CN110847245B - Waterproof expansion joint structure of super-long underground structure and construction method thereof - Google Patents
Waterproof expansion joint structure of super-long underground structure and construction method thereof Download PDFInfo
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- CN110847245B CN110847245B CN201911074130.9A CN201911074130A CN110847245B CN 110847245 B CN110847245 B CN 110847245B CN 201911074130 A CN201911074130 A CN 201911074130A CN 110847245 B CN110847245 B CN 110847245B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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Abstract
The invention discloses a waterproof expansion joint structure of an ultra-long underground structure and a construction method thereof. According to the invention, the latch steel plates are respectively arranged on the end steel plates at two sides at intervals, the latch steel plates at two sides are mutually inserted in an intersecting manner and a telescopic space is reserved, when the ultra-long underground structure expands with heat and contracts with cold and deforms, the latch steel plates can mutually dislocate to offset the deformation of the ultra-long underground structure, so that the temperature stress is avoided, the formation of temperature cracks is avoided, meanwhile, a precipitation well and long-time precipitation are not required to be arranged like a post-pouring zone, and the cost is low.
Description
Technical Field
The invention relates to a concrete coupling beam structure, in particular to a waterproof expansion joint structure of an overlong underground structure.
Background
Because of the problems of security, moisture protection, light protection and the like, important collections in art museums or important storage spaces (such as a vault) and the like are often placed in underground spaces, and the design service life of the important underground structures is often 100 years due to the particularity and importance of the important underground structures. In addition, these structures must be dry due to their construction functional requirements.
The newly cast concrete shrinks during the hardening process, and the constructed structure expands when heated and shrinks when cooled. Most of the concrete hardening shrinkage will be completed in the first 1-2 months after construction, and the effect of temperature change on the structure is frequent. When the deformation thereof is restrained, temperature stress is generated inside the structure, and cracks may occur in the member in severe cases. Especially for some super-long underground structures, the temperature stress is larger, and the tensile strength of concrete is extremely low, so that the concrete can crack under slight tensile stress. In the underground space, underground water is often accompanied, and the underground water can infiltrate and damage objects after concrete cracking and waterproof coiled materials are aged. In addition, the existing waterproof coiled material is fresh and can ensure that the aging and the cracks do not occur within 100 years (within the designed service life). Once aging or cracking occurs, maintenance or replacement of the waterproof roll is required, and the construction process is very complicated.
The existing method for solving the problem is to arrange a post-cast strip, wherein the post-cast strip is a temporary construction joint reserved at the corresponding position of a foundation slab, a wall and a beam according to the design or construction specification requirement in order to prevent a structure from generating harmful cracks due to uneven self shrinkage in the building construction. However, the post-cast strip is arranged, well point precipitation must be kept until the main structure is shrunk and the post-cast strip is poured, and a great amount of capital is consumed for pumping precipitation wells and long-time precipitation.
The traditional expansion joint is the weak position of structure, has appeared the accident that the ship hit the decking, and the fracture department of decking is the position of expansion joint. It follows that the shear and bending resistance of the expansion joint itself and the anchoring of the expansion joint to the main structural concrete are important. Thus, improper positioning of the expansion joints can cause the materials in other locations to lose economy and even threaten the safety of the main structure.
Therefore, it is desired to solve the above problems.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a waterproof expansion joint structure of an overlong underground structure, which can ensure that concrete does not crack without pumping a precipitation well and long-time precipitation.
The second purpose of the invention is to provide a construction method of the waterproof expansion joint structure of the super-long underground structure.
The technical scheme is as follows: in order to achieve the purpose, the invention discloses a waterproof expansion joint structure of an ultra-long underground structure, which comprises two end steel plates respectively connected with main concrete structures on two sides, wherein the two end steel plates are provided with latch steel plates at intervals on the opposite side surfaces, the latch steel plates leave a telescopic space from the opposite side surfaces of the end steel plates, and the end parts of the latch steel plates in the other telescopic spaces except the top telescopic space are provided with profiled steel plates.
The top telescopic space and the bottom telescopic space are internally provided with rubber blocks in a compressed state, and a gap is reserved between the rubber block positioned in the bottom telescopic space and the profiled steel sheet in the telescopic space.
Preferably, a plurality of channel steels are arranged on the side face of the end steel plate facing the main concrete structure at intervals, and the channel steels are oppositely arranged by taking the horizontal center line of the end steel plate as the shaft limb back.
Furthermore, a plurality of lacing bars are arranged at intervals on the limb tip position of the channel steel.
And furthermore, an end anchoring part is arranged on the side surface of the end steel plate avoiding the channel steel and comprises an anchoring steel bar with one end arranged on the end steel plate and a conical anchoring body positioned at the other end of the anchoring steel bar.
And cast-in-place concrete connected with a main concrete structure into a whole is poured at the positions of the channel steel and the end anchoring parts.
The invention relates to a construction method of a waterproof expansion joint structure of an ultralong underground structure, which comprises the following steps:
(1) alternately fixing the left latch steel plate and the left profiled steel plate on the side surface of the left end steel plate at intervals in sequence;
(2) inserting the latch steel plate on the right side into the gap between the adjacent latch steel plates on the left side, and reserving a telescopic space; fixing the profiled steel plate on the right side at the end part of the left latch steel plate;
(3) fixedly connecting the end steel plate on the right side with the latch steel plate on the right side and the profiled steel plate on the right side, and reserving a telescopic space;
(4) compressing the rubber block and then placing the compressed rubber block into the telescopic spaces at the top and the bottom;
(5) arranging the lacing bars at the limb tip position of the channel steel at intervals;
(6) the steel plate side face of the end part is fixed with the channel steel provided with the lacing bars, and the channel steel is oppositely arranged by taking the horizontal central line of the end part steel plate as the back of a shaft limb;
(7) fixedly connecting the conical anchoring body with one end of the anchoring steel bar;
(8) the other end of the anchoring steel bar with the conical anchoring body is fixedly connected to the end steel plate;
(9) and the pouring concrete and the main concrete structures on the two sides are connected into a whole.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages:
(1) according to the invention, the latch steel plates are respectively arranged on the end steel plates at two sides at intervals, the latch steel plates at two sides are mutually inserted in an intersecting manner and a telescopic space is reserved, when the ultra-long underground structure expands with heat and contracts with cold and deforms, the latch steel plates can mutually dislocate to offset the deformation of the ultra-long underground structure, so that the temperature stress is avoided, the formation of temperature cracks is avoided, meanwhile, a precipitation well and long-time precipitation are not required to be arranged like a post-pouring zone, and the cost is low;
(2) the latch steel plates are contacted with each other under the action of external force to form normal stress, so that shearing force can be resisted; furthermore, the friction force formed by the positive stress can resist bending moment;
(3) the profiled steel sheets of each layer can effectively prevent water and play a role in stopping water;
(4) the profiled steel sheet can realize stretching due to the existence of rib height, is thin, and can realize compression easily when concrete expands;
(5) the rubber is compressed before being placed into the telescopic space of the latch steel plate, so that the phenomenon that the waterproof effect is influenced due to the fact that gaps are formed between the rubber and the end steel plate due to excessive concrete shrinkage is avoided;
(6) the channel steel can obviously increase the mechanical engaging force between the expansion joint and the concrete, and prevent the expansion joint from being pulled out of the concrete;
(7) according to the invention, the limb tip of the channel steel is easy to open when receiving bending moment outside a plane, and the batten strip can effectively prevent the outside deformation of the surface of the channel steel and increase the connection rigidity of the expansion joint and concrete;
(8) the conical anchoring body and the anchoring steel bar can further prevent the expansion joint from being pulled out of concrete, and the reliability of the structure is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic structural diagram of a channel steel and a lacing bar in the invention;
FIG. 3 is a side view of the tapered anchor and anchoring bar of the present invention;
FIGS. 4(a) to 4(j) are schematic views showing the steps of the construction method of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As shown in fig. 1, the waterproof expansion joint structure of the ultra-long underground structure comprises an end steel plate 1, a latch steel plate 2, a profiled steel plate 4, a rubber block 5, a channel steel 6, a batten strip 7, an anchoring steel bar 8 and a conical anchoring body 9.
As shown in figure 2, a plurality of channel steels 6 are arranged towards the side face of an end steel plate of a main concrete structure at intervals, the channel steels are arranged oppositely by taking the horizontal center line of the end steel plate as the back of a shaft limb, a plurality of lacing strips 7 are arranged at intervals on the limb tip positions of the channel steels 6, and the lacing strips are arranged at intervals of 200-500 mm. An end anchoring part is arranged on the side surface of the end steel plate avoiding the channel steel, and comprises an anchoring steel bar 8 with one end arranged on the end steel plate and a conical anchoring body 9 positioned at the other end of the anchoring steel bar, as shown in figure 3. Cast-in-place concrete 10 connected with the main concrete structure into a whole is poured at the positions of the channel steel 6 and the end anchoring parts, and the end steel plate 1 is fixedly connected with the main concrete structures on two sides. The channel steel can obviously increase the mechanical engaging force between the expansion joint and the concrete and prevent the expansion joint from being pulled out of the concrete.
The two end steel plates 1 are provided with latch steel plates 2 on the opposite side surfaces at intervals, and the profiled steel plates on each layer can effectively prevent water and play a role in stopping water. The side face of the end steel plate opposite to the latch steel plate 2 is provided with a telescopic space 3, and the end part of the latch steel plate in the other telescopic spaces except the top telescopic space is provided with a profiled steel plate 4. The rubber of the invention is compressed in advance before being placed into the telescopic space of the latch steel plate, so that the phenomenon that the gap is formed between the rubber and the end steel plate due to excessive concrete shrinkage to influence the waterproof effect is prevented. According to the invention, the latch steel plates are respectively arranged on the end steel plates at two sides at intervals, the latch steel plates at two sides are mutually inserted in an intersecting manner and a telescopic space is reserved, when the ultra-long underground structure expands with heat and contracts with cold and deforms, the latch steel plates can mutually dislocate to offset the deformation of the ultra-long underground structure, so that the temperature stress is avoided, the formation of temperature cracks is avoided, meanwhile, a precipitation well and long-time precipitation are not required to be arranged like a post-pouring zone, and the cost is low; the latch steel plates are contacted with each other under the action of external force to form normal stress, so that shearing force can be resisted; furthermore, the frictional forces created by the positive stresses can resist bending moments.
The invention relates to a construction method of a waterproof expansion joint structure of an ultralong underground structure, which comprises the following steps:
(1) alternately welding the left latch steel plate 2 and the left profiled steel plate 4 to the side surface of the left end steel plate 1 at intervals in sequence, as shown in fig. 4(a) and 4 (b);
(2) inserting the right latch steel plate 2 into the gap between the adjacent left latch steel plates 2, and reserving a telescopic space 3; then welding the right profiled steel sheet 4 to the end of the left latch steel sheet 2, as shown in fig. 4 (c);
(3) fixedly connecting the right end steel plate 1 with the right latch steel plate 2 and the right profiled steel plate 4, and reserving a telescopic space 3 as shown in fig. 4 (d);
(4) the rubber block 5 is compressed and then placed into the top and bottom telescopic spaces 3, as shown in fig. 4 (e);
(5) the lacing bars 7 are arranged at the limb tip positions of the channel steel 6 at intervals, as shown in fig. 4 (f);
(6) the steel plate 1 at the end part is fixed with the channel steel 6 provided with lacing bars, and the channel steel 6 is oppositely arranged by taking the horizontal central line of the steel plate at the end part as the shaft limb back, as shown in fig. 4 (g);
(7) fixedly connecting the conical anchoring body 9 with one end of the anchoring steel bar 8, as shown in fig. 4 (h);
(8) the other end of the anchoring steel bar 8 with the conical anchoring body is fixedly connected to the end steel plate 1, as shown in fig. 4 (i);
(9) and the cast concrete 10 is integrated with the main concrete structures on both sides, as shown in fig. 4 (j).
Claims (6)
1. The utility model provides a waterproof expansion joint structure of overlength underground structure which characterized in that: the steel plate structure comprises two end steel plates (1) which are respectively connected with main concrete structures on two sides, wherein the two end steel plates are provided with latch steel plates (2) at intervals on the opposite sides, a telescopic space (3) is reserved on the latch steel plate (2) away from the opposite side of the end steel plate, the end parts of the latch steel plates in other telescopic spaces except the top telescopic space are provided with profiled steel plates (4), and the profiled steel plates (4) are thin profiled steel plates with rib heights; the rubber blocks (5) in a compressed state are arranged in the top telescopic space and the bottom telescopic space, the rubber blocks located in the top telescopic space are full of the telescopic space, and a gap is reserved between the rubber blocks located in the bottom telescopic space and the profiled steel sheet in the telescopic space.
2. The waterproof expansion joint structure of an overlength underground structure of claim 1, wherein: the side surface of the end steel plate facing the main concrete structure is provided with a plurality of channel steels (6) at intervals, and the channel steels are oppositely arranged by taking the horizontal central line of the end steel plate as the shaft limb back.
3. The waterproof expansion joint structure of an overlength underground structure of claim 2, wherein: a plurality of lacing bars (7) are arranged at the limb tip position of the channel steel (6) at intervals.
4. The waterproof expansion joint structure of an overlength underground structure of claim 2, wherein: be provided with tip anchor assembly on the tip steel sheet side of avoiding the channel-section steel, this tip anchor assembly includes that one end sets up anchor reinforcing bar (8) on the tip steel sheet and is located toper anchor body (9) of the anchor reinforcing bar other end.
5. The waterproof expansion joint structure of an overlength underground structure of claim 4, wherein: cast-in-place concrete (10) connected with a main concrete structure into a whole is poured at the positions of the channel steel (6) and the end anchoring parts.
6. The construction method of a waterproof expansion joint structure of an ultra-long underground structure as claimed in any one of claims 1 to 5, comprising the steps of:
(1) the left latch steel plate (2) and the left profiled steel plate (4) are sequentially and alternately fixed on the side surface of the left end steel plate (1) at intervals;
(2) inserting the right latch steel plate (2) into the gap between the adjacent left latch steel plates (2), and reserving a telescopic space (3); then fixing the profiled steel sheet (4) on the right side at the end part of the left latch steel sheet (2);
(3) fixedly connecting the right end steel plate (1) with the right latch steel plate (2) and the right profiled steel plate (4), and reserving a telescopic space (3);
(4) the rubber block (5) is compressed and then placed into the telescopic spaces (3) at the top and the bottom;
(5) the lacing bars (7) are arranged at the limb tip position of the channel steel (6) at intervals;
(6) the steel plate (6) is arranged on the side surface of the end part steel plate (1) which is fixed by the steel channel (6) provided with the lacing bars, and the steel channel (6) is oppositely arranged by taking the horizontal central line of the end part steel plate as the shaft limb back;
(7) fixedly connecting the conical anchoring body (9) with one end of the anchoring steel bar (8);
(8) the other end of the anchoring steel bar (8) with the conical anchoring body is fixedly connected to the end steel plate (1);
(9) and the pouring concrete (10) is connected with the main concrete structures at the two sides into a whole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911074130.9A CN110847245B (en) | 2019-11-06 | 2019-11-06 | Waterproof expansion joint structure of super-long underground structure and construction method thereof |
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|---|---|---|---|
| CN201911074130.9A CN110847245B (en) | 2019-11-06 | 2019-11-06 | Waterproof expansion joint structure of super-long underground structure and construction method thereof |
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| CN110847245A CN110847245A (en) | 2020-02-28 |
| CN110847245B true CN110847245B (en) | 2021-09-03 |
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| CN112177179B (en) * | 2020-10-03 | 2021-09-24 | 中交四公局建筑工程有限公司 | Large integral underground space structure shrinkage crack control device and control method |
| CN116876574B (en) * | 2023-09-05 | 2023-12-05 | 广州市市政工程设计研究总院有限公司 | Waterproof expansion joint structure of overlength underground structure |
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| CN204266232U (en) * | 2014-11-26 | 2015-04-15 | 山东大学 | The waterproof treatment structure of pipe trench connecting sewing |
| CN106087726A (en) * | 2016-08-04 | 2016-11-09 | 安徽省金田建筑设计咨询有限责任公司 | Grate formula bridge expansion joint installation |
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