CN212742654U - Post-construction anchor cable prestress sensor mounting system - Google Patents
Post-construction anchor cable prestress sensor mounting system Download PDFInfo
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- CN212742654U CN212742654U CN202020363282.2U CN202020363282U CN212742654U CN 212742654 U CN212742654 U CN 212742654U CN 202020363282 U CN202020363282 U CN 202020363282U CN 212742654 U CN212742654 U CN 212742654U
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Abstract
The utility model relates to an anchor cable fastening technical field, more specifically relates to a post-construction anchor cable prestress sensor mounting system, which comprises an existing anchor cable, an original anchorage device, a sensor, a lengthened anchor cable, a connecting mechanism and a force application device; the sensor, the connecting mechanism and the force application device are sequentially arranged along the original anchor, the existing anchor cable is connected with the connecting mechanism through the original anchor, and the lengthened anchor cable is connected with the force application device through the connecting mechanism. The utility model discloses a can realize carrying out long-term monitoring to the anchor stress of anchor rope, can save artifical anchor stress test's cost, the utility model discloses compensate the blank that the unable long-term monitoring of anchor rope behind the worker, data have the continuity, can reflect the regularity of ground tackle anchor stress variation, realized the automation of anchor rope prestressing force monitoring, can set up anchor rope prestressing force early warning value.
Description
Technical Field
The utility model relates to an anchor rope fastening technical field, more specifically relates to an anchor rope prestressing force sensor mounting system behind worker.
Background
At present, a prestressed anchor cable is a common supporting method for slope supporting, and prestress is applied to a slope through the anchor cable. The prestress applied through the anchor cable can obviously improve the stress state of the rock-soil body on the surface of the side slope on the one hand and improve the strength of the rock-soil body on the surface of the side slope, and on the other hand, the rock-soil body on the surface of the side slope and the internal rock-soil body can be connected into a whole, so that the integrity of the side slope is enhanced, the occurrence of a sliding body is avoided, and the key for realizing the purposes is to ensure the sufficient prestress. In engineering construction, after the anchor cable prestress is applied in place, the tail part of the anchor cable is cut off and sealed in a concrete pier according to design requirements, so that the anchor cable is prevented from rusting and the attractiveness of the engineering is ensured.
The prestressed anchor cable is widely applied to anchoring engineering, and the prestress under the anchor cable anchor is mainly measured by an anchor cable holding force test and an anchor cable stress sensor. The anchor cable stress sensor is generally arranged at the bottom of the anchor device during anchor cable tensioning construction; the anchor holding force test is used for detecting the stress under the anchor, and the stress is generally longer at the exposed section of the anchor rope and is detected before concrete anchor sealing is carried out. The anchor cable holding force test is generally only used for determining the stress state of the anchor cable during detection, and long-term monitoring cannot be carried out. For the prestressed anchor cable constructed in the early stage, due to the reasons of insufficient monitoring condition limitation and attention degree and the like, an anchor cable stress sensor is not installed, so that great difficulty is caused in monitoring the prestress of the anchor cable after construction.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is not enough to aim at overcoming above-mentioned prior art at least, provides an anchor rope prestressing force sensor and method behind the worker, can monitor anchor rope prestressing force for a long time, ensures the safe and reliable of anchor engineering.
The technical proposal adopted by the utility model is that,
a post-construction anchor cable prestress sensor mounting system is used for mounting a post-construction anchor cable prestress sensor and comprises an existing anchor cable, an original anchor device, a sensor, a lengthened anchor cable, a connecting mechanism and a force application device; the sensor, the connecting mechanism and the force application device are sequentially arranged along the original anchor, the existing anchor cable is connected with the connecting mechanism through the original anchor, and the lengthened anchor cable is connected with the force application device through the connecting mechanism.
The device further comprises a supporting piece, wherein the supporting piece is a supporting steel sleeve with a notch at the bottom of the side wall and is arranged outside the original anchorage device, the connecting mechanism and the sensor, one end of the supporting piece is pressed against the structural surface, and the force application device is arranged at the other end of the supporting piece; the existing anchor cable and the lengthened anchor cable are connected through a connecting mechanism, and the sensor is arranged between the original anchor device and the connecting mechanism.
Furthermore, the connecting mechanism comprises an upper connecting piece and a lower connecting piece, and the supporting piece is sleeved outside the original anchorage device, the upper connecting piece, the lower connecting piece and the sensor; a sensor, a lower connecting piece and an upper connecting piece are sequentially arranged along the original anchor, and the existing anchor cable penetrates through the original anchor, the sensor and the lower connecting piece; the lengthened anchor cable sequentially penetrates through the upper connecting piece and the force application device; one end of the sensor is pressed against the structural surface, and the other end of the sensor is pressed against the lower connecting piece. The connecting device is provided with a steel sleeve which is matched and connected with an upper connecting piece and a lower connecting piece, wherein the lower connecting piece can be a lower butt-joint anchorage device, and the upper connecting piece can be an upper butt-joint anchorage device.
Furthermore, the upper connecting piece and the lower connecting piece are connected through a steel sleeve, and the supporting steel sleeve, the steel sleeve and the sensor are concentrically arranged.
Furthermore, the force application device is a jack with a center through hole, the supporting steel sleeve is provided with a steel base plate with a hole in the middle, the bottom of the jack is supported on the steel base plate, the hole is opposite to the center through hole and is concentrically arranged with the steel sleeve, and one end of the lengthened anchor cable sequentially penetrates through the hole and the center through hole to be supported at the top of the jack.
Furthermore, the anchor cable fixing device also comprises an auxiliary part, and in order to ensure a good fixing effect, the auxiliary part is respectively matched with the original anchor tool and the lower connecting part to fix the existing anchor cable; the auxiliary piece and the upper connecting piece are matched with each other to fixedly connect the long anchor cable. The auxiliary piece can be a working clamping piece, and the working clamping piece is matched with the original anchorage device and the lower butt-joint anchorage device to fix the existing anchorage cable; the working clamping piece is matched with the upper butt anchorage device to fix the lengthened anchor cable.
Furthermore, a fastener is arranged for fixing the lengthened anchor cable, the fastener is installed at the other end of the force application device, the lengthened anchor cable penetrates through the force application device and the fastener, and the auxiliary piece is matched with the fastener to fix the lengthened anchor cable. The auxiliary member may be a tool jaw and the fastener may be a tension anchor.
Compared with the prior art, the beneficial effects of the utility model are that: through anchor rope butt joint, at former anchor external mounting sleeve formula sensor, can measure anchor rope bottom anchor stress to through signal conversion and data transmission and analytic system, realize carrying out long-term monitoring to the anchor stress of anchor rope, can save artifical anchor stress test's cost, only need once on-the-spot installation, improved monitoring efficiency greatly, save monitoring manpower and materials, the data collection is ageing strong, and can calculate the development trend of anchor rope anchor stress according to big data, discover that the anchor rope holds powerful abnormal change.
Drawings
Fig. 1 is a schematic view of the installation process structure of the present invention.
Fig. 2 is a schematic diagram of the installation process structure of the present invention.
Fig. 3 is a schematic diagram of the installation process structure of the present invention.
Fig. 4 is a schematic diagram of the installation process of the present invention.
Fig. 5 is a schematic view of the installation process structure of the present invention.
Fig. 6 is a schematic view of the installation process structure of the present invention.
Fig. 7 is a schematic structural view of the original anchor and the tension anchor of the present invention.
Fig. 8 is a schematic structural view of the upper and lower butt anchors of the present invention.
Fig. 9 is a schematic structural diagram of the steel sleeve of the present invention.
Fig. 10 is a schematic structural diagram of the supporting steel sleeve according to the present invention.
Fig. 11 is a schematic structural view of the steel tie plate of the present invention.
Fig. 12 is a schematic structural diagram of the pressure sensor according to the present invention.
Fig. 13 is a schematic structural diagram of the installation of the annular cushion block of the present invention.
Detailed Description
The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
The embodiment is a post-construction anchor cable prestress sensor installation system, and the content includes:
as shown in fig. 1 and 12, selecting an existing anchor cable 3 sleeved with an original anchor 2 after one work, removing a protection device outside the original anchor 2, cleaning a structural surface 1 around the original anchor 2, and sleeving a sleeve type sensor 14 outside the original anchor 2;
as shown in fig. 2, a lower butt-joint anchorage device 4 is added on the axis extension line of the original anchorage device, the lower butt-joint anchorage device 4 is connected with the existing anchor cable 3 through a working clamping piece 8, as shown in fig. 8, the outer side of the lower butt-joint anchorage device 4 is turned with threads 17, and 4 through holes 16 are arranged to facilitate the existing anchor cable 3 to pass through.
As shown in fig. 3, the existing anchor cable 3 is lengthened by using the connection mechanism, and the operation is that the lower butt-joint anchorage 4 with the outer side provided with the thread 17 is fixed on the existing anchor cable 3 through the working clamping piece 8, then the lower butt-joint anchorage 4 is connected with the steel sleeve 6 with the inner side provided with the thread at the lower end, and the upper butt-joint anchorage 5 is connected with the steel sleeve 6 with the inner side provided with the thread at the upper end.
As shown in fig. 4, one end of the lengthened anchor cable 7 is connected with the upper butt-joint anchorage 5 which is externally threaded through the working clamping piece 8, and finally the upper butt-joint anchorage 5 is connected with the steel sleeve 6 through threads. As shown in fig. 10, the supporting steel sleeve 9 is arranged to be sleeved outside the connecting mechanism and the original anchor 2, the side surface of the supporting steel sleeve is provided with a notch 18 formed by a semicircle and a rectangle, the upper side of the supporting steel sleeve is connected with the steel backing plate 10, and as shown in fig. 11, the middle of the steel backing plate 10 is provided with a round opening 19, so that the anchor cable 7 can conveniently extend to pass through the steel backing plate 10.
As shown in fig. 5, the elongated anchor cable 7 passes through the center-penetrating jack 11, one end of the elongated anchor cable 7 is connected with the tension anchor 12 through the tool clamping piece 13, and the tension anchor 12 is located above the center-penetrating jack 11.
As shown in fig. 6, 7, 9 and 13, the original anchorage device 2 and the sleeve-type sensor 14 are lifted by about 1.5cm by providing tension through the center-penetrating jack 11, the annular cushion block 20 is placed in the gap between the structural surface 1 and the sleeve-type sensor 14 from the notch 18 for supporting the steel sleeve 9, the sleeve-type sensor 14 is ensured to be pressed tightly under the lower butt anchorage device 4, the center-penetrating jack 11 is slowly unloaded, and the tool clamping piece 13, the tension anchorage device 12, the center-penetrating jack 11, the steel backing plate 10, the supporting steel sleeve 9, the extension anchor rope 7 and the steel sleeve 6 are sequentially arranged after unloading. The sleeve-type sensor 14 and the signal conversion and transmission device 15 are connected by signal lines, the time interval of the acquisition of the pre-stress data under the anchor is set, and the pre-stress data is uploaded to a network database.
The sleeve sensor 14 in this embodiment is a laboratory calibrated sensitive sensor; the annular cushion block 20, the anchor cable butt joint device, the steel base plate 10 and the support steel sleeve 9 are made of high-strength alloy steel; the center-penetrating jack 11 is a center-penetrating tensioning jack and is provided with a hydraulic oil pump; the signal conversion and transmission device 15 can perform 4G signal transmission. The anchor rope is 4 bundles of steel strands, and the ground tackle is 4 hole ground tackle, and this does not restrict the utility model discloses an application scope to 5 bundles of steel strands, 5 hole ground tackle etc.. The original anchorage device 2 and the upper and lower butt- joint anchorage devices 4 and 5 are all working anchorage devices, and generate reaction force with an anchor backing plate during tensioning, so that the working clamping pieces bear the tensile force of the steel strands, and the working clamping pieces are permanently left in the beam body after tensioning. The tensioning anchorage 12 is a tool anchorage, larger in radius and thicker than the working anchorage. During tensioning, the steel strand is tensioned by the clamping piece of the bearing tool, and the steel strand can be taken down after tensioning is finished and can be repeatedly used. Working clamping pieces: the tension anchor consists of two clamping pieces, and the clamping pieces and the working anchor are stressed together during tension, and are left on the anchor after tension is finished, so that the tension anchor is a permanent material. Tool clamping piece: generally, the tool anchor consists of three clamping pieces, the tool anchor and the clamping pieces are stressed together during tensioning, and the tool anchor can be taken down after tensioning is finished and can be repeatedly used.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (7)
1. A post-construction anchor cable prestress sensor mounting system is used for mounting a post-construction anchor cable prestress sensor and is characterized by comprising an existing anchor cable, an original anchorage device, a sensor, a lengthened anchor cable, a connecting mechanism, a force application device and a structural plane; a sensor, a connecting mechanism and a force application device are sequentially arranged along the original anchor, the existing anchor cable is connected with the connecting mechanism through the original anchor, and the lengthened anchor cable is connected with the force application device through the connecting mechanism; one end of the sensor is pressed against the structural surface, and the other end of the sensor is pressed against the connecting mechanism.
2. The post-construction anchor cable pre-stress sensor mounting system as claimed in claim 1, further comprising a support member, wherein the support member is a support steel sleeve with a notch at the bottom of the side wall, and is mounted outside the primary anchor, the connecting mechanism and the sensor, one end of the support member is pressed against the structural surface, and the force applying device is mounted at the other end of the support member; the existing anchor cable and the lengthened anchor cable are connected through a connecting mechanism, and the sensor is arranged between the original anchor device and the connecting mechanism.
3. The post-construction anchor cable pre-stress sensor mounting system as claimed in claim 2, wherein the connecting mechanism comprises an upper connecting member and a lower connecting member, and the supporting member is sleeved outside the original anchor, the upper connecting member, the lower connecting member and the sensor; a sensor, a lower connecting piece and an upper connecting piece are sequentially arranged along the original anchor, and the existing anchor cable penetrates through the original anchor, the sensor and the lower connecting piece; the lengthened anchor cable sequentially penetrates through the upper connecting piece and the force application device; the sensor is not pressed against one end of the structural surface and is pressed against the lower connecting piece.
4. The post-construction anchor cable pre-stress sensor mounting system as claimed in claim 3, wherein the upper connector and the lower connector are connected through a steel sleeve, and the supporting steel sleeve is concentrically arranged with the steel sleeve and the sensor.
5. The post-construction anchor cable pre-stress sensor mounting system as claimed in claim 4, wherein the force applying means is a jack having a central through hole, the supporting steel sleeve is provided with a steel backing plate with a central opening, the bottom of the jack is supported on the steel backing plate, the opening is opposite to the central through hole and is concentrically arranged with the steel sleeve, and one end of the extension anchor cable passes through the opening and the central through hole in sequence and is supported on the top of the jack.
6. The post-construction anchor cable pre-stress sensor mounting system as claimed in claim 5, further comprising an auxiliary member, wherein the auxiliary member is respectively matched with the original anchor and the lower connecting member to fix the existing anchor cable; the auxiliary piece and the upper connecting piece are matched with each other to fixedly connect the long anchor cable.
7. The post-construction anchor cable pre-stress sensor mounting system of claim 6, wherein a fastener is provided, the fastener is mounted above the force applying device, the extension anchor cable is inserted through the force applying device and the fastener, and the auxiliary member cooperates with the fastener to fix the extension anchor cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020363282.2U CN212742654U (en) | 2020-03-20 | 2020-03-20 | Post-construction anchor cable prestress sensor mounting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020363282.2U CN212742654U (en) | 2020-03-20 | 2020-03-20 | Post-construction anchor cable prestress sensor mounting system |
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| Publication Number | Publication Date |
|---|---|
| CN212742654U true CN212742654U (en) | 2021-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020363282.2U Active CN212742654U (en) | 2020-03-20 | 2020-03-20 | Post-construction anchor cable prestress sensor mounting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212742654U (en) |
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2020
- 2020-03-20 CN CN202020363282.2U patent/CN212742654U/en active Active
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