CN209760060U - Culvert opening structure based on factory-like prefabricated box culvert - Google Patents
Culvert opening structure based on factory-like prefabricated box culvert Download PDFInfo
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- CN209760060U CN209760060U CN201920298223.9U CN201920298223U CN209760060U CN 209760060 U CN209760060 U CN 209760060U CN 201920298223 U CN201920298223 U CN 201920298223U CN 209760060 U CN209760060 U CN 209760060U
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Abstract
The utility model relates to a culvert through structure based on factory-like prefabricated box culverts, which comprises a plurality of prefabricated box culverts which are arranged on a foundation bed course and are arranged in the same direction as the culvert through grooves, and a plurality of prefabricated box culverts which are sequentially assembled in the groove grooves, wherein the prefabricated box culverts are cuboids with through middle parts; in the splicing seam between two adjacent prefabricated box culverts, the outer side of the bottom is filled with small stones, the inner side of the bottom is coated with cement mortar, the outer sides of the two sides and the top are filled with asphalt reinforcement, the inner side of the top is coated with cement mortar, and the middle gap is filled with clay. The box culvert section used by the culvert-dredging structure of the utility model has simple structure, fast factory prefabrication and low cost; during on-site splicing construction, the clamping grooves play an accurate positioning role, and the culvert sections are simple in connection mode, weak in speciality and fast in splicing. The utility model discloses an use and to shorten construction period effectively, reduce engineering cost, can also the guaranteed control engineering quality.
Description
Technical Field
The utility model relates to a culvert passageway construction technical field especially relates to a culvert leads to structure based on prefabricated box culvert of batch production.
Background
Culverts and passageways are an essential structure in the construction of highways, which traverse the roadbed of the highway and are used for draining water or passing small structures of people, livestock and vehicles. The culverts and the channels have the characteristics of large quantity and wide distribution on the highway, and the construction progress and the quality play a role in playing a great role in highway construction.
The traditional culvert and channel building, reconstruction, expansion and extension work mostly adopts a concrete cast-in-place construction method. The engineering quality control difficulty is high due to the dispersion of construction work points, the uneven construction level and other reasons, and the quality is not easy to guarantee in the cast-in-place and maintenance processes; in addition, the construction speed is slow and the construction period is often long under the influence of weather, material turnover period, concrete age and the like. Therefore, the new concepts of standardized design, factory prefabrication and assembly type installation are adopted, so that the engineering quality can be improved, the construction period is shortened, the engineering cost is reduced, and the land occupation and the environmental pollution are reduced.
the existing prefabricated box culvert is mainly connected by the culvert sections through prestress, annular steel bars and pin joint steel bars, prestress tension and welding of the annular steel bars and the pin joint steel bars are needed to be carried out on the culvert sections by sections after the culvert sections are assembled, and the connecting mode is complex, high in specificity and high in cost. In addition, the existing prefabricated box culvert is directly spliced on a plane basis on site, and due to the fact that the prefabricated box culvert is heavy, hoisting is troublesome, and once foundation pouring precision is not high, box culvert installation deviation and box culvert installation elevation are not consistent on site. It is necessary to correct the deviation and even lift it for reinstallation, which is time consuming and costly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a can pinpoint, assemble fast and lead to structure based on prefabricated box culvert of batch production is provided.
In order to solve the problems, the culvert communicating structure based on the factory-like prefabricated box culvert comprises a clamping groove which is arranged on a foundation cushion layer and is in the same direction as the culvert communicating structure, and a plurality of prefabricated box culverts which are sequentially assembled in the clamping groove are arranged at the bottoms of the clamping grooves, wherein the prefabricated box culverts are cuboids with through middle parts; the width of the clamping groove is matched with the length of the bottom of the prefabricated box culvert; in the splicing seam between two adjacent prefabricated box culverts, the outer side of the bottom is filled with small stones, the inner side of the bottom is coated with cement mortar, the outer sides of the two sides and the top are filled with asphalt reinforcement, the inner side of the top is coated with cement mortar, and the middle gap is filled with clay.
preferably, the width range of the splicing seam is 0.8-1.2 cm.
Preferably, the culvert is communicated with the channel structure through the channel structure, and the channel structure further comprises crack pouring mortar arranged between the outer side of the prefabricated box culvert and the clamping grooves.
Preferably, the outer side of the top of the prefabricated box culvert is provided with a hoisting hole for hoisting.
Preferably, the method further comprises the step of coating waterproof asphalt on the contact part of the outer wall of the whole culvert through structure and the filling soil after the prefabricated box culvert is spliced.
Compared with the prior art, the utility model has the following advantage:
1. In the utility model, the box culvert section used by the culvert-through structure is a cuboid with a through middle, the structure is simple, the factory prefabrication is fast, and the cost is low; when the splicing construction is carried out on site, the clamping grooves play a role in accurate positioning, the connection mode between the culvert sections is simple, the speciality is weak, and compared with the existing prestress connection mode and the connection of the annular steel bars and the pin joint steel bars, the procedures of prestress tension, welding between the annular steel bars and the pin joint steel bars and the like are omitted; furthermore, the utility model discloses it is whole closed frame construction to contain logical structure, has that the wholeness is good, anti ground subsides and the strong characteristics of seismic capacity. Therefore, the utility model discloses an use and to shorten construction period effectively, reduce engineering cost, can also the guaranteed control engineering quality.
Through field investigation: cast-in-place one section 3.0x2.5 (m) box culvert in scene needs 20 workdays on average, and cost 3616 yuan uses the utility model provides a structure is led to in the culvert, and the on-the-spot needs 7 workdays, cost 3285 yuan of assembling after the mill prefabrication. In contrast, the time is saved by 65%, and the manufacturing cost is reduced by 9.15%.
2. The utility model discloses in, the section is concentrated prefabricated in the mill to the box culvert festival, easily controlled quality, and hoist and mount convenience during the construction is little to environment and safety influence. The exposure time is short after the foundation pit is excavated, so that the safety risk is reduced, and the vegetation recovery is facilitated. The problem of traditional cast-in-place construction is solved by adopting a factory centralized prefabrication mode, so that the using amount of a traditional cast-in-place construction template is greatly reduced.
3. The utility model discloses an use and to shorten construction period greatly, reduced the pollution to the environment to a certain extent, accorded with the theory of present green design, green traffic. In particular, for the areas in the middle and western parts of China, the areas are wide, the highway construction has long mileage, the surface vegetation is sparse, the catchment areas are large, and the requirements of flood control and flood discharge determine that the highway construction in the areas has the characteristics of more distribution of the culvert-communication engineering and the proportion of the engineering quantity.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Figure 1 is the embodiment of the utility model provides a prefabricated box culvert installation schematic diagram.
Fig. 2 is the embodiment of the utility model provides a connect the schematic diagram between the prefabricated box culvert festival.
Fig. 3 is a schematic view of the culvert through structure outer wall waterproof measure provided by the embodiment of the utility model.
Figure 4 is the utility model discloses box culvert mill's prefabricated cross section that the embodiment provided.
In the figure: the concrete block comprises the following components, by weight, 1-an outer formwork, 2-an inner formwork, 3-a reinforcement cage, 4-concrete, 5-a shielding hoisting hole, 6-a prefabricated box culvert, 7-a clamping groove, 8-a foundation cushion, 9-crack pouring mortar, 10-asphalt reinforcement, 11-clay, 12-cement mortar, 13-small stones and 14-waterproof asphalt.
Detailed Description
referring to fig. 1-3, the embodiment of the utility model provides a culvert leads to structure based on prefabricated box culvert of batch production, it specifically includes establishes on basic bed course 8 and leads to the draw-in groove 7 that the syntropy was arranged with the culvert and the bottom establishes a plurality of prefabricated box culverts 6 of assembling in proper order in draw-in groove 7, prefabricated box culvert 6 is middle penetrating cuboid, the width of draw-in groove 7 suits with the bottom length of prefabricated box culvert 6, the concatenation seam width scope between two adjacent prefabricated box culverts 6 is 0.8 ~ 1.2cm, the outside of concatenation seam bottom is clogged by pea gravel 13, inboard is plastered with cement mortar 12, the outside of both sides and top is clogged by pitch reinforcement 10, inboard is plastered with cement mortar 12, middle space is clogged by clay 11.
Furthermore, the culvert communicating structure also comprises crack pouring mortar 9 arranged between the outer side of the prefabricated box culvert 6 and the clamping groove 7, so that the position of the box culvert is well fixed; and after the prefabricated box culvert 6 is spliced, the waterproof asphalt 14 which is arranged on the contact part of the outer wall of the whole culvert through structure and the filled soil is coated.
The outer side of the top of the prefabricated box culvert 6 is provided with a hoisting hole for hoisting.
the utility model discloses obtain extensive application on the projects such as melon and state to the new-built highway of Dunhuang, G309 golden cliff to river mouth highway reconstruction engineering, establish newly-built highway etc. in Gansu province, specifically select the structural style of four sides prefabricated box culvert as quick assembly box culvert in the application, its cross sectional dimension specification is clear width (H) x clear height (B) (m): 2.0x1.5, 2.0x2.0, 2.0x2.5, 3.0x3.0, 3.0x3.5, 4.0x3.0, 4.0x3.5 or 4.0x4.0, box roof thickness alpha is (m): 0.26, 0.30 or 0.30, 0.0 x3.5, 4.0x3.0, 4.0x4.0, box roof thickness alpha is 350.26, 0.30 or 0.0 x3.0, 7 x3.0 x4.0, the inside culvert roof thickness alpha is established (m): 0.26, 0.30, 0.23, 0.0.0.0.0.0.0.23 x 3.0.0.0.0.0.0.7 x3.
1. Factory prefabrication
Because the utility model discloses well box culvert is the batch production prefabrication, so saved processes such as the prefabrication place levels, sclerosis. The whole process of box culvert factory prefabrication is as follows: assembling templates → installing external molds, coating release agents → installing reinforcement cages on gantry cranes → installing internal templates → mixing concrete → pumping concrete to be touched → coating surfaces → steam curing → detaching molds, marking → transporting gantry cranes to storage areas → spraying curing → leaving factories.
specifically, referring to fig. 2, during prefabrication, an outer formwork 1, a steel reinforcement cage 3 of a box culvert and an inner formwork 2 are installed in place by means of a gantry crane in a factory, concrete is poured, after the strength of the concrete reaches 70%, a formwork is removed and marked, meanwhile, construction of a foundation cushion 8 and a clamping groove 7 of a culvert position is carried out on an assembly box culvert site, namely, the culvert position site is hardened, a gravel soil cushion layer with the thickness of 1 ~ 1.5m is manufactured on a position with poor geology, and then a C30 concrete clamping groove is formed in the hardened gravel soil cushion layer or the gravel soil cushion layer.
2. On-site splicing
After the box culvert is prefabricated in a factory, the prefabricated box culvert 6 is hoisted and transported to an assembling site, and the box culvert is assembled on the site.
(1) Box culvert positioning: the prefabricated box culvert 6 is hung into the clamping groove 7 according to the design size and the installation elevation, and the M30 mortar is used for processing the tank seam between the clamping groove 7 and the outer side of the box culvert after the box culvert is positioned.
(2) Splicing seam treatment: a1 cm splicing seam is reserved between each culvert section, and the relative seam is small because the splicing seam is 1 cm. In view of workability of construction: small stones, clay, M10 cement mortar and hot asphalt reinforcement are selected for filling.
Specifically, for the bottom of the 1cm splicing seam, filling small stones, then M10 cement mortar and plastering (15 cm), for the two sides and the outer side of the top of the splicing seam, filling asphalt reinforcement of about 1cm outside, then filling clay (64-84 cm), and finally plastering (15 cm) with cement mortar M10 cement mortar.
3. Water-proof measures
After the assembly of the box culvert is finished, hot asphalt is coated on the outer side of the box culvert, the contact part of the box culvert and the filled soil is coated, the thickness of each channel is 1.5mm, mortar is not additionally coated after the coating, and after the construction of the waterproof measures on the outer side of the prefabricated assembled box culvert is finished, the procedures of backfilling, recovering the upper road and the like are carried out.
The technical scheme provided by the utility model is introduced in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the structure and core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (5)
1. A culvert communicating structure based on factory prefabricated box culverts is characterized by comprising clamping grooves which are formed in a foundation bed course and are arranged in the same direction as the culvert communicating structure, and a plurality of prefabricated box culverts which are sequentially spliced in the clamping grooves and are arranged at the bottoms of the prefabricated box culverts, wherein the prefabricated box culverts are cuboids with through middles; the width of the clamping groove is matched with the length of the bottom of the prefabricated box culvert; in the splicing seam between two adjacent prefabricated box culverts, the outer side of the bottom is filled with small stones, the inner side of the bottom is coated with cement mortar, the outer sides of the two sides and the top are filled with asphalt reinforcement, the inner side of the top is coated with cement mortar, and the middle gap is filled with clay.
2. the culvert communication structure of claim 1, wherein the width of the splicing seams ranges from 0.8 cm to 1.2 cm.
3. A culvert opening structure as claimed in claim 1, further comprising crack pouring mortar disposed between the outside of the precast box culvert and the slot.
4. A culvert communication structure as claimed in claim 1, wherein the top outside of the precast box culvert has lifting holes for lifting.
5. The culvert communication structure of claim 1, further comprising waterproof asphalt coated on the contact part of the outer wall of the whole culvert communication structure and the filling soil after the prefabricated box culvert is spliced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920298223.9U CN209760060U (en) | 2019-03-11 | 2019-03-11 | Culvert opening structure based on factory-like prefabricated box culvert |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920298223.9U CN209760060U (en) | 2019-03-11 | 2019-03-11 | Culvert opening structure based on factory-like prefabricated box culvert |
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| CN209760060U true CN209760060U (en) | 2019-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114393670A (en) * | 2021-11-24 | 2022-04-26 | 中交二公局萌兴工程有限公司 | Prefabricated box culvert process and assembling method |
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- 2019-03-11 CN CN201920298223.9U patent/CN209760060U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114393670A (en) * | 2021-11-24 | 2022-04-26 | 中交二公局萌兴工程有限公司 | Prefabricated box culvert process and assembling method |
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