CN114198118A - A kind of underground engineering node processing structure and construction method thereof - Google Patents
A kind of underground engineering node processing structure and construction method thereof Download PDFInfo
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- CN114198118A CN114198118A CN202111607032.4A CN202111607032A CN114198118A CN 114198118 A CN114198118 A CN 114198118A CN 202111607032 A CN202111607032 A CN 202111607032A CN 114198118 A CN114198118 A CN 114198118A
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- tenon
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- mortise
- waterproof
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000004873 anchoring Methods 0.000 claims description 26
- 239000004567 concrete Substances 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000004519 grease Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 18
- 239000011150 reinforced concrete Substances 0.000 abstract description 12
- 239000002689 soil Substances 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 3
- 230000002265 prevention Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/381—Setting apparatus or devices
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides an underground engineering node processing structure which comprises mortise and tenon units, wherein the mortise and tenon units are used for connecting adjacent segments, are arranged on one side of the segment connection position and are used for positioning the segment connection process; the reinforced concrete structure is arranged on the other side of the segment connection part; and the waterproof unit is matched with the mortise and tenon joint unit and is used for sealing the connection between the adjacent pipe pieces. The invention simplifies the connection construction between the pipe pieces through the tenon-and-mortise units, avoids the problems of wrong platforms and different space between the pipe pieces, causes construction difficulty, avoids the problems of different reserved spaces between adjacent reinforced concrete members, difficult node connection construction and tight connection of the adjacent pipe pieces, and plays a role of preliminary water resistance; the waterproof effect is further improved through the waterproof unit matched with the mortise and tenon joint unit.
Description
Technical Field
The invention relates to the technical field of duct piece connection, in particular to an underground engineering node processing structure and a construction method thereof.
Background
Along with the continuous development of urban underground space development, large underground space development is increasing day by day, and the mode of finally forming the large underground space by building a small underground space group and then carrying out space structure transformation is more feasible than the traditional underground excavation construction method. The whole underground structure is completed by structural reconstruction after each unit is built in a subsection manner, and all structural units are required to be combined before structural transformation. Waterproof treatment is required to be done in the structure conversion process, and simultaneously, the joint connection is completed through construction,
in the traditional method, grouting pipes are inserted into soil bodies around joints through segment preformed holes at the joints of all the subsection units for grouting, and the soil bodies at the joints are reinforced and water is stopped. The grouting water stop construction process is complex, the construction period is long, the waterproof effect is general, and the application range is small. Adopt to connect mechanical connection reinforcing bar between the adjacent reinforced concrete structure, cast-in-place concrete structure realizes structural connection, because adjacent tunnel of fractional structure jacking in-process is difficult to avoid forming the wrong platform, leads to the reinforced bar connection length to differ, is difficult to process, and it is less to reserve the interval between the adjacent reinforced concrete component, and the nodal connection construction difficulty.
A novel node processing method is needed, so that the waterproof effect is better, the node connection is more reliable, and the construction is more convenient.
Disclosure of Invention
Aiming at the technical problems, the invention provides an underground engineering node processing structure which is used for solving the problems of difficult node connection construction and poor waterproof effect in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a node processing structure for underground engineering comprises mortise and tenon units, a first locating unit and a second locating unit, wherein the mortise and tenon units are used for connecting adjacent segments, are arranged on one side of the segment connecting position and are used for locating the segment connecting process; the reinforced concrete structure is arranged on the other side of the segment connection part; and the waterproof unit is matched with the mortise and tenon joint unit and is used for sealing the connection between the adjacent pipe pieces. The structure simplifies the connection construction between the pipe pieces through the mortise and tenon units, avoids the difficulty in construction caused by staggered platforms and different distances between the pipe pieces, avoids the difficulty in joint connection construction caused by different reserved distances between adjacent reinforced concrete members, ensures that the adjacent pipe pieces are tightly connected, and plays a role in preliminary water prevention; the waterproof effect is further improved through the waterproof unit matched with the mortise and tenon joint unit.
Preferably, in order to facilitate the connection of adjacent pipe pieces, the mortise and tenon unit comprises a male tenon and a female tenon, and the male tenon and the female tenon are respectively connected on the adjacent pipe pieces.
Preferably, in order to make waterproof unit and tenon fourth of twelve earthly branches unit cooperation closely, the tenon is including inserting the joggle end of female tenon, is equipped with the recess on the joggle end, waterproof unit is including setting up the waterproof seal spare in the recess.
Preferably, in order to improve the waterproof effect, the waterproof sealing element is an inflatable waterproof element, and a filling port is arranged on the inflatable waterproof element and is connected with a filling pipeline.
Preferably, in order to improve the waterproof sealing effect of the mortise-tenon joint, sealing grease is arranged in the female tenon.
Preferably, in order to reinforce the node structure at the joint of the duct piece, the reinforced concrete structure comprises a combined steel bar piece and a concrete node formed by wrapping concrete on the combined steel bar piece, the combined steel bar piece comprises an anchoring piece and a pre-embedded rib pre-embedded and connected to the duct piece, and the pre-embedded rib is connected with the anchoring piece; the anchoring piece is of a T-shaped structure, and the T-shaped structure comprises an anchoring rib and an anchoring bolt connected to the end part of the anchoring rib; the embedded rib is connected with the anchoring piece through the sleeve.
Preferably, in order to improve the firmness and stability of the combined type steel bar piece, the combined type steel bar piece comprises a plurality of embedded bars and a plurality of anchoring pieces, and structural bars are connected between the embedded bars and/or the anchoring pieces.
Preferably, in order to strengthen the node, concrete is poured on the combined type steel bar element to form the concrete node.
Preferably, in order to realize permanent waterproofing, a water stop is pre-embedded in the duct piece, and the water stop passes through the joint of the duct piece and the concrete joint.
Preferably, in order to improve the permanent waterproof effect, an expansion water stop strip is arranged on the water stop strip, and the expansion water stop strip is positioned at the joint of the duct piece and the concrete joint.
Preferably, in order to facilitate the disassembly and assembly of the detachable supports, the detachable supports for supporting the duct pieces are further included, and the detachable supports and the adjacent duct pieces can be detachably connected.
A method of constructing an underground construction joint treatment structure according to any one of the preceding claims, comprising the steps of:
s1, prefabricating a duct piece, and arranging a pre-buried rib, a water stop, a pre-buried bolt for connecting a detachable support and a pre-buried connecting piece for connecting a male tenon or a female tenon on the duct piece;
s2, connecting the male tenon or the female tenon with the embedded connecting piece on the duct piece, and connecting the anchoring piece with the embedded rib;
s3, sequentially arranging the pipe pieces at corresponding positions in the underground space, wherein the pipe pieces with the female tenons facing to the outer sides are arranged firstly, the male tenons of the later-arranged pipe pieces are placed into the waterproof filling pieces, and the male tenons of the later-arranged pipe pieces are inserted into the female tenons of the earlier-arranged pipe pieces towards the inner sides to be subjected to mortise and tenon connection; a detachable support is arranged and is connected with the embedded bolt;
s4, inflating or grouting the inflatable waterproof part to enable the inflatable waterproof part to seal a gap between the mortise joint end of the male tenon and the female tenon after expansion;
s5, arranging an expansion water stop strip on the water stop belt, and arranging structural ribs between the embedded ribs and/or the anchoring parts;
s6, pouring concrete in a space surrounded by adjacent segments, the mortise and tenon units and the detachable supports to form concrete nodes;
s7, dismantling the detachable support.
The invention has the beneficial effects that:
1. the connection construction between the duct pieces is simplified through the mortise and tenon units, the construction difficulty caused by platform staggering and different space between the duct pieces is avoided, and the adjacent duct pieces are connected tightly; the reserved space between adjacent reinforced concrete members is prevented from being different in size, and the joint connection construction is difficult;
2. the temporary waterproof effect is improved through the waterproof unit matched with the mortise and tenon joint unit;
3. the waterproof sealing element seals the gap between the joggle joint end and the female tenon, so that the sealing and waterproof effects are achieved; the waterproof sealing piece is arranged in the groove, so that the waterproof structure can be prevented from being damaged by contacting with a soil body or a steel plate in the jacking process of the duct piece;
4. the waterproof sealing effect of the mortise-tenon joint is further improved by filling the gap between the male tenon and the female tenon with the sealing grease;
5. the node connection is realized through the anchor bolt, so that the construction speed is high;
6. the waterproof effect is better through pre-buried waterstop and the water-swelling rubber strip.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a segment, a mortise and tenon unit and a waterproof sealing element of the invention;
FIG. 3 is a schematic structural view of a segment, a mortise and tenon joint unit, a waterproof unit and a combined type steel bar piece;
FIG. 4 is a schematic view of the connection structure of the duct piece and the detachable support according to the present invention;
fig. 5 is a schematic structural view of the mortise and tenon unit and the concrete node of the invention.
In the figure: 1-pipe piece, 2-detachable support, 3-stress bar, 4-distribution bar, 5-male tenon, 6-wood tenon, 7-waterstop, 8-waterproof sealing element, 9-expansion waterstop, 10-sealing grease, 11-tenon-and-mortise embedded plate, 12-tenon-and-mortise embedded bar, 13-embedded bolt, 14-anchoring bolt, 15-embedded bar, 16-sleeve and 17-anchoring bar.
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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 to 5, a node processing structure of an underground engineering according to embodiment 1 of the present invention is used for connecting duct pieces 1 disposed in an underground space; the processing structure comprises a mortise and tenon joint unit, a reinforced concrete structure and a waterproof unit; the tenon-and-mortise joint units are arranged on the duct pieces 1 and used for connecting adjacent duct pieces 1, and the tenon-and-mortise joint units are arranged on one side of the joint of the duct pieces 1, so that a certain sealing effect is achieved, the connection process of the duct pieces 1 can be positioned, and dislocation among the duct pieces is avoided; the reinforced concrete structure is arranged on the other side of the joint of the duct piece 1, so that the effect of strengthening the underground engineering node is achieved, and the node connection is more reliable; the waterproof unit, waterproof unit and tenon fourth of twelve earthly branches unit cooperate and are used for sealing the connection between the adjacent section of jurisdiction 1 for water-proof effects is better. The structure simplifies the connection construction between the pipe pieces through the mortise and tenon units, avoids the problem that the construction is difficult due to staggered platforms and different distances between the pipe pieces, enables the adjacent pipe pieces to be tightly connected and plays a role in preliminary water prevention; the waterproof effect is further improved through the waterproof unit matched with the mortise and tenon joint unit.
Preferably, as shown in fig. 2, the mortise and tenon unit comprises a male tenon 5 and a female tenon 6 which are matched, and the male tenon 5 and the female tenon 6 are respectively connected to the adjacent segments 1. Specifically, the male tenon 5 and the female tenon 6 are respectively connected to the side surface of the segment 1 through embedded connectors. In the embodiment, a male tenon or a female tenon is arranged on one side of the duct piece positioned at the end part, a male tenon 5 is arranged on one side of the duct piece 1 positioned in the middle, and a female tenon 6 is arranged on the other side of the duct piece positioned in the middle; the embedded connecting piece comprises an embedded plate 11 exposed out of the side surface of the duct piece 1 and an embedded plate anchoring rib 12 positioned in the duct piece 1, and the embedded plate 11 is fixedly connected to the end part of the embedded plate anchoring rib 12; and, public tenon 5 and female tenon 6 are connected with pre-buried connecting piece through bearing structure respectively for make form certain and the unified interval of size between section of jurisdiction 1, be convenient for the node construction. When the duct pieces are assembled, the adjacent duct pieces 1 are inserted into the male tenon 5 through the female tenon 6 for primary connection, the connection mode plays a positioning role, and avoids the condition that staggered platforms are formed between the adjacent duct pieces 1, so that the connecting lengths of reinforcing steel bars are different and the processing is difficult; and the problems that reserved intervals between adjacent reinforced concrete members are different in size and the joint connection construction is difficult are avoided.
Preferably, as shown in fig. 2, the male tenon 5 comprises a tenon end inserted into the female tenon 6, the tenon end is fixed on the side surface of the segment 1 through a support member, a groove is formed on one side of the tenon end facing the female tenon 6, and the waterproof unit comprises a waterproof sealing member 8 arranged in the groove. In this embodiment, the joggle ends are in a U-shaped structure. After the joggle end is inserted into the female tenon 6, the waterproof sealing piece 8 is pressed to the inner wall of the female tenon 6, and the waterproof sealing piece 8 seals a gap between the joggle end and the female tenon 6 to play a role of sealing and waterproofing; and waterproof sealing member 8 sets up in the recess, can avoid section of jurisdiction top to advance in-process waterproof construction and soil body or steel sheet contact by destruction.
Preferably, as shown in fig. 2, a sealing grease 10 is arranged in the female tenon 6. After the tenon joint end is inserted into the female tenon 6, the sealing grease 10 is filled in the gap between the male tenon and the female tenon, so that the waterproof sealing effect of the tenon-and-mortise connection is further improved.
Preferably, as shown in fig. 3, the reinforced concrete structure includes that combination formula reinforcing bar spare and parcel form the concrete node on combination formula reinforcing bar spare, combination formula reinforcing bar spare includes anchor assembly and pre-buried muscle 15 of pre-buried connection on section of jurisdiction 1, and pre-buried muscle 15 partly is pre-buried in section of jurisdiction 1, another part exposes section of jurisdiction 1 side and lies in the node, and pre-buried muscle 15 is connected with anchor assembly.
Preferably, as shown in fig. 3, in the present embodiment, the anchor is a "T" shaped structure, the "T" shaped structure includes an anchor rib 17 and an anchor bolt 14 connected to an end of the anchor rib 17, and the anchor rib 17 and the anchor bolt 14 may be connected vertically or at an acute angle. In other embodiments, the anchoring member may have other letter configurations or a cross-shaped configuration. The anchor bolts 14 are adopted to realize the connection of the node steel bars, and the construction speed is high. The embedded ribs 15 are connected to the anchor by sleeves 16. In this embodiment, the end of the embedded rib 15 is connected to the sleeve 16, and the other end of the sleeve 16 is connected to the end of the anchoring rib 17 far away from the anchoring bolt 14.
Preferably, as shown in fig. 5, the combined type steel bar member includes a plurality of embedded bars 15 and a plurality of anchoring members, and a structural bar is connected between the embedded bars 15 and/or the anchoring members. The structural ribs comprise stress ribs 3 and distribution ribs 4, and the stress ribs 3 and the distribution ribs 4 are respectively transversely and longitudinally connected between the embedded ribs 15 or the anchoring ribs 17.
Preferably, as shown in fig. 1 and 4, the node treatment structure further comprises a detachable support 2 for supporting the tube sheet 1, wherein the detachable support 2 is located below the node, and the detachable support 2 is detachably connected with two adjacent tube sheets 1. In this embodiment, can dismantle support 2 and section of jurisdiction 1 bolted connection, be equipped with buried bolt 13 in section of jurisdiction 1 relevant position in the prefabricated in-process of section of jurisdiction.
Example 2, which is different from example 1 in that a water stop 7 is embedded in the duct piece 1, and the water stop 7 passes through the joint of the duct piece 1 and the concrete joint, as shown in fig. 3 and 5. Specifically, the waterstop 7 is arranged in the middle of the side face of the duct piece 1, namely, in the middle of the position close to the adjacent duct piece, one part of the waterstop 7 is positioned in the duct piece 1, and the other part of the waterstop is exposed out of the duct piece 1. In this embodiment, the water stop 7 is provided approximately perpendicular to the side surface of the duct piece 1.
Example 3, which differs from example 2 in that an expansion waterstop 9 is provided on the waterstop 7, and the expansion waterstop 9 is located at the joint of the segment 1 and the concrete joint, as shown in fig. 3 and 5. The pre-buried stagnant water steel sheet adds water-swelling rubber strip water-proof effects is better.
Example 4 differs from example 3 in that the waterproof seal 8 is an inflatable waterproof member, and that the end of the inflatable waterproof member is provided with a filling port to which a filling pipe (not shown) is connected for filling, as shown in fig. 2.
Embodiment 5, a construction method of an underground engineering node processing structure, includes the steps of:
s1, prefabricating a segment 1, and embedding a pre-embedded rib 15, a water stop 7, a pre-embedded bolt 13 for connecting a detachable support 2 and a pre-embedded connecting piece for connecting a male tenon 5 or a female tenon 6 at corresponding positions of the segment 1 in the prefabricating process;
s2, respectively connecting the male tenon 5 or the female tenon 6 with the embedded connecting piece on the duct piece 1, wherein the male tenon 5 or the female tenon 6 are respectively connected with the supporting structure, the supporting structure and the embedded connecting piece are two, and the anchoring piece is connected with the embedded rib 15 through the sleeve 16, and in the embodiment, the connecting modes in the step are welding;
s3, sequentially arranging the duct piece 1 at corresponding positions in an underground space, wherein the duct piece (1) with the female tenon 6 facing outwards is arranged firstly, after the groove of the male tenon 5 of the duct piece 1 arranged later is placed into the waterproof part capable of being filled, the tenon joint end of the male tenon 5 of the duct piece 1 arranged later is inwards inserted into the female tenon 6 of the duct piece 1 arranged earlier for tenon-and-mortise connection, and the sealing grease 10 fills the gap between the male tenon 5 and the female tenon 6; the duct piece is arranged, the detachable support 2 is arranged, and the detachable support 2 is connected with the embedded bolt 13 in the arranging process to play a role in supporting the duct piece 1;
s4, inflating or grouting the inflatable waterproof part to enable the inflatable waterproof part to seal a gap between the mortise joint end of the male tenon 5 and the female tenon 6 after expansion;
s5, arranging expansion water stop strips 9 on the water stop belts 7 and close to the side faces of the pipe pieces, and connecting and arranging structural ribs between the embedded ribs 15 and/or the anchoring pieces;
s6, pouring concrete in a space surrounded by the adjacent segments 1, the mortise and tenon units and the detachable supports 2 to form concrete nodes;
s7, repeating the steps of S3-S6 until the segment construction is finished, and dismantling the detachable support 2.
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111607032.4A CN114198118B (en) | 2021-12-25 | 2021-12-25 | A kind of underground engineering node processing structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111607032.4A CN114198118B (en) | 2021-12-25 | 2021-12-25 | A kind of underground engineering node processing structure and construction method thereof |
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| CN114198118A true CN114198118A (en) | 2022-03-18 |
| CN114198118B CN114198118B (en) | 2024-11-12 |
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| CN110608052A (en) * | 2019-10-22 | 2019-12-24 | 湘潭大学 | A tunnel segment based on high-performance cement-based composite material and its construction method |
| CN110805450A (en) * | 2019-10-29 | 2020-02-18 | 华中科技大学 | Segment structure with combined mortise-tenon joint and female-head locking joint connecting assembly |
| CN110805451A (en) * | 2019-10-29 | 2020-02-18 | 武汉市市政建设集团有限公司 | Segment structure with rigidly assembled mortise and male locking joint connection components |
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2021
- 2021-12-25 CN CN202111607032.4A patent/CN114198118B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0317220A1 (en) * | 1987-11-13 | 1989-05-24 | C.V. Buchan Limited | Tunnel linings |
| CN106801610A (en) * | 2017-03-13 | 2017-06-06 | 上海隧道工程有限公司 | Using layered construct section of jurisdiction block between jointing and using its connect method |
| CN107299689A (en) * | 2017-06-27 | 2017-10-27 | 上海市政工程设计研究总院（集团）有限公司 | A kind of monolithic concrete malformation seam waterproof sealing system and its construction method |
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| CN114198118B (en) | 2024-11-12 |
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