bottom plate 21 along the center line, the bottom plate right side wall clamp 25 is fixed with the right side clamp 2, and the bottoms of the two are provided with convex sliding blocks which move along the horizontal sliding grooves 26, preferably, the right side wall clamp 25 of the bottom plate is provided with a right side wall clamp upper bolt hole 19 and a right side wall clamp upper bolt hole 20 which respectively correspond to the right side clamp upper bolt hole 9 and the right side clamp lower bolt hole 10, the right upper concrete bolt 13 and the right lower concrete bolt 14 respectively pass through the corresponding right upper clamp bolt hole 9 and the right lower clamp bolt hole 10, the right upper side wall clamp bolt hole 19 and the right upper side wall clamp bolt hole 20, and are simultaneously fixed with the right clamp 2 and the bottom plate right side wall clamp 25. Connect right side anchor clamps 2 through omnipotent stretcher and provide horizontal pulling force to realize the change of right side anchor clamps 2 horizontal relative position, provide corresponding transverse shear state for waiting to detect the caulking material. Further, the bottom plate right side wall fixture 25 is fixed to the bottom plate 21 by a side fixing clamp 27, so that the positions of the bottom plate right side wall fixture 25 and the right side fixture 2 are fixed after the pre-stressed state of the test block is adjusted. According to the embodiment of the invention, the relative displacement of the outer flange joint part of the concrete test block is realized to simulate the prestress state of the caulking material before water pressure is applied through the relative displacement of the clamp groups on the two sides and the fixed connection relation of the clamps and the concrete test block, so that the problem that the existing device cannot test the impermeability of the caulking material under the prestress applying state is solved.
On the other hand, the embodiment of the invention also provides a test method for testing the seam type caulking waterproofness, which adopts the test device for testing the seam type caulking waterproofness, and comprises the following steps:
fixing a first left half cabin concrete test block 3 and a second left half cabin concrete test block 4 on a left clamp 1 and folding the left half cabin concrete test block and the second left half cabin concrete test block into a left half cabin body, fixing a first right half cabin concrete test block 5 and a second right half cabin concrete test block 6 on a right clamp 2 and folding the right half cabin body into a right half cabin body, painting waterproof paint on the inner surfaces of the left half cabin body and the right half cabin body, tightly bonding the left half cabin body and the right half cabin body after twisting the angle according to the experimental requirement to form a complete cabin body, and filling caulking materials in a closed joint groove formed on the outer surface of the cabin body;
the left clamp 1 and the right clamp 2 are driven by a universal stretcher to respectively move up and down and horizontally, so that a corresponding mechanical state is provided for the caulking material to be detected;
the water inlet pressure device 17 is used for injecting water into the cabin body through the water inlet 15, the water pressure is displayed by the water pressure meter 18, an experimenter observes the water seepage condition and the water pressure value at the joint, the experiment is stopped when the water seepage occurs at the joint, and the time from the beginning of the experiment to the beginning of the water seepage and the maximum water pressure value in the experiment process are recorded.
Further, when the caulking waterproof performance of the pipe piece through seam assembly mode needs to be tested, the horizontal seams of the left half cabin body and the right half cabin body are aligned and communicated, an annular seam is formed in the middle, and a cross-shaped seam is formed at the intersection; when the caulking waterproof performance of the mode of assembling the staggered joints of the pipe sheets is required to be tested, the horizontal joints of the left half cabin body and the right half cabin body are staggered by an angle according to specific requirements, a circumferential joint is formed in the middle, and a T-shaped joint is formed at the intersection. At this time, the formed seam caulking groove network simultaneously has a plurality of parts such as common annular seams, common strip-shaped seams, rectangular seams, cross seams (through seam assembly)/T seams (staggered seam assembly). When the cross seam and the T seam are switched, the test can be continued only by rotating the half cabin on one side by a certain angle according to the test requirement before filling the caulking material and then fixing the half cabin on the clamp.
Adjusting the horizontal and vertical slippage by using a universal drawing machine according to specific test requirements to enable the slippage to reach a preset position, and subjecting the caulking material to preset deformation; the concrete test block embedded bolts are ensured to be correspondingly aligned with the corresponding clamp bolt holes on a straight line, and the apertures are matched; the concrete test blocks are correspondingly adhered and folded into a complete water cabin, a water inlet 15 of the top wall of the right upper cabin block is connected with a water inlet pressure device 17, and a water outlet 16 of the top wall of the left upper cabin block is connected with a water pressure meter 18; the cabin is filled with water, so that the water contacts the joint part of the concrete test block and is immersed in the caulking material.
When the waterproof performance of the caulking material under the states of tension, shearing and mixed stress needs to be tested, the horizontal stretching state of the caulking material in the groove can be controlled by the relative displacement of the bottom slide blocks of the right side clamp 2 and the right side wall clamp 25 of the bottom plate in the horizontal sliding groove 26 on the right side of the bottom plate 21. The vertical shearing state can be controlled by the relative displacement of the clamp 1 on the clamp seat 24 of the vertical sliding of the left side wall of the bottom plate 21, namely the relative displacement of the clamp groups on the two sides and the fixed connection relationship of the clamp and the concrete test block are utilized to realize the relative displacement of the outer flange joint part of the concrete test block; the complex stress state can be set by combining the two single states, so that the prestress state of the caulking material before the water pressure is applied can be controlled. It should be noted that the displacement variations can be precisely controlled by a universal stretcher. The invention can conveniently realize the detection of the water penetration resistance of the caulking materials at different joint parts of the concrete segment under the controllable prestressed state.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a test device of test seam form caulking waterproof performance which characterized in that: comprises a left clamp, a right clamp, a first left half cabin concrete test block, a second left half cabin concrete test block, a first right half cabin concrete test block and a second right half cabin concrete test block, wherein the first left half cabin concrete test block and the second left half cabin concrete test block are fixed on the left clamp and tightly attached to form a semi-cylindrical left half cabin body, a horizontal joint groove is formed at the joint of the first left half cabin concrete test block and the second left half cabin concrete test block, the first right half cabin concrete test block and the second right half cabin concrete test block are fixed on the right clamp and tightly attached to form a semi-cylindrical right half cabin body, a horizontal joint groove is also formed at the joint of the first right half cabin concrete test block and the second right half cabin concrete test block, the left half cabin body and the right half cabin body are tightly attached to form a horizontal cylindrical complete body, and a joint of the left half cabin body and the right half cabin body forms a circular joint groove, the seam jointing groove parts are filled with caulking materials, the cabin body is provided with a water inlet and a water outlet, the water inlet is connected with a water inlet pressure device, and the water outlet is connected with a water pressure gauge.
2. The test apparatus for testing the waterproof performance of a seam type caulking according to claim 1, wherein: the horizontal seams of the left half cabin body and the right half cabin body are aligned and communicated, an annular seam is formed in the middle, and a cross-shaped seam is formed at the intersection.
3. The test apparatus for testing the waterproof performance of a seam type caulking according to claim 1, wherein: the horizontal joint of the left half cabin body and the right half cabin body is staggered by an angle, an annular joint is formed in the middle, and a T-shaped joint is formed at the intersection.
4. The test apparatus for testing the waterproof performance of a seam type caulking according to claim 1, wherein: a horizontal left clamp bolt hole is formed in the left clamp, left concrete bolts are pre-embedded in the inner walls, facing the left clamp, of the first left half cabin concrete test block and the second left half cabin concrete test block, and the left concrete bolts penetrate through the corresponding left clamp bolt holes to be fixed with the left clamp; and a horizontal right clamp bolt hole is formed in the right clamp, right concrete bolts are pre-embedded in the inner walls of the first right half cabin concrete test block and the second right half cabin concrete test block, which face the right clamp, and the right concrete bolts penetrate through the corresponding right clamp bolt holes to be fixed with the right clamp.
5. The test apparatus for testing the waterproof performance of a seam form caulking according to claim 4, wherein: the clamping device is characterized by further comprising a bottom plate, a bottom plate left side wall clamp is arranged on the left side of the bottom plate, the bottom plate left side wall clamp is fixed to the bottom plate through a fastening bolt, a vertical sliding clamping seat containing scales and a clamping lock capable of sliding up and down along the vertical sliding clamping seat are fixed to the bottom plate left side wall clamp, and the left side clamp is fixed to the clamping lock.
6. The test apparatus for testing the waterproof performance of a seam form caulking according to claim 5, wherein: the right side of bottom plate is provided with bottom plate right side lateral wall anchor clamps, the right half of bottom plate is provided with the horizontal spout of indent rectangle that contains the scale along the central line, bottom plate right side lateral wall anchor clamps with the fixed and bottom of the two of right side anchor clamps all is equipped with the edge the protruding slider that horizontal spout removed.
7. The test apparatus for testing the waterproof performance of a seam form caulking according to claim 6, wherein: and the clamp on the side wall of the right side of the bottom plate is fixed with the bottom plate through a side fixing clamp.
8. The test apparatus for testing the waterproof performance of a seam form caulking according to claim 6, wherein: and a right side wall clamp bolt hole corresponding to the right side clamp bolt hole is formed in the bottom plate right side wall clamp, and the right side concrete bolt penetrates through the right side clamp bolt hole and the right side wall clamp bolt hole and the right side clamp to be fixed at the same time by the bottom plate right side wall clamp.
9. A test method for testing the waterproof performance of a seam form caulking, which is characterized by using the test apparatus for testing the waterproof performance of a seam form caulking according to any one of claims 1 to 8, the method comprising:
fixing a first left half cabin concrete test block and a second left half cabin concrete test block on a left side clamp and folding the left half cabin concrete test block and the second left half cabin concrete test block into a left half cabin body, fixing a first right half cabin concrete test block and a second right half cabin concrete test block on a right side clamp and folding the right half cabin body into a right half cabin body, painting waterproof paint on the inner surfaces of the left half cabin body and the right half cabin body, tightly bonding the left half cabin body and the right half cabin body after twisting the angle according to the experimental requirement to form a complete cabin body, and filling caulking materials in a closed joint groove formed on the outer surface of the cabin body;
the left clamp and the right clamp are driven by a universal stretcher to respectively move up and down and horizontally, so that a corresponding mechanical state is provided for the caulking material to be detected;
utilize water injection pressure equipment to fill water to the cabin body through the water inlet to show water pressure by the water pressure gauge, the experimenter observes seam department infiltration condition and water pressure value, stops the experiment when seam position appears the infiltration, records from the experiment start to begin the length of time and the maximum water pressure value in the testing process of infiltration.
10. The test method for testing the waterproof performance of a seam style caulk of claim 9 further comprising:
when the caulking waterproof performance in a duct piece through seam assembly mode needs to be tested, the horizontal seams of the left half cabin body and the right half cabin body are aligned and communicated, an annular seam is formed in the middle, and a cross-shaped seam is formed at the intersection; when the caulking waterproof performance of the mode of assembling the staggered joints of the pipe sheets is required to be tested, the horizontal joints of the left half cabin body and the right half cabin body are staggered by an angle according to specific requirements, a circumferential joint is formed in the middle, and a T-shaped joint is formed at the intersection.
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| CN112461673A (en) * | 2020-11-25 | 2021-03-09 | 南水北调中线干线工程建设管理局河南分局 | Simulation test system and method for waterproof sealing material under hydraulic pressure working condition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112461673A (en) * | 2020-11-25 | 2021-03-09 | 南水北调中线干线工程建设管理局河南分局 | Simulation test system and method for waterproof sealing material under hydraulic pressure working condition |
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