CN110747766A - Box culvert foundation leveling construction method - Google Patents
Box culvert foundation leveling construction method Download PDFInfo
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- CN110747766A CN110747766A CN201911032795.3A CN201911032795A CN110747766A CN 110747766 A CN110747766 A CN 110747766A CN 201911032795 A CN201911032795 A CN 201911032795A CN 110747766 A CN110747766 A CN 110747766A
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- leveling
- box culvert
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
-
- 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
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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Abstract
The invention relates to the technical field of bridge and culvert construction, and provides a box and culvert foundation leveling construction method, which comprises the following steps: pouring a plurality of leveling layers which are arranged in parallel; assembling the box culvert on the leveling layer, wherein the length direction of the leveling layer is consistent with that of the box culvert, and a plurality of grouting holes are formed in the box culvert along the length direction; and pouring a filling layer in the gap between two adjacent leveling layers through the grouting holes. The box culvert foundation leveling construction method solves the problem that the assembly precision of a box culvert is low due to the fact that a foundation cushion layer is not flat in the prior art, and therefore stress concentration at the bottom of the box culvert is caused.
Description
Technical Field
The invention relates to the technical field of bridge and culvert construction, in particular to a box and culvert foundation leveling construction method.
Background
The box culvert refers to a culvert built by reinforced concrete box pipe joints. The box culvert is made of one or more square or rectangular sections, generally made of reinforced concrete or masonry, but reinforced concrete is widely used.
In highway construction process, often use the box culvert, the box culvert generally adopts the assembled construction, treats that the box culvert foundation bed course construction finishes the back, and the box culvert just can be assembled, and the unevenness of foundation bed course will directly influence the precision of assembling of box culvert, also can make the box culvert bottom produce stress concentration.
Disclosure of Invention
Technical problem to be solved
In view of the technical defects and application requirements, the application provides a box culvert foundation leveling construction method to solve the problem of stress concentration at the bottom of a box culvert in the existing box culvert assembly construction.
(II) technical scheme
In order to solve the problems, the invention provides a box culvert foundation leveling construction method, which comprises the following steps: pouring a plurality of leveling layers which are arranged in parallel;
assembling the box culvert on the leveling layer, wherein the length direction of the leveling layer is consistent with that of the box culvert, and a plurality of grouting holes are formed in the box culvert along the length direction;
and pouring a filling layer in the gap between two adjacent leveling layers through the grouting holes.
Wherein, still include before the leveling layer of pouring multichannel parallel arrangement:
the method comprises the following steps of pouring a cushion layer and a protective layer positioned on the cushion layer.
Wherein the height of the cushion layer is 800 mm-1200 mm, and the height of the protective layer is 100 mm-200 mm.
Wherein, pour multichannel parallel arrangement's levelling layer and include:
the leveling layer is formed by pouring C20 concrete.
Wherein the pouring of the filling layer through the grouting holes in the gap between two adjacent leveling layers comprises:
the filling layer is formed by pouring M7.5 cement mortar.
Wherein, pour multichannel parallel arrangement's levelling layer and include:
the distance between two adjacent leveling layers is 500-1000 mm.
Wherein, pour multichannel parallel arrangement's levelling layer and include:
and four corners of the top surface of any leveling layer are correspondingly provided with a first angle steel.
Wherein, the assembly of the box culvert completed on the leveling layer comprises the following steps:
four angles of the bottom surface of the box culvert are correspondingly provided with a second angle steel.
Wherein, after the leveling layer of pouring multichannel parallel arrangement, still include before accomplishing the assembly of box culvert on the leveling layer:
and polishing the top surface of the leveling layer to ensure that the flatness of the top surface of the leveling layer meets a preset flatness threshold value.
Wherein, still include after the top surface to the levelling layer is polished and is handled:
and coating at least one layer of lubricant on the top surface of the leveling layer.
(III) advantageous effects
The box culvert foundation leveling construction method provided by the invention comprises the steps of firstly pouring a plurality of leveling layers which are arranged in parallel, then completing the assembly of the box culvert on the leveling layers, and finally pouring a filling layer in a gap between two adjacent leveling layers through grouting holes. The box culvert foundation leveling construction method solves the problem that the assembly precision of a box culvert is low due to the fact that a foundation cushion layer is not flat in the prior art, and therefore stress concentration at the bottom of the box culvert is caused.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flow chart of a box culvert foundation leveling construction method provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a box culvert provided by an embodiment of the invention;
FIG. 3 is a top view of a leveling layer and a fill layer provided by an embodiment of the present invention;
wherein, 1, cushion layer; 2. a protective layer; 3. leveling the layer; 4. a filling layer; 5. grouting holes; 6. a second angle steel; 7. a box culvert; 8. a first angle steel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart of a box culvert foundation leveling construction method provided in an embodiment of the present invention, and as shown in fig. 1, the box culvert foundation leveling construction method provided in the embodiment of the present invention includes:
s1, pouring a plurality of leveling layers 3 which are arranged in parallel;
any leveling layer 3 is formed by pouring C20 concrete, the leveling layer 3 is in a cuboid shape, and the size of the leveling layer 3 is determined according to the size of the box culvert and is not particularly limited herein. The distance between two adjacent leveling layers 3 is 500 mm-1000 m, and the specific distance is determined according to the size of the box culvert, and is not particularly limited herein.
S2, assembling the box culvert 7 on the leveling layer 3, wherein the length direction of the leveling layer 3 is consistent with that of the box culvert 7, and a plurality of grouting holes 5 are formed in the box culvert 7 along the length direction;
in the present embodiment, four leveling layers 3 arranged in parallel are provided as an example, and are named as a first leveling layer, a second leveling layer, a third leveling layer, and a fourth leveling layer in this order.
The box culvert 7 comprises a plurality of box culvert units, and the plurality of box culvert units are assembled to form a complete box culvert 7. The left side of the box culvert 7 is positioned on the first leveling layer, and the right side of the box culvert 7 is positioned on the fourth leveling layer. Grouting holes in the box culvert 7 can be preset or manufactured after the box culvert 7 is installed on the leveling layer. The grouting holes 5 correspond to the gap between the first leveling layer and the second leveling layer, the grouting holes 5 correspond to the gap between the second leveling layer and the third leveling layer, and the grouting holes 5 correspond to the gap between the third leveling layer and the fourth leveling layer.
And S3, pouring a filling layer 4 in the gap between two adjacent leveling layers 3 through the grouting holes 5.
The filling layer is formed by pouring M7.5 cement mortar. The height of the filling layer 4 is determined according to the assembling precision of the box culvert 7, and is not particularly limited herein.
In the embodiment of the invention, a plurality of leveling layers 3 which are arranged in parallel are poured firstly, then the assembly of the box culvert 7 is completed on the leveling layers 3, and finally the filling layer 4 is poured in the gap between two adjacent leveling layers 3 through the grouting holes 5. The box culvert foundation leveling construction method solves the problem that stress concentration at the bottom of a box culvert is caused by low assembly precision of the box culvert due to unevenness of a foundation cushion layer in the prior art, can quickly level the box culvert foundation and improves construction efficiency.
On the basis of the above embodiment, as shown in fig. 2, before casting a plurality of leveling layers 3 arranged in parallel, the method further includes:
and pouring the cushion layer 1 and the protective layer 2 positioned on the cushion layer 1.
In the embodiment of the invention, the lower surface of the protective layer 2 is in contact with the upper surface of the cushion layer 1, the height of the cushion layer 1 is 800 mm-1200 mm, and the height of the protective layer 2 is 100 mm-200 mm.
The cushion layer 1 includes a pervious concrete surface layer, a percolation cushion layer, a gravel layer, and a plain soil compacting layer. The protective layer 2 is a polypropylene fiber reinforced fine aggregate concrete protective layer or a polyvinyl alcohol fiber reinforced fine aggregate concrete protective layer.
On the basis of the above embodiment, as shown in fig. 3, the step of casting a plurality of leveling layers 3 arranged in parallel comprises: four corners of the top surface of any leveling layer 3 are correspondingly provided with a first angle steel 8.
In the embodiment of the invention, the phenomenon of 'head collision' between the leveling layer 3 and the box culvert can be prevented in the box culvert jacking process.
On the basis of the above embodiment, completing the assembly of the box culvert 7 on the leveling layer 3 includes:
four angles of the bottom surface of the box culvert 7 are correspondingly provided with a second angle steel 6.
In the embodiment of the invention, the box body can be prevented from generating a collision phenomenon in the box culvert jacking process.
On the basis of the above embodiment, after pouring a plurality of leveling layers 3 arranged in parallel, before completing the assembly of the box culvert 7 on the leveling layers 3, the method further includes:
the top surface of the leveling layer 3 is polished so that the flatness of the top surface of the leveling layer 3 satisfies a preset flatness threshold.
In the embodiment of the invention, the top surface of the leveling layer 3 is polished by the polisher, so that the assembly precision of the box culvert can be improved, and the problem of stress concentration at the bottom of the box culvert is prevented.
On the basis of the above embodiment, after the polishing process is performed on the top surface of the leveling layer 3, the method further includes:
at least one layer of lubricant is applied on top of the leveling layer 3.
In the embodiment of the invention, the friction force of the contact between the outer wall of the box culvert and the leveling layer 3 is reduced by injecting the lubricant in the jacking process, and the jacking force is reduced.
In the embodiment of the invention, a cushion layer 1 and a protective layer 2 positioned on the cushion layer 1 are poured; pouring a plurality of leveling layers 3 which are arranged in parallel on the protective layer, wherein four corners of the top surface of any leveling layer 3 are correspondingly provided with a first angle steel 8; polishing the top surface of the leveling layer 3 to ensure that the flatness of the top surface of the leveling layer 3 meets a preset flatness threshold; coating at least one layer of lubricant on the top surface of the leveling layer 3; assembling the box culvert 7 on the leveling layer 3, wherein the length direction of the leveling layer 3 is consistent with that of the box culvert 7, and four corners of the bottom surface of the box culvert 7 are correspondingly provided with second angle steels 6; and pouring a filling layer 4 in the gap between two adjacent leveling layers 3 through grouting holes 5 on the box culvert 7. The box culvert foundation leveling construction method solves the problem that stress concentration at the bottom of a box culvert is caused by low assembly precision of the box culvert due to unevenness of a foundation cushion layer in the prior art, can quickly level the box culvert foundation and improves construction efficiency.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A box culvert foundation leveling construction method is characterized by comprising the following steps:
pouring a plurality of leveling layers which are arranged in parallel;
assembling the box culvert on the leveling layer, wherein the length direction of the leveling layer is consistent with that of the box culvert, and a plurality of grouting holes are formed in the box culvert along the length direction;
and pouring a filling layer in the gap between two adjacent leveling layers through the grouting holes.
2. The box culvert foundation leveling construction method according to claim 1, further comprising, before the casting of the plurality of parallel leveling layers:
the method comprises the following steps of pouring a cushion layer and a protective layer positioned on the cushion layer.
3. The box culvert foundation leveling construction method according to claim 2, wherein the height of the cushion layer is 800 mm-1200 mm, and the height of the protective layer is 100 mm-200 mm.
4. The box culvert foundation leveling construction method according to claim 1, wherein the pouring of the plurality of leveling layers arranged in parallel comprises:
the leveling layer is formed by pouring C20 concrete.
5. The box culvert foundation leveling construction method according to claim 1, wherein the pouring of the filling layer in the gap between two adjacent leveling layers through the grouting holes comprises:
the filling layer is formed by pouring M7.5 cement mortar.
6. The box culvert foundation leveling construction method according to claim 1, wherein the pouring of the plurality of leveling layers arranged in parallel comprises:
the distance between two adjacent leveling layers is 500-1000 mm.
7. The box culvert foundation leveling construction method according to claim 1, wherein the pouring of the plurality of leveling layers arranged in parallel comprises:
and four corners of the top surface of any leveling layer are correspondingly provided with a first angle steel.
8. The box culvert foundation leveling construction method according to claim 1, wherein the assembling of the box culvert on the leveling layer comprises:
four angles of the bottom surface of the box culvert are correspondingly provided with a second angle steel.
9. The box culvert foundation leveling construction method according to claim 1, wherein after the casting of the plurality of leveling layers arranged in parallel, before the assembling of the box culvert on the leveling layers is completed, the method further comprises:
and polishing the top surface of the leveling layer to ensure that the flatness of the top surface of the leveling layer meets a preset flatness threshold value.
10. The box culvert foundation leveling construction method according to claim 9, further comprising, after the grinding treatment of the top surface of the leveling layer:
and coating at least one layer of lubricant on the top surface of the leveling layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911032795.3A CN110747766A (en) | 2019-10-28 | 2019-10-28 | Box culvert foundation leveling construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911032795.3A CN110747766A (en) | 2019-10-28 | 2019-10-28 | Box culvert foundation leveling construction method |
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| Publication Number | Publication Date |
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| CN110747766A true CN110747766A (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911032795.3A Pending CN110747766A (en) | 2019-10-28 | 2019-10-28 | Box culvert foundation leveling construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550379A (en) * | 2021-08-27 | 2021-10-26 | 华能洋浦热电有限公司 | Box culvert type water taking structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202954307U (en) * | 2012-11-30 | 2013-05-29 | 上海市基础工程有限公司 | Jacking soil-cutting device for large porous concrete box culvert |
| CN208084653U (en) * | 2018-04-13 | 2018-11-13 | 中建电力建设有限公司 | concrete prefabricated cover board |
| CN109610263A (en) * | 2018-12-27 | 2019-04-12 | 中铁十四局集团大盾构工程有限公司 | A kind of construction method of fabricated construction sidewalk |
| CN110004967A (en) * | 2019-03-22 | 2019-07-12 | 中铁一局集团厦门建设工程有限公司 | A kind of assembled pipe gallery basis leveling layer and its construction method |
-
2019
- 2019-10-28 CN CN201911032795.3A patent/CN110747766A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202954307U (en) * | 2012-11-30 | 2013-05-29 | 上海市基础工程有限公司 | Jacking soil-cutting device for large porous concrete box culvert |
| CN208084653U (en) * | 2018-04-13 | 2018-11-13 | 中建电力建设有限公司 | concrete prefabricated cover board |
| CN109610263A (en) * | 2018-12-27 | 2019-04-12 | 中铁十四局集团大盾构工程有限公司 | A kind of construction method of fabricated construction sidewalk |
| CN110004967A (en) * | 2019-03-22 | 2019-07-12 | 中铁一局集团厦门建设工程有限公司 | A kind of assembled pipe gallery basis leveling layer and its construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550379A (en) * | 2021-08-27 | 2021-10-26 | 华能洋浦热电有限公司 | Box culvert type water taking structure |
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Application publication date: 20200204 |
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