CN212427210U - UHPC-RC combination coincide assembled utility tunnel structure - Google Patents
UHPC-RC combination coincide assembled utility tunnel structure Download PDFInfo
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- CN212427210U CN212427210U CN202022201916.7U CN202022201916U CN212427210U CN 212427210 U CN212427210 U CN 212427210U CN 202022201916 U CN202022201916 U CN 202022201916U CN 212427210 U CN212427210 U CN 212427210U
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Abstract
The utility model relates to a UHPC-RC combination coincide assembled utility tunnel structure, including erect establish the UHPC-RC prefabricated double-deck superimposed sheet that plays the outside side wall effect in bed course both sides and play the UHPC prefabricated double-deck superimposed sheet of mid-board effect, be equipped with the prefabricated single-deck superimposed sheet of top UHPC between the upper end of the prefabricated double-deck superimposed sheet of UHPC and the UHPC-RC of both sides respectively, be equipped with the prefabricated single-deck superimposed sheet of bottom UHPC between the lower extreme of the prefabricated double-deck superimposed sheet of UHPC and the UHPC-RC of both sides's the lower extreme respectively. The utility model discloses a prefabricated superimposed sheet of multiple different grade type is as the structure template to cast-in-place self-compaction concrete can effectively alleviate the weight of local component, satisfies prefabricated component's hoist and mount and transportation requirement, improves the intensity and the durability of piping lane structure, prolongs the life cycle of piping lane.
Description
The technical field is as follows:
the utility model belongs to the technical field of the utility model, especially, relate to a UHPC-RC makes up coincide assembled utility tunnel structure.
Background art:
the utility tunnel is a public tunnel used for centrally laying municipal pipelines such as electric power, communication, radio and television, water supply, drainage, heating power, fuel gas and the like underground in a city. The problems of a road zipper and an aerial spider web can be effectively solved by the appearance of the underground comprehensive pipe gallery, the urban environment is improved, and the smooth traffic is ensured; the underground comprehensive pipe gallery reasonably utilizes and develops abundant urban underground space, saves land resources for urban construction, solves the contradiction in the urban construction process, has large design space and capacity at the beginning, can facilitate the scale expansion of various pipelines, and has harmony and sustainability; lay inside all kinds of pipelines in the piping lane, avoid the contact of all kinds of corrosive substance in pipeline and the soil body, prolong its life, carry out unified maintenance and management to it through real-time monitoring system, in time discover and investigate the potential safety hazard, and the piping lane has certain shock resistance, can ensure city lifeline's security and stability when taking place extreme natural disasters.
With the rapid development of the manufacturing industry and civil engineering in China, the factory production of prefabricated assembled structures also realizes rapid rise, and in the field of cast-in-place construction before the transportation industry and the construction industry, standard prefabricated component assembly construction is gradually formed, so that the work efficiency is improved, the quality is effectively ensured, the prefabricated assembled comprehensive pipe gallery is also greatly developed in the construction of recent years, and various different types of prefabricated pipe gallery structure forms are gradually formed.
However, the existing prefabricated pipe gallery structure mostly adopts the traditional sectional prefabricated form, and when the structure form of a multi-bin or a large section is met, the structure form is not favorable for transportation, hoisting construction and other operations due to large volume and weight.
The utility model has the following contents:
the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that a UHPC-RC makes up coincide assembled utility tunnel structure is provided, solves the not enough of utility tunnel in the aspect of prefabricated assembling of current prefabrication to and the various structural problems that intensity and durability are not enough to lead to in the use.
In order to realize the purpose, the utility model discloses a technical scheme is: the UHPC-RC combined overlapped assembly type comprehensive pipe gallery structure comprises UHPC-RC prefabricated double-layer composite slabs and UHPC prefabricated double-layer composite slabs, wherein the UHPC-RC prefabricated double-layer composite slabs are vertically arranged on two sides of a cushion layer and play a role of external side walls, the UHPC prefabricated double-layer composite slabs are vertically arranged between the UHPC-RC prefabricated double-layer composite slabs on the two sides and play a role of an intermediate wall, top UHPC prefabricated single-layer composite slabs are respectively arranged between the upper ends of the UHPC prefabricated double-layer composite slabs and the upper ends of the UHPC-RC prefabricated double-layer composite slabs on the two sides, and bottom UHPC prefabricated single-layer composite slabs are respectively arranged between the lower ends of the UHPC prefabricated double-layer composite slabs and the lower.
Furthermore, steel bar frameworks are arranged inside the UHPC-RC prefabricated double-layer composite slab, inside the UHPC prefabricated double-layer composite slab, on the outer side surface of the top UHPC prefabricated single-layer composite slab and on the outer side surface of the bottom UHPC prefabricated single-layer composite slab.
Further, the UHPC-RC prefabricated double-layer composite slab comprises an inner prefabricated slab made of ultra-high performance concrete and an outer prefabricated slab made of waterproof concrete, and a steel reinforcement framework is arranged between the inner prefabricated slab and the outer prefabricated slab.
Further, self-compacting concrete is adopted for pouring between the inner precast slab and the outer precast slab in the later period.
Furthermore, the UHPC prefabricated double-layer composite slab comprises two middle prefabricated slabs made of ultra-high performance concrete, and a steel reinforcement framework is arranged between the two middle prefabricated slabs.
Furthermore, self-compacting concrete is adopted for pouring between the two middle prefabricated plates in the later period.
Furthermore, the top UHPC prefabricated single-layer laminated slab comprises a top prefabricated slab made of ultra-high performance concrete, and a steel reinforcement framework is arranged on the outer side surface of the top prefabricated slab; the bottom UHPC prefabricated single-layer laminated slab comprises a bottom prefabricated slab made of ultra-high performance concrete, and a steel reinforcement framework is arranged on the outer side face of the bottom prefabricated slab.
Furthermore, the steel bar framework is composed of double layers of steel bar nets, a truss steel bar is adopted between the two layers of steel bar nets for position fixing, and the truss steel bar is located in the cast-in-place section.
Furthermore, the reinforcement cages of the UHPC-RC prefabricated double-layer composite slab, the UHPC prefabricated single-layer composite slab at the top and the UHPC prefabricated single-layer composite slab at the bottom are connected at the node intersections by welding through axillary corner reinforcements, and meanwhile, the reinforcement cages are connected in an anchoring manner longitudinally through pin joint reinforcements.
Compared with the prior art, the utility model discloses following effect has: the utility model discloses a prefabricated superimposed sheet of multiple different grade type is as the structure template to cast-in-place self-compaction concrete can effectively alleviate the weight of local component, satisfies prefabricated component's hoist and mount and transportation requirement, improves the intensity and the durability of piping lane structure, prolongs the life cycle of piping lane.
Description of the drawings:
fig. 1 is a schematic front sectional view of an embodiment of the present invention;
FIG. 2 is a reinforcement diagram of UHPC prefabricated single-layer composite plates at the top and bottom of a pipeline bin in an embodiment of the invention;
FIG. 3 is a reinforcement diagram of UHPC prefabricated single-layer composite slabs on the top and bottom of an electric power bin according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a UHPC-RC prefabricated double-layer composite slab according to an embodiment of the present invention;
fig. 5 is a schematic view showing a structure of a UHPC prefabricated double-layered composite panel in an embodiment of the present invention.
In the figure:
1-UHPC-RC prefabricated double-layer laminated slab; 2-UHPC prefabricated double-layer laminated slab; 3-inner precast slab; 4-outer precast slab; 5-truss reinforcing steel bars; 6-pin joint ribs; 7-axillary angle steel bars; 8-cushion layer; 9-casting self-compacting concrete in situ; 10-a steel reinforcement framework; 11-top UHPC prefabricated single ply laminate; 111-UHPC prefabricated single-layer laminated slab at the top of the pipeline bin; 112-UHPC prefabricated single-layer laminated slab at the top of the power bin; 12-bottom UHPC prefabricated single ply laminate; 121-UHPC prefabricated single-layer laminated slab at the bottom of the pipeline bin; 122-UHPC prefabricated single-layer laminated slab at the bottom of the power bin; 13-intermediate prefabricated slab; 14-top prefabricated slab; 15-bottom prefabricated panels.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in figures 1-5, the utility model relates to a UHPC-RC combined overlapped assembled comprehensive pipe gallery structure, is used for solving the defects of the prior prefabricated assembled comprehensive pipe gallery in the aspect of prefabricated assembly and various structural problems caused by the defects of insufficient strength and durability in the using process, the pipe gallery structure mainly comprises UHPC-RC prefabricated double-layer composite slabs 1 which are vertically arranged at two sides of a cushion layer 8 and play a role of an external side wall, UHPC prefabricated double-layer composite slabs 2 which are vertically arranged between the UHPC-RC prefabricated double-layer composite slabs 1 at two sides and play a role of an intermediate wall, a top UHPC prefabricated single-layer composite slab 11 is respectively arranged between the upper end of the UHPC prefabricated double-layer composite slab 2 and the upper ends of the UHPC-RC prefabricated double-layer composite slabs 1 on the two sides, and a bottom UHPC prefabricated single-layer composite slab 12 is respectively arranged between the lower end of the UHPC prefabricated double-layer composite slab 2 and the lower ends of the UHPC-RC prefabricated double-layer composite slabs 1 on the two sides; and the UHPC-RC prefabricated double- layer composite slabs 1, 2, 11 and 12 are poured by self-compacting concrete 9 at the later stage. The prefabricated composite slabs of various different types are adopted as structural formworks, self-compacting concrete is cast in place, a semi-prefabricated and semi-cast in place mode is adopted, and therefore the whole pipe gallery structure is formed. This pipe gallery structure can effectively alleviate the weight of local component, satisfies prefabricated component's hoist and mount and transportation requirement, improves the intensity and the durability of pipe gallery structure, prolongs the life cycle of pipe gallery, has higher price/performance ratio, has higher meaning and value in actual engineering.
In this embodiment, the inside of the UHPC-RC prefabricated double-layer composite slab 1, the inside of the UHPC prefabricated double-layer composite slab 2, the outer side surface of the top UHPC prefabricated single-layer composite slab 11, and the outer side surface of the bottom UHPC prefabricated single-layer composite slab 12 are all provided with a steel reinforcement framework 10. Preferably, the steel reinforcement framework 10 is composed of transverse steel reinforcements and longitudinal steel reinforcements, wherein part of the steel reinforcements are used as steel reinforcement meshes in the prefabricated laminated slab, and part of the steel reinforcements are used as steel reinforcement frameworks of the cast-in-situ layer, and the steel reinforcement frameworks are crossed in order, so that the cast-in-situ layer and the prefabricated slab can form an integral structure.
In this embodiment, the UHPC-RC prefabricated double-deck slab 1 includes an inner prefabricated slab 3 made of ultra-high performance concrete and an outer prefabricated slab 4 made of waterproof concrete, the height of the outer slab 3 is greater than that of the inner slab 4, and a steel reinforcement framework 10 is disposed between the inner prefabricated slab 3 and the outer prefabricated slab 4; self-compacting concrete 9 is poured between the inner precast slab 3 and the outer precast slab 4 in the later period to form a multilayer structure consisting of waterproof concrete, self-compacting concrete and UHPC ultrahigh-performance concrete, and the corrosion effect of underground water and underground harmful substances on the pipe gallery structure can be effectively prevented.
In this embodiment, the thickness of the inner precast slab 3 is reduced by about 50% compared with that of a common concrete slab, so that materials are saved, the weight of the precast composite slab is reduced, transportation and hoisting are facilitated, the inner space of a pipe gallery is enlarged, and the action of maintenance personnel or pipeline laying is facilitated.
In the embodiment, the UHPC prefabricated double-layer composite slab 2 comprises two intermediate prefabricated slabs 13 made of ultra-high performance concrete, the two intermediate prefabricated slabs 13 are arranged in parallel, and a steel reinforcement framework 10 is arranged between the two intermediate prefabricated slabs 13; and self-compacting concrete 9 is adopted for pouring between the two middle prefabricated plates in the later period.
In this embodiment, the top UHPC prefabricated single-layer composite slab 11 includes a top prefabricated slab 14 made of ultra-high performance concrete, and a steel reinforcement framework 10 is disposed on an outer side surface of the top prefabricated slab 14; the bottom UHPC prefabricated single-layer laminated slab 12 comprises a bottom prefabricated slab 15 made of ultra-high performance concrete, and a steel reinforcement framework 10 is arranged on the outer side surface of the bottom prefabricated slab 15. Preferably, in order to facilitate the engagement with the upper and lower ends of the UHPC-RC prefabricated double-layered composite panel 1, one end of the top prefabricated panel 14 adjacent to the UHPC-RC prefabricated double-layered composite panel 1 is bent inward, and one end of the bottom prefabricated panel 15 adjacent to the UHPC-RC prefabricated double-layered composite panel 1 is also bent inward.
In this embodiment, the steel bar frameworks 10 of the UHPC-RC prefabricated double-layer composite slab 1, the UHPC prefabricated double-layer composite slab 2, the top UHPC prefabricated single-layer composite slab 11 and the bottom UHPC prefabricated single-layer composite slab 12 are all composed of double-layer steel bar meshes, the positions of the two layers of steel bar meshes are fixed by using truss steel bars 5, and the truss steel bars 5 are located in a cast-in-place section, so that the adhesion between new and old concrete is effectively enhanced.
In this embodiment, the reinforcement cages 10 of the UHPC-RC prefabricated double-layer composite slab 1, the UHPC prefabricated double-layer composite slab 2, the top UHPC prefabricated single-layer composite slab 11, and the bottom UHPC prefabricated single-layer composite slab 12 are welded at the node intersections by the axillary corner reinforcements 7, and are anchored and connected longitudinally by the pin reinforcements 6, so as to ensure the integrity.
In this embodiment, the top UHPC prefabricated single-layer composite slab 11 includes a pipeline warehouse top UHPC prefabricated single-layer composite slab 111 and a power warehouse top UHPC prefabricated single-layer composite slab 112, and the bottom UHPC prefabricated single-layer composite slab 12 includes a pipeline warehouse bottom UHPC prefabricated single-layer composite slab 121 and a power warehouse bottom UHPC prefabricated single-layer composite slab 122. The UHPC-RC prefabricated double-layer composite slab 1, the UHPC prefabricated double-layer composite slab 2, the UHPC prefabricated single-layer composite slab 111 at the top of the pipeline bin and the UHPC prefabricated single-layer composite slab 121 at the bottom of the pipeline bin on one side are encircled into a pipeline bin; and the UHPC-RC prefabricated double-layer composite slab 1, the UHPC prefabricated double-layer composite slab 2, the UHPC prefabricated single-layer composite slab 112 at the top of the power cabin and the UHPC prefabricated single-layer composite slab 122 at the bottom of the power cabin on the other side enclose the power cabin.
The utility model has the advantages that:
(1) the prefabricated plates on the inner side of the pipe gallery structure are made of UHPC (ultra high performance concrete), so that the prefabricated plates have the advantages of high strength, good durability, certain waterproof property and strong anti-explosion capability;
(2) the light prefabricated laminated slab is used as a template, self-compacting concrete is cast in place, the self-weight requirement of the structure is met while the structure is optimized, and the anti-floating capacity of the structure is ensured;
(3) adopt the prefabricated superimposed sheet of multiple different grade type as the structure template to cast-in-place self-compaction concrete can effectively alleviate the weight of local component, satisfies prefabricated component's hoist and mount and transportation requirement, improves the intensity and the durability of piping lane structure, prolongs the life-cycle of piping lane, has higher price/performance ratio, has higher meaning and value in actual engineering.
In this embodiment, the construction process includes the following steps:
(1) respectively prefabricating a UHPC-RC prefabricated double-layer composite slab, a UHPC prefabricated double-layer composite slab, a top UHPC prefabricated single-layer composite slab and a bottom UHPC prefabricated single-layer composite slab according to different parts of the pipe gallery in a factory;
(2) pouring the cushion layer, and erecting a bottom UHPC prefabricated single-layer composite slab, an UHPC-RC prefabricated double-layer composite slab, an UHPC prefabricated double-layer composite slab and a top UHPC prefabricated single-layer composite slab to form a template; meanwhile, the crossed position of the steel bar framework is welded and fixed by using the axillary angle steel bar, and the anchoring connection is carried out longitudinally through a pin joint steel bar;
(3) pouring the self-compacting concrete to the erected UHPC-RC prefabricated double-layer composite slab, the UHPC prefabricated single-layer composite slab at the bottom and the UHPC prefabricated single-layer composite slab at the top, and vibrating;
(4) and pouring is finished when the top position of the UHPC-RC prefabricated double-layer composite slab is poured to form a pipe gallery structure.
It should be noted that; RC is the existing waterproof concrete; the material used by UHPC (ultra high performance concrete) is different from ordinary concrete, and the composition material mainly comprises cement; fine sand with good gradation; finely grinding mineral admixtures such as quartz sand powder, silica fume and the like; a high-efficiency water reducing agent. When higher requirements are placed on toughness, it is also necessary to incorporate fine steel fibers. It is a high-strength, high-toughness, low-porosity and ultrahigh-strength cement-based material. By increasing the fineness and activity of the components, coarse aggregate is not used, minimizing defects (voids and microcracks) within the material.
Relevant researches show that the compressive strength of the UHPC can reach more than 350MPa, the UHPC has very high strength, the structure has extremely low permeability, very high retest resistance and good wear resistance due to low water-to-glue ratio, although the unit price of the UHPC is higher economically and the single investment is larger, in practical engineering application, the UHPC can effectively reduce the volume of components, thereby reducing the consumption of concrete, few reinforcements can be arranged in some structures, even no reinforcement can be arranged, better structural performance can be ensured, and due to good durability, the service life of the structure is effectively prolonged, and the total economic benefit is very considerable from the cost of the whole life cycle. According to the characteristics of high strength, high toughness, high durability and the like of UHPC, the UHPC material can be effectively applied to the prefabricated assembled comprehensive pipe gallery.
The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (9)
1. The utility model provides a UHPC-RC combination coincide assembled utility tunnel structure which characterized in that: the composite floor slab comprises UHPC-RC prefabricated double-layer composite slabs and UHPC prefabricated double-layer composite slabs, wherein the UHPC-RC prefabricated double-layer composite slabs are vertically arranged on two sides of a cushion layer and play a role of external side walls, the UHPC prefabricated double-layer composite slabs are vertically arranged between the UHPC-RC prefabricated double-layer composite slabs on the two sides and play a role of a middle partition wall, top UHPC prefabricated single-layer composite slabs are respectively arranged between the upper ends of the UHPC prefabricated double-layer composite slabs and the UHPC-RC prefabricated double-layer composite slabs on the two sides, and bottom UHPC prefabricated single-layer composite slabs are respectively arranged between the lower ends of the UHPC prefabricated double-layer composite slabs.
2. The UHPC-RC combination stackup utility tunnel structure of claim 1, wherein: and steel bar frameworks are arranged inside the UHPC-RC prefabricated double-layer composite slab, inside the UHPC prefabricated double-layer composite slab, on the outer side surface of the top UHPC prefabricated single-layer composite slab and on the outer side surface of the bottom UHPC prefabricated single-layer composite slab.
3. The UHPC-RC combination stackup utility tunnel structure of claim 2, wherein: the UHPC-RC prefabricated double-layer composite slab comprises an inner side prefabricated slab made of ultra-high performance concrete and an outer side prefabricated slab made of waterproof concrete, and a steel reinforcement framework is arranged between the inner side prefabricated slab and the outer side prefabricated slab.
4. The UHPC-RC combination stackup utility tunnel structure of claim 3, wherein: and self-compacting concrete is adopted for pouring between the inner precast slab and the outer precast slab in the later period.
5. The UHPC-RC combination stackup utility tunnel structure of claim 2, wherein: the UHPC prefabricated double-layer composite slab comprises two middle prefabricated slabs made of ultra-high performance concrete, and a steel reinforcement framework is arranged between the two middle prefabricated slabs.
6. The UHPC-RC combination stackup utility tunnel structure of claim 5, wherein: and self-compacting concrete is adopted for pouring between the two middle prefabricated plates in the later period.
7. The UHPC-RC combination stackup utility tunnel structure of claim 2, wherein: the top UHPC prefabricated single-layer laminated slab comprises a top prefabricated slab made of ultra-high performance concrete, and a steel reinforcement framework is arranged on the outer side surface of the top prefabricated slab; the bottom UHPC prefabricated single-layer laminated slab comprises a bottom prefabricated slab made of ultra-high performance concrete, and a steel reinforcement framework is arranged on the outer side face of the bottom prefabricated slab.
8. The UHPC-RC combination stackup utility tunnel structure of claim 2, 3, 5 or 7, wherein: the steel bar framework is composed of double layers of steel bar nets, a truss steel bar is adopted between the two layers of steel bar nets for position fixing, and the truss steel bar is located in the cast-in-place section.
9. The UHPC-RC combination stackup utility tunnel structure of claim 2, wherein: the reinforcement cages of the UHPC-RC prefabricated double-layer composite slab, the UHPC prefabricated single-layer composite slab at the top and the UHPC prefabricated single-layer composite slab at the bottom are welded and connected at the node intersections through axillary corner reinforcements, and meanwhile, the reinforcement cages are anchored and connected longitudinally through pin joint reinforcements.
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| CN202022201916.7U CN212427210U (en) | 2020-09-30 | 2020-09-30 | UHPC-RC combination coincide assembled utility tunnel structure |
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| CN202022201916.7U CN212427210U (en) | 2020-09-30 | 2020-09-30 | UHPC-RC combination coincide assembled utility tunnel structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031027A (en) * | 2020-09-30 | 2020-12-04 | 福州大学 | UHPC-RC combined overlapped assembly type comprehensive pipe gallery structure and construction method thereof |
| CN113294175A (en) * | 2021-06-03 | 2021-08-24 | 中国建筑股份有限公司 | Construction method of tunnel secondary lining structure and tunnel secondary lining structure |
-
2020
- 2020-09-30 CN CN202022201916.7U patent/CN212427210U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031027A (en) * | 2020-09-30 | 2020-12-04 | 福州大学 | UHPC-RC combined overlapped assembly type comprehensive pipe gallery structure and construction method thereof |
| CN113294175A (en) * | 2021-06-03 | 2021-08-24 | 中国建筑股份有限公司 | Construction method of tunnel secondary lining structure and tunnel secondary lining structure |
| CN113294175B (en) * | 2021-06-03 | 2023-12-29 | 中国建筑股份有限公司 | Construction method of tunnel secondary lining structure and tunnel secondary lining structure |
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