CN216008511U - Assembled tunnel reinforced structure - Google Patents
Assembled tunnel reinforced structure Download PDFInfo
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- CN216008511U CN216008511U CN202121964514.0U CN202121964514U CN216008511U CN 216008511 U CN216008511 U CN 216008511U CN 202121964514 U CN202121964514 U CN 202121964514U CN 216008511 U CN216008511 U CN 216008511U
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Abstract
The utility model relates to the field of tunnel maintenance and reinforcement, in particular to an assembled tunnel reinforcement structure; reinforced structure installs on existing secondary is built a liner, reinforced structure is for following the section of jurisdiction unit of tunnel cambered surface installation, and a plurality of section of jurisdiction units form single-row section of jurisdiction in the arc to the installation through spacing connecting steel plate and high-strength bolt group and encircle, and a plurality of single-row sections of jurisdiction are encircleed and are established ties through prestressing force spiral rib rod iron and be reinforced structure. The utility model realizes the reinforcement of the damaged tunnel by installing a series of standard prefabricated arch pipe sheet units made of longitudinal and arc assembled UHPC ultrahigh-performance concrete, and the pipe sheet units can realize factory standardized prefabricated production and assembly construction, thereby having important significance for improving the construction quality of tunnel reinforcement engineering, shortening the maintenance period and the like.
Description
Technical Field
The utility model relates to the field of tunnel maintenance and reinforcement, in particular to an assembly type tunnel reinforcing structure.
Background
With continuous operation of a large number of highway tunnels in the thirteen-five period, tunnel lining diseases caused by various reasons are gradually highlighted. According to relevant statistical data, the number of highway tunnels needing major repair in China is increased year by year, and the operation safety of the highway tunnels faces huge challenges. At present, the academic community obtains some research achievements in the aspect of tunnel lining disease improvement, and the engineering community also accumulates certain maintenance and reinforcement experiences, but is mainly limited to the adoption of the traditional common concrete reinforcement structure. In recent years, some places carry out effect tracking on tunnel lining defect maintenance in a province mode, and the problems that the maintenance effect of a traditional common concrete reinforced structure is not ideal, the reinforced structure cracks, the concrete is corroded and degraded, the limit of a tunnel building is invaded and the like frequently occur.
SUMMERY OF THE UTILITY MODEL
The utility model provides an assembly type tunnel reinforcing structure, which overcomes the technical defects in the existing operation highway damaged tunnel reinforcing. The reinforcement of the damaged tunnel is realized by installing a series of transverse and arc prefabricated arch pipe piece units made of assembled UHPC ultrahigh-performance concrete, and the pipe piece units can realize factory standardized prefabricated production and assembly construction, and have important significance for improving the construction quality of tunnel reinforcement engineering, shortening the maintenance period and the like.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides an assembled tunnel reinforced structure, reinforced structure installs on existing secondary lining 8, and reinforced structure is the section of jurisdiction unit along tunnel cambered surface installation, and a plurality of section of jurisdiction units form single-row section of jurisdiction in the arc to the installation through spacing connecting steel plate 13 and high-strength bolt group 14 and encircle, and a plurality of single-row section of jurisdiction encircles and establishes ties through prestressing force spiral rib steel bar 15 and be reinforced structure.
The segment units are standard prefabricated arch segment sleeving segment tube units made of UHPC ultrahigh-performance concrete.
The single-row segment arch formed by the segment units is divided into two types, namely a 1# single-row segment arch and a 2# single-row segment arch, wherein the 1# single-row segment arch consists of a first vault segment unit 1, a first right arch shoulder segment unit 2, a first left arch shoulder segment unit 3, a first right arch waist segment unit 4, a first left arch waist segment unit 5, a first right wall leg segment unit 6 and a first left wall leg segment unit 7; the No. 2 single-row segment arch is composed of a second arch top segment unit 1 ', a second right arch shoulder segment unit 2 ', a second left arch shoulder segment unit 3 ', a second right arch waist segment unit 4 ', a second left arch waist segment unit 5 ', a second right wall leg segment unit 6 ' and a second left wall leg segment unit 7 '.
The serial connection sequence of the No. 1 single-row segment arch and the No. 2 single-row segment arch is as follows: two groups of No. 2 single-row segment arches are arranged at two ends of the No. 1 single-row segment arches which are arranged in series.
The segment unit is provided with an arc cutting hole channel 9, is fixed on an existing secondary lining 8 through the combination of a limiting connecting steel plate 13 and a high-strength bolt group 14 and the insertion of the high-strength bolt group 14 behind the arc cutting hole channel 9, and realizes the installation between the arc directions of the segment unit and the fixation of the segment unit and the existing tunnel secondary lining.
The segment unit of the 1# single-row segment arch is provided with a transverse cutting hole passage 10, the segment unit of the 2# single-row segment arch is provided with a transverse cutting hole passage 10 and an anchor groove 12, and four groups of 1# single-row segment arches and two groups of 2# single-row segment arches are connected in series by inserting a prestressed spiral rib steel bar 15 into the transverse cutting hole passage 10 on each segment unit of the 1# and 2# single-row segment arches and anchoring the transverse cutting hole passage 10 in the anchor groove 12 on each unit of the 2# single-row segment arches.
And the segment unit 1 is provided with a slurry pressing hole 5.
The utility model has the beneficial effects that: 1. the duct piece unit is made of UHPC (ultra high performance concrete) and has excellent performances of high strength, high toughness, high durability and the like.
2. The utility model introduces the prestress reinforcing system into the field of tunnel maintenance and reinforcement engineering for the first time, and the prestress steel bar is creatively arranged along the longitudinal direction of the UHPC pipe piece unit to integrally apply longitudinal prestress to a basic reinforcing unit, thereby obviously increasing the longitudinal rigidity of a reinforcing structure and improving the integral bearing capacity.
3. The utility model gives full play to the mechanical property advantages of UHPC material, reduces the height of the cross section to 10cm, on one hand reduces the encroachment on the clearance limit of the existing tunnel to the maximum extent, on the other hand greatly reduces the self weight of the reinforced structure, and has high material utilization rate.
4. The utility model adopts four groups of No. 1 single-row segment arches and two groups of No. 2 single-row segment arches to form a basic reinforcing unit, completes the reinforcement of the existing two linings with the length of 12m on the whole plate, and ensures the deformation coordination between the annular construction joints of the new structure and the old structure.
5. According to the utility model, the high-strength anchor bolt group and the limiting steel plate are adopted to connect the duct piece units and the new and old structures, so that a superposed type sleeve arch reinforcing system is formed, and the uncoordinated deformation between the duct piece units and between the new and old structures is effectively weakened.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of an arc-mounted structure of a tube sheet unit;
FIG. 3 is a first dome segment unit configuration view I;
FIG. 4 is a second schematic structural view of a first dome tube sheet unit;
FIG. 5 is a first schematic view of the first right or left segment unit configuration;
FIG. 6 is a second schematic structural view of a first right or left segment unit;
FIG. 7 is a first schematic structural view of a first right haunch segment unit or a first left haunch segment unit;
FIG. 8 is a second schematic structural view of a first right haunch segment unit or a first left haunch segment unit;
FIG. 9 is a first schematic structural view of the first right or left leg segment unit;
FIG. 10 is a second schematic structural view of the first right leg segment unit or the first left leg segment unit;
FIG. 11 is a schematic structural view of a segment unit of a No. 1 single-row segment arch with prestressed spiral rib steel bars inserted therein;
FIG. 12 is a first dome tube sheet unit configuration view one;
FIG. 13 is a second structural view of a first dome tube sheet unit;
FIG. 14 is a first schematic structural view of a second right or left segment unit;
FIG. 15 is a second right or left segment unit configuration view II;
FIG. 16 is a first schematic structural view of a second right haunch segment unit or a second left haunch segment unit;
FIG. 17 is a second schematic structural view of a second right haunch segment unit or a second left haunch segment unit;
FIG. 18 is a first structural view of the second right or left leg segment unit;
FIG. 19 is a second schematic structural view of the second right leg segment unit or the second left leg segment unit;
FIG. 20 is a schematic view of a segment unit structure of a 2# single row segment arch with prestressed spiral rib steel bars inserted therein
Shown in the figure: the duct piece unit comprises a first vault duct piece unit 1, a first vault duct piece unit 1 ', a first right arch shoulder duct piece unit 2, a second right arch shoulder duct piece unit 2 ', a first left arch shoulder duct piece unit 3, a second left arch shoulder duct piece unit 3 ', a first right arch waist duct piece unit 4, a second right arch waist duct piece unit 4 ', a first left arch waist duct piece unit 5, a second left arch waist duct piece unit 5 ', a first right wall foot duct piece unit 6, a second right wall foot duct piece unit 6 ', a first left wall foot duct piece unit 7, a second left wall foot duct piece unit 7 ', an existing secondary lining 8, an arc-cut duct 9, a transverse-cut duct 10, a mud jacking hole 11, an anchor groove 12, a limiting connecting steel plate 13, a high-strength bolt group 14 and a prestress spiral rib steel bar 15.
Detailed Description
The technical scheme of the utility model is further explained by specific embodiments in the following with the accompanying drawings:
example 1
As shown in fig. 1 to 20, the utility model provides an assembly type tunnel reinforcing structure, and aims to provide an assembly type tunnel reinforcing system, which is formed by installing a plurality of tube sheet units in an arc direction and a transverse direction, and the specific structure is as follows.
The section of jurisdiction unit installation that the tunnel arc is to is two kinds of section of jurisdiction arches, is 1# single-row section of jurisdiction arch and 2# single-row section of jurisdiction arch respectively, and 1# single-row section of jurisdiction arch and 2# single-row section of jurisdiction arch are formed by seven section of jurisdiction unit installations, are respectively: the No. 1 single-row segment arch is composed of a first arch top segment unit 1, a first right arch shoulder segment unit 2, a first left arch shoulder segment unit 3, a first right arch waist segment unit 4, a first left arch waist segment unit 5, a first right wall leg segment unit 6 and a first left wall leg segment unit 7; the No. 2 single-row segment arch is composed of a second arch top segment unit 1 ', a second right arch shoulder segment unit 2 ', a second left arch shoulder segment unit 3 ', a second right arch waist segment unit 4 ', a second left arch waist segment unit 5 ', a second right wall leg segment unit 6 ' and a second left wall leg segment unit 7 '. Each structure that 1# list section of jurisdiction encircles and 2# list section of jurisdiction encircles is as shown in fig. 2 ~ 10 and fig. 12 ~ 19, along the tunnel arc to the mounting means do, all be provided with arc cut-off way 9 on the section of jurisdiction unit, two sets of high strength bolt group 14 are fixed on a spacing connecting steel plate 13, and peg graft in arc cut-off way 9 on two adjacent section of jurisdiction units respectively with two sets of high strength bolt group 14, and be fixed in on the existing secondary lining 8, realize the fixed of section of jurisdiction unit.
In the embodiment, four sets of No. 1 single-row segment arches and two sets of No. 2 single-row segment arches are transversely connected in series to form the transverse duct 10, and the transverse duct 10 and the anchor groove 12 are arranged on each segment unit of the No. 1 single-row segment arch and on the segment unit of the No. 2 single-row segment arch. During installation, a prestressed spiral rib steel bar 15 penetrates into an anchor groove 12 on a segment unit arched by 2# single-row segments, passes through a transverse cutting hole 10 on the segment unit arched by 2# single-row segments, sequentially passes through transverse cutting holes 10 on four groups of 1# single-row segments arched by tube segments, finally penetrates out of the transverse cutting holes 10 and the anchor groove 12 on the segment unit arched by another group of 2# single-row segments, and transversely connects the four groups of 1# single-row segments with the two groups of 2# single-row segments in series.
Meanwhile, each duct piece unit is provided with a grouting hole 5, and the grouting holes 5 are used for grouting and hoisting during installation.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides an assembled tunnel reinforced structure, reinforced structure installs on existing secondary is lined, its characterized in that: the reinforced structure is a duct piece unit installed along the arc surface of the tunnel, a plurality of duct piece units form a single-row duct piece arch in the arc direction through the installation of the limiting connecting steel plate and the high-strength bolt group, and the single-row duct piece arches are connected in series through prestressed spiral rib steel bars to form the reinforced structure.
2. The fabricated tunnel reinforcement structure of claim 1, wherein: and the segment units are standard prefabricated arch sheathing reinforcing segment units made of UHPC ultrahigh-performance concrete.
3. The fabricated tunnel reinforcement structure of claim 2, wherein: the single-row segment arch formed by the segment units is divided into two types, namely a 1# single-row segment arch and a 2# single-row segment arch, and the 1# single-row segment arch consists of a first arch top segment unit, a first right arch shoulder segment unit, a first left arch shoulder segment unit, a first right arch waist segment unit, a first left arch waist segment unit, a first right wall foot segment unit and a first left wall foot segment unit; the 2# single-row segment arch is formed by a second arch top segment unit, a second right arch shoulder segment unit, a second left arch shoulder segment unit, a second right arch waist segment unit, a second left arch waist segment unit, a second right wall leg segment unit and a second left wall leg segment unit.
4. The fabricated tunnel reinforcement structure of claim 3, wherein: the serial connection sequence of the No. 1 single-row segment arch and the No. 2 single-row segment arch is as follows: two groups of No. 2 single-row segment arches are arranged at two ends of the No. 1 single-row segment arches which are arranged in series.
5. The fabricated tunnel reinforcement structure of claim 4, wherein: the segment unit is provided with an arc cutting hole channel, is fixed on the existing secondary lining through the combination of a limiting connecting steel plate and a high-strength bolt group and the insertion of the high-strength bolt group in the arc cutting hole channel (9), and realizes the arc installation of the segment units and the fixation of the segment units and the existing tunnel secondary lining.
6. The fabricated tunnel reinforcement structure of claim 4, wherein: the segment unit of the 1# single-row segment arch is provided with a transverse cutting hole channel, the segment unit of the 2# single-row segment arch is provided with a transverse cutting hole channel and an anchor groove, and four groups of 1# single-row segment arches and two groups of 2# single-row segment arches are connected in series by inserting prestressed spiral rib steel rods into the transverse cutting hole channels of the 1# and 2# single-row segment arches and anchoring the transverse cutting hole channels in the 2# single-row segment arches in the anchor grooves in the 2# single-row segment arches.
7. The fabricated tunnel reinforcement structure of claim 6, wherein: and the segment unit is provided with a slurry pressing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121964514.0U CN216008511U (en) | 2021-08-20 | 2021-08-20 | Assembled tunnel reinforced structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121964514.0U CN216008511U (en) | 2021-08-20 | 2021-08-20 | Assembled tunnel reinforced structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216008511U true CN216008511U (en) | 2022-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121964514.0U Active CN216008511U (en) | 2021-08-20 | 2021-08-20 | Assembled tunnel reinforced structure |
Country Status (1)
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|---|---|
| CN (1) | CN216008511U (en) |
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2021
- 2021-08-20 CN CN202121964514.0U patent/CN216008511U/en active Active
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