JP3973774B2 - Method for confirming water stoppage performance of joint water stop member and joint water stop member - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for confirming water stoppage performance of a joint part water stop member and a joint part water stop member, and in particular, a method for confirming water stoppage performance of a joint part water stop member capable of clearly recognizing a leakage state from a joint part water stop member. And a joint water stop member suitable for the confirmation method.
[0002]
[Prior art]
The concrete structures constituting the reservoirs and clean water ponds for storing domestic water, industrial water, etc., water supply and sewerage channels, etc. cannot be avoided because of the increase in size. For this reason, in concrete structures, joints are generally provided by preventing further cracks in the concrete.
Various proposals have been made regarding the joint structure of the concrete structure, but the joint part is inherently connected to the cracks of the frame, so if the joint part deteriorates, water leaks from that part, There was a problem that a so-called water loss phenomenon occurred.
In addition to the crack problem of the concrete structure, it is necessary to follow the displacement due to unequal settlement of the structure or earthquake, etc., but if the tracking exceeds the limit point, the joint part will be damaged. Therefore, as a structure, it is general to provide a joint water-stopping member in which a slack is formed in the width direction of the joint in order to prevent water loss.
Furthermore, when concrete structures deteriorate over time, deterioration of joints becomes a problem at the same time as cracks in the main body of the frame, and it is normal to take measures against water loss against deterioration damage of joints. Has been done.
[0003]
As shown in FIG. 9, the conventional measures against water loss are to seal the joint portion with a groove-like slack portion 51 in the center with respect to the joint portion 50, and fix the locking portions 52 on both sides to the housing with the fixing device 53. The joint water stop member 54 is applied. The joint water-stopping member 54 is made of butyl rubber, and the locking portions on both sides of the joint water-stopping member 54 have a flat plate shape in which two rows of parallel protrusions 55 are joined to the flat plate or the casing.
The joint water-stopping member 54 is fixed to the housing using a fixing tool 53 composed of anchor bolts and nuts screwed together with the anchor bolts planted at regular intervals along the joint. An attempt was made to prevent water leakage from the joint portion by crimping the joint water-stopping member to the surface of the housing in a state where each protrusion was crushed by tightening the nut.
[0004]
However, with such means, although the continuous parallel state of the protrusions is apparently accurately joined to the housing surface, the fixing portion 53 fixes the engaging portion 52 of the joint water-stopping member to the housing surface. Then, when the tightening force of the nut with respect to the protrusion 55 is not uniform or when the protrusion 55 changes, there is a possibility that the crimping state with respect to the housing surface becomes unstable.
In particular, no test method has been established for confirming the water-stopping condition during construction of the water-stopping work for joints, and the construction has been completed without checking the water-stopping performance in the above-mentioned enforcement state. In some cases, we were worried, so we were worried about quality control after construction.
[0005]
[Problems to be solved by the invention]
The present invention provides a water stop performance confirmation method capable of clearly confirming a water leakage state from a joint water stop member during construction of the joint water stop construction, and a joint water stop member suitable for this confirmation method. .
[0006]
[Means for Solving the Problems]
The method for confirming the water stoppage performance of the joint water stop member according to the present invention is basically a joint portion in which the joint portion is closed by a groove-like slack portion in the center, and the engaging portions on both sides are fixed to the housing with a fixing tool. Consists of an outer tube that connects to the fixing tool of the water-stopping member and connects to the sample supply unit to cover the fixing device and closes it, and an intermediate tube that is connected to the fixing device equipped with a gap inside the outer tube A leakage test sample pressed from the test device is placed along the fixing tool and supplied to the locking part of the joint water-stopping member to check for leakage. The test device is mounted on the anchor bolt of the fixing tool directly or with the nut removed. Further, it is also characterized by injecting by means similar to the above through a pressing plate constituting the fixing tool.
[0007]
The joint part water-stopping member according to the present invention is characterized in that, in the joint part water-stopping member, parallel protrusions divided into a plurality of sections are formed on the engaging parts on both sides of the joint part water-stopping member. Yes. And each water-stopping performance confirmation method of the present invention to the above-mentioned joint part water-stopping member has taken the constituent requirements of each above-mentioned invention.
[0008]
In addition, the test apparatus used for each of the water stoppage performance confirmation methods is an outer tube that is connected to the leak check sample supply unit, receives the supply of the leak check sample, and covers the fixing member of the joint water stop member to close the fixer. And an intermediate tube provided with a screw hole that is screwed with an anchor bolt of a fixing device provided by a coupling member so as to form a gap inside the outer tube.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic diagram for explaining a method for confirming the water stoppage performance of a joint water stop member according to the present invention.
As shown in the figure, the joint portion water-stopping member 1 in the present embodiment has a central portion slackened in a corresponding manner to the groove formed at the upper end of the joint, and protrudes downward. The locking portions 5 on both sides have bolt holes for inserting anchor bolts or the like in order to fix the joint water-stopping member to the housing, and have good jointability with the housing on both sides of the bolt holes. In order to achieve this, parallel projection rows 8 are formed.
Therefore, the water stoppage performance confirmation method according to the present invention starts by first selecting the fixing device 2 in the area where the performance confirmation is to be performed and mounting the test device 3 so as to close it. Next, the test apparatus 3 receives the supply of the leakage confirmation sample that has been pressurized from a pipe connected to a leakage confirmation sample storage unit (not shown), and along the fixing device 2 that blocks this, a joint water-stopping member 1 is injected into the locking portion 5.
After the leakage confirmation sample is filled between the parallel protrusion rows 8 on both sides of the bolt hole through the bolt hole through which the anchor bolt is inserted from the fixing tool 2, there is a portion where the water stop construction is not complete from there. It will be ejected outside.
Since the water stoppage performance confirmation method according to the present invention can be carried out by a simple operation of just visually recognizing leakage from the joint water stop member 1 as described above, it does not cause individual differences or omissions. The water stop performance of the joint water stop member can be confirmed.
[0010]
In order to confirm the water stop performance, it is necessary to check the presence or absence of leakage for each predetermined section. In this embodiment, butyl rubber or the like is used to partition the joint water stop member 1 into sections of a predetermined length. It is necessary to attach the adhesive 4 between the protrusion rows 8 in advance.
Various samples can be used as the leakage confirmation sample, but it can be said that water or a colored gas is desirable from the viewpoint of handling in view of measures against water loss from the joint. However, it is not limited to this in a strict sense.
Confirmation of the water-stopping performance for the joint part water-stopping member can confirm the water-stopping state of the entire joint-part water-stopping member by repeatedly performing the above operation for each predetermined section. If the performance confirmation method is used, it is possible to carry out water stop treatment and confirmation in detail, so that quality assurance after construction can be ensured.
[0011]
FIG. 2 is a cross-sectional view showing a state in which a test apparatus is mounted on a fixing tool for a joint water-stopping member.
A bolt hole 7 through which a fixing tool 2 for pressing and fixing the joint water-stopping member 1 to the housing 6 is formed in the engaging portion 5 on both sides of the joint water-stopping member 1 in the center portion. Parallel projection rows 8 are formed on both sides of the hole 7 to improve the bondability with the housing 6. Anchor bolts 9 of the fixing tool 2 are implanted in the housing 6.
In the fixing device 2, a pressing plate 10 is further disposed on the surface of the locking portion 5. As is apparent from the figure, the pressing plate 10 is configured such that its width is located slightly outside the projection row 8, whereby the pressing force by the anchor bolt 9 and the nut 12 inserted into the bolt hole 11 is reduced. The projection rows 8 are directed so as to work in the direction in which they approach each other without being pushed out.
[0012]
The pressing plate 10 includes a butyl rubber packing 13, a metal washer 14, a nut 12, and an anchor bolt 9 planted on the housing 6, and the projection row 8 of the joint water-stopping member 1. It is in close contact with the surface with equal force.
In the test apparatus 3, the middle pipe 16 disposed inside the outer pipe 15 is screwed with the anchor bolt 9 and attached to the fixing tool 2. The outer tube 15 is configured to receive supply of water or the like as a leakage confirmation sample from a pipe 17 connected to a sample storage unit (not shown).
A packing 19 such as an O-ring mounted on the flange 18 at the lower end of the outer tube 15 is arranged along the fixing device 2 without leaking from the outer tube when the outer tube is supplied with water or the like. This is to continuously supply the space 20 between the eight.
[0013]
As is clear from the above configuration, the space 20 between the two protrusion rows 8 communicates with the test apparatus 3 through the bolt hole 7 of the joint water-stopping member 1 and the bolt hole 11 of the pressing plate 10. Therefore, when the protrusion close to the space 20 formed by the protrusion row 8, that is, the joint water-stopping member 1 has a problem in water-stopping performance, by injecting water while applying pressure from the test device 3 to the water, etc. The water supplied through the fixing device 2 leaks from the edge of the joint water-stopping member 1, and a defective portion of the water-stopping performance can be easily confirmed.
[0014]
FIG. 3 is a cross-sectional view showing the outer tube 15 and the middle tube 16 of the test apparatus 3.
The outer tube 15 constituting the test apparatus 3 has a cylindrical shape and is closed at the upper end, and a coupling portion 23 having a hole 21 on the inner side and a screw 22 on the outer side is formed thereon. A flange 18 having a packing groove 24 is formed at the lower end.
The coupling portion 23 is for screwing and receiving supply of water or the like with a coupling nut provided in the connection pipe 17 from the leakage confirmation sample supply portion.
The middle tube 16 has a shape similar to that of the outer tube, and is disposed inside the outer tube and supported by the coupling members 25 from four directions. The inner pipe 16 has a tap 26 which is screwed with an anchor bolt 9 for mounting the test apparatus 3 on the fixing tool.
Although one embodiment has been introduced above for the outer tube and the middle tube constituting the test apparatus, the test apparatus in the present invention is not limited to this, and the gist is the outer tube and the fixing tool. This is to supply a sample for confirming leakage of water or the like along the fixing tool to the locking portion of the joint water-stopping member, and to connect to the fixing tool for the above-mentioned blocking by the middle pipe. Any configuration that can achieve this can be adopted as an embodiment.
[0015]
FIG. 4 is a cross-sectional view showing another embodiment in which a test device is attached to a fixing tool for a joint water-stopping member.
In the present embodiment, as shown in the figure, the packing 13, the metal washer 14, and the nut 12 are temporarily removed from the anchor bolt 9, and the middle tube 16 is screwed into the anchor bolt 9 having a sufficient threaded portion. Thus, the test apparatus 3 is attached to the fixing tool 2.
According to this, in the above-described example, the water passes between the packing 13, the metal washer 14, and the nut 12 or through the joint surface between the packing 13 and the pressing plate 10, and the bolt hole 11 of the pressing plate and the bolt of the locking portion. Compared to being transferred to the hole 7, water that is press-fitted from the outer tube 15 of the test apparatus 3 is directly transferred to the bolt hole 11 of the pressing plate and the bolt hole 7 of the locking part. The flow of water to the space 20 between the two protrusion rows 8 formed in 5 is extremely smooth.
Therefore, according to the present embodiment, it is possible to positively reveal the water leakage of the water-stopping lacking portion in the joint water-stopping member, and to conduct the water-stopping performance confirmation test of the joint water-stopping member simply and reliably. it can.
[0016]
5 to 7 show other embodiments in which improvements are made to the fixing device.
As shown in the plan view of FIG. 5, the fixing device 30 for fixing the joint water-stopping member 1 to the housing is the same as the fixing device 2 except for the fixing device 2 and the pressing plate 31 described above. The pressing plate 31 is provided with a hole 32 communicating with the bolt hole 11 in the vicinity of the bolt hole.
The hole 32 functions to transfer the water supplied to the outer tube of the test apparatus to the bolt hole 11 without passing through the packing, metal washer and nut that are configured as a fixing tool. The position is appropriate between the packing 13 of the fixing device 2 and the packing 19 provided on the outer tube 15.
The structure of the hole 32 is circular on the surface of the pressing plate as shown in FIG. 6, but the shape on the side in contact with the locking portion 5 is a groove 33 connected to the bolt hole 11 for ease of processing. Formed as.
However, the shape of the hole 32 is not limited to this, and can be arbitrarily selected as long as it can communicate with the bolt hole 11 from the surface of the pressing plate.
[0017]
FIG. 7 is a sectional view showing a state in which the test apparatus is mounted on the fixing device. The pressing plate 31 of the fixing tool 30 to which the test device 3 is mounted has a hole 32 connected to the bolt hole 11 between the pressing plate 31 and the engaging portion 5 as is apparent in the figure.
The pressing plate 31 includes a butyl rubber packing 13, a metal washer 14, a nut 12 and an anchor bolt 9 planted on the casing 6, and the projection row 8 of the joint water-stopping member 1 is connected to the casing surface. 2 is the same as the embodiment described with reference to FIG.
In the test apparatus 3, the anchor bolt 9 protruding from the nut 12 of the fixing tool 30 and the intermediate tube 16 are screwed together and attached to the fixing tool 2. The outer tube 15 of the test apparatus 3 communicates with the space 20 between the protrusion rows 8 through the bolt hole 7 of the joint water-stopping member 1, the bolt hole 11 of the pressing plate 10, and the hole 32.
Therefore, when pressure water or the like is injected from the test device 3, the water supplied through the fixing device 30 leaks from the edge of the joint water-stopping member 1, so that the water-stopping performance can be easily confirmed as in the above example. Similarly, in the present embodiment, it is possible to omit operations such as removing the nut of the fixing tool from the anchor bolt in advance and retightening the fixing tool after the test is completed.
This is effective in that the joint water-stopping member of the part where the test was performed can eliminate anxiety that the water-stopping performance may be missing when the fixing tool is fastened again.
[0018]
In FIG. 8, the joint part water stop member suitable for the water stop performance confirmation method by this invention is shown.
As shown in the figure, the joint portion water-stopping member 40 has a central portion 41 that hangs down corresponding to a groove formed at the upper end of the joint and protrudes downward. The stop portion 42 has a bolt hole 43 through which an anchor bolt for fixing the joint water-stopping member 40 is inserted into the housing. Parallel protrusions are provided on both sides of the bolt hole 43 to improve the bondability with the housing. A column 44 is configured.
A space 46 is formed between the parallel projection rows 44 by partitions 45 arranged at a predetermined interval, and the bolt hole 43 is provided substantially in the middle of the space 46.
[0019]
By configuring the joint water-stopping member 40 as described above, the following advantages can be exhibited when applied to the frame joint part.
On the construction side, even if the joint water stop member is fixed to the housing, even if it is tightened with a fixing tool, the parallel projection rows are connected to each other to prevent the projection rows from being pushed out. It is possible to increase the uniform pressing of the pressing plate including the partition, and also with respect to the water stop, the projection row is partitioned to establish a water stop area around each fixing tool. It becomes possible.
Further, on the confirmation surface of the water stop performance, the test can be performed without performing any auxiliary work on the joint water stop member that the portion where the performance check is performed is clear based on the fixing tool.
[0020]
Since the test apparatus used for each water stop performance confirmation method according to the present invention has been described above, a description thereof will be omitted.
The test apparatus 3 puts the outer tube 15 on the fixing member of the joint water-stopping member and screwes it with the anchor bolt of the fixing device so as to close the fixing device 2, and from the leakage confirmation sample supply unit connected thereto. It is configured to receive the pressed leakage confirmation sample and inject it into the joint water stop member. Since the confirmation state of the water stop performance is only to visually check the leakage state from the joint water stop member, the device can be manufactured at low cost, and its handling and operation are extremely simple and reliable.
[0021]
【The invention's effect】
The method for confirming the water-stopping performance of the joint water-stopping member according to the present invention is basically to place a test device on the fixing device of the joint-water-stopping member and place the leakage check sample pressed from the test device on the joint-stopping member. Since it is characterized by checking the presence or absence of leakage by supplying it to the locking part of the water member, the handling of the test equipment is easy, and the water stopping performance can also be checked for leakage from the joint water stopping member. Since it is only confirmed by this, it has the effect of being able to carry out reliable confirmation without individual differences.
[0022]
Further, the joint water-stopping member according to the present invention is characterized by forming parallel protrusions divided into a plurality of sections at the engaging portions on both sides of the joint water-stopping member. It is possible to prevent the water from being pushed out and to establish a water stop area by partitioning the projection row for water stoppage. The test can be performed without any auxiliary work.
[0023]
Further, the test apparatus according to the present invention is composed of an outer tube which is supplied with a leakage confirmation sample and is covered with a fixing tool, and an inner tube which is provided inside the outer tube and is screwed with an anchor bolt. The production can be made inexpensive, and the handling and operation are extremely simple and reliable.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an outline of a method for confirming water stoppage performance of a joint water stop member according to the present invention. FIG. 2 is a view of mounting a test device on a fixing tool. FIG. 4 is a mounting view of a test apparatus with nuts and the like of a fixing tool removed. FIG. 5 is a plan view of a fixing tool employing a pressing plate according to the present invention. FIG. Fig. 7 is a plan view and a cross-sectional view of a pressing plate. Fig. 7 is a mounting view of a test device to a fixing device according to the present invention. Fig. 8 is a plan and cross-sectional view of a joint water-stopping member according to the invention. Perspective view showing the outline of members 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 Joint part water stop member 30 Fixing tool 2 Fixing tool 31 Pressing plate 3 Test apparatus 32 Hole communicating with bolt hole 4 Adhesive 33 Groove 5 Locking part 40 Joint part water stop member 6 Housing 41 Central part 7 Bolt hole 42 Engagement Stop portion 8 Projection row 43 Bolt hole 9 Anchor bolt 44 Protrusion row 10 Press plate 45 Partition 11 Bolt hole 46 Space 12 Nut 50 Joint portion 13 Packing 51 Groove-like slack portion 14 Metal washer 52 Locking portion 15 Outer tube 53 Fixing tool 16 Middle pipe 54 Joint portion water stop member 17 Pipe 55 Protrusion 18 Flange 19 Packing 20 Space between protrusion rows 21 Hole 22 Screw 23 Coupling portion 24 Groove 25 Coupling material 26 Tap

Claims (14)

This is a method for confirming the water-stopping performance of a joint water-stopping member in which the joint portion is closed by a groove-like slack portion in the center and the locking portions on both sides are fixed to the housing with a fixing tool, and fixing the joint-water-stopping member A test composed of an outer tube that is connected to a leakage confirmation sample supply unit and covers the fixing tool to close it, and an intermediate tube that is connected to the fixing tool equipped with a gap in the outer tube. Leakage confirmed from the joint water-stopping member is confirmed by supplying the leak-proof sample pressed from the test device to the locking part of the joint water-stopping member along the fixing tool. The water stop performance confirmation method of the joint part water stop member to perform. 2. The joint water stop according to claim 1, wherein the fixing tool is composed of an anchor bolt and a nut implanted in a housing, and a leakage check sample is injected by attaching a test device to the anchor bolt at a predetermined position. A method for checking the water stopping performance of members. 3. The method for confirming the water stoppage performance of a joint water stop member according to claim 2, wherein the nut of the fixing tool at a predetermined position is removed, the test device is attached to an anchor bolt, and a leak check sample is injected. The fixing tool is composed of an anchor bolt and a nut and a pressure plate of a joint water-stopping member implanted in the housing, and a test device is attached to the anchor bolt at a predetermined position and a leakage confirmation sample is injected through the pressure plate. The water stop performance confirmation method of the joint part water stop member of Claim 1 characterized by the above-mentioned. 5. The method for confirming the water stoppage performance of a joint water stop member according to claim 4, wherein the nut of the fixing tool at a predetermined position is removed, the test device is attached to an anchor bolt, and a leak check sample is injected. The water stop performance confirmation method according to claim 4 or 5, wherein a hole communicating with the anchor bolt is provided in the pressing plate. In a joint water-stopping member in which the joint portion is closed by a groove-like slack portion in the center and the engaging portions on both sides are fixed to the housing with a fixing tool, the engaging portion is joined to the housing divided into a plurality of sections. A joint water-stopping member characterized by forming parallel protrusions. The fixing device of the joint water stop member is connected to the leakage confirmation sample supply unit, and is connected to the outer tube that covers the fixing device and closes it, and the fixing device equipped with a gap in the outer tube. A test device composed of a tube is mounted and placed, and the divided section formed in the locking portion of the joint water-stopping member is placed along the fixing tool with the leakage confirmation sample pressed from the test device. The method for confirming the water stop performance of the joint portion water stop member applied to the joint portion water stop member according to claim 7, wherein leakage from the joint portion water stop member is confirmed by supplying the parallel protrusions to the projection. 9. The fixing device for a joint water-stopping member according to claim 8, wherein the fixing tool is composed of an anchor bolt and a nut planted in a housing, and a test device is attached to the anchor bolt to inject a leakage confirmation sample. Water performance confirmation method. The method for confirming the water stoppage performance of the joint water stop member according to claim 9, wherein the nut of the fixing tool is removed, the test device is attached to the anchor bolt, and the leak check sample is injected. The fixing tool is composed of an anchor bolt and a nut and a pressure plate of a joint water-stopping member that are implanted in the housing, and a test device is attached to the anchor bolt and a leakage confirmation sample is injected through the pressure plate. The water stop performance confirmation method of the joint part water stop member according to claim 8. The method for confirming the water stoppage performance of the joint water stop member according to claim 11, wherein the nut of the fixing tool is removed, the test device is attached to the anchor bolt, and the leak check sample is injected. The water stop performance confirmation method according to claim 11, wherein a hole communicating with the anchor bolt is provided in the pressing plate. Connected to the leakage confirmation sample supply unit to receive the supply of the leakage confirmation sample, and cover the fixing member of the joint water stop member to close the fixing member, and to form a gap in the outer tube The test apparatus used for the water stop performance confirmation method according to claim 2, comprising a middle pipe provided with a screw hole screwed with an anchor bolt of the fixing device provided by a coupling member.

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