CN212052850U - Mountain area abutment and pier stud foundation structure - Google Patents
Mountain area abutment and pier stud foundation structure Download PDFInfo
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- CN212052850U CN212052850U CN202020330150.XU CN202020330150U CN212052850U CN 212052850 U CN212052850 U CN 212052850U CN 202020330150 U CN202020330150 U CN 202020330150U CN 212052850 U CN212052850 U CN 212052850U
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Abstract
The application discloses mountain area abutment and pier stud foundation structure. The foundation structure of the abutment and the pier stud in the mountainous area comprises an enlarged foundation and an anchoring body. A steel reinforcement framework is arranged in the enlarged foundation, one end of the anchoring body is anchored in a foundation pit of the mountain body, and the lower surface of the enlarged foundation is connected with the other end of the anchoring body. The technical scheme that this application provided can solve the problem that construction and operation risk are big that are difficult to of current mountain area bridge pile foundation.
Description
Technical Field
The application relates to the technical field of civil engineering, in particular to a mountain area abutment and pier stud foundation structure.
Background
With the continuous development of the traffic industry in China, the construction investment of the mountain expressway is more and more. The method mainly relates to roads, bridges and tunnels in highway construction, and particularly plays an irreplaceable role in the area with large terrain difference.
In bridge engineering, the foundation is an important component of the bridge substructure, and the upper load is transmitted to the foundation, which is the main stressed part of the bridge. The foundation of the bridge in the mountainous area is mainly a pile foundation, and because the terrain of the mountainous area is complex, particularly a hillside, large machinery is difficult to construct, and the pile foundation is usually constructed by adopting a manual hole digging construction process, but the construction risk of the process is high.
SUMMERY OF THE UTILITY MODEL
The application provides a mountain area abutment and pier stud foundation structure to solve the current mountain area bridge pile foundation be difficult to the problem that construction and operation risk are big.
The application provides a mountain area abutment and pier stud foundation structure, including enlarging basis and anchor. A steel reinforcement framework is arranged in the enlarged foundation, one end of the anchoring body is anchored in a foundation pit of the mountain body, and the lower surface of the enlarged foundation is connected with the other end of the anchoring body.
In the above-mentioned scheme, provide a mountain area abutment and pier stud foundation structure. The foundation structure includes an enlarged foundation and an anchor. Compared with the existing pile foundation structure, the mountain abutment and pier column foundation structure provided by the scheme can be easily constructed, and the construction risk is small. Simultaneously, through the anchor body, the enlarged base not only can bear vertical force, can also effectively resist horizontal effort, has good antidumping nature, and owing to the inside framework of steel reinforcement that is equipped with of enlarged base, so the framework of steel reinforcement has good ability of pulling to guarantee the stability of bridge.
Optionally, in one possible implementation, the anchoring body is a bolt or an anchor cable.
Optionally, in one possible implementation, the anchor is a pre-stressed structure.
Optionally, in one possible implementation, one end of the anchor body penetrates through the lower surface of the enlarged base and is embedded inside the enlarged base.
Optionally, in a possible implementation manner, an anchor hole is reserved inside the enlarged foundation, and one end of the anchor body is arranged in the anchor hole.
Alternatively, in one possible implementation, the enlarged foundation is a stepped or tapered reinforced concrete structure.
Optionally, in a possible implementation, the enlarged base includes a first portion and a second portion from top to bottom, the first portion and the second portion are cubes with a central axis being coaxial, and a size of the first portion is smaller than a size of the second portion.
Optionally, in a possible implementation, the upper surface of the enlarged base is provided with a platform body or pier body.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural view of a mountain abutment and pier stud foundation structure in this embodiment;
FIG. 2 is a schematic structural view of the table body according to the embodiment;
fig. 3 is a schematic structural view of the enlarged pier body;
fig. 4-7 are schematic views illustrating a construction method of a mountain abutment and a pier stud foundation according to this embodiment.
Icon: 10-bridge abutment and pier stud foundation structure in mountainous area; 11-expanded basis; 12-an anchor; 20-a table body; 21-a table cap; 30-pier body; 40-excavating mountain bodies; 41-side slope line; 42-excavating a surface; 43-foundation pit; 44-drilling; 110-a first portion; 111-second part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The technical solution in the present application will be described below with reference to the accompanying drawings.
The embodiment provides a mountain area abutment and pier stud foundation structure 10 to solve the problem that the existing mountain area bridge pile foundation is difficult to construct and has a large operation risk.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a mountain abutment and pier foundation structure 10 in this embodiment.
The mountain abutment and pier foundation structure 10 includes an enlarged foundation 11 and an anchor 12. A steel reinforcement framework is arranged in the expanded foundation 11, one end of the anchoring body 12 is anchored in a foundation pit of a mountain, and the lower surface of the expanded foundation 11 is connected with the other end of the anchoring body 12.
In the above scheme, a mountain area abutment and pier stud foundation structure 10 is provided. The foundation structure comprises an enlarged foundation 11 and an anchor 12. Compared with the existing pile foundation structure, the mountain abutment and pier column foundation structure 10 provided by the scheme can be easily constructed, and the construction risk is small. Meanwhile, through the anchoring bodies 12, the enlarged foundation 11 can bear vertical force, can effectively resist horizontal acting force, has good overturning resistance, and has good tension capability due to the fact that the steel bar framework is arranged inside the enlarged foundation 11, so that the stability of the bridge is guaranteed. The construction method will be described below.
Wherein, enlarge the upper surface of basis 11 and be equipped with platform body 20 or pier shaft 30, and platform body 20 or pier shaft 30 and enlarge the upper surface of basis 11 perpendicular to be convenient for enlarge the better load that supports platform body 20 or pier shaft 30 transmission of basis 11. Fig. 2 shows a structure in which the upper surface of the enlarged base 11 is the platform body 20 (and the platform cap 21) and fig. 3 shows a structure in which the upper surface of the enlarged base 11 is the pier body 30.
The anchor 12 may be a bolt or cable. The anchor 12 may be a pre-stressed structure of the anchor 12, such as a bolt or cable made with pre-stressed tendons. The prestressed tendon has the advantages of improving the crack resistance, rigidity and impermeability of the member, fully playing the material performance and saving steel.
As shown in fig. 1, the anchor 12 is an anchor rod vertically disposed in a mountain excavation. Meanwhile, it should be noted that, at the time of construction of the foundation structure, a drilled hole can be easily constructed by a drilling machine to place an anchor, and the anchor is anchored by grouting into the drilled hole.
One end of the anchor 12 penetrates the lower surface of the enlarged base 11 and is embedded inside the enlarged base 11.
In one possible implementation, the anchoring body 12 is a bolt or an anchor cable, a bolt hole or an anchor cable hole is reserved inside the enlarged foundation 11 to accommodate the anchoring body 12, and after the bolt or the anchor cable is tensioned, the anchor is sealed.
Alternatively, in a possible implementation, the enlarged foundation 11 is a step-like (as shown in fig. 2) or a tapered reinforced concrete structure (as shown in fig. 3), and the enlarged foundation 11 can uniformly disperse the load transmitted by the upper platform body 20 (or the pier body 30) through a structure which is large at the top and small at the bottom and is uniformly distributed.
In one possible implementation case, as shown in fig. 2, the enlarged base 11 includes a first portion 110 and a second portion 111 from top to bottom, the first portion 110 and the second portion 111 are cubes with coaxial central axes, and the size of the first portion 110 is smaller than that of the second portion 111.
It should be noted that the present application also provides a method for constructing a foundation of a bridge abutment and a pier stud in a mountainous area, which comprises:
the place is leveled, and the place is leveled the step and includes: excavating a mountain body to form a flat excavated surface;
and (3) excavating a foundation, wherein the foundation excavating step comprises the following steps: excavating a foundation pit according to the ground elevation of the enlarged foundation 11;
the construction of the anchoring body comprises the following steps: installing an anchoring body in a foundation pit of a mountain;
expanding the foundation construction, wherein the expanding foundation construction step comprises the following steps: binding steel bars in the foundation pit, erecting a mold and pouring concrete, and maintaining to form an enlarged foundation;
anchor bolt tensioning, the anchor bolt tensioning step includes: and tensioning the anchoring body and sealing the anchor.
According to the steps, the bridge abutment and the pier stud foundation in the mountain area are constructed.
Fig. 4, 5, 6, and 7 are flowcharts of a specific construction method.
Site leveling, referring to fig. 4, the site leveling step includes: measuring and lofting, determining an excavation surface 42 according to the terrain, and performing mountain excavation by using an excavator to form a flat excavation surface 42 (wherein, an excavation mountain 40 and a side slope line 41 thereof are shown in fig. 4);
foundation excavation, referring to fig. 5, the foundation excavation step includes: according to the ground elevation of the enlarged foundation 11, a reasonable supporting and enclosing mode is selected for foundation pit excavation (fig. 5 shows a foundation pit 43 formed after excavation), and when the excavation surface 42 is 30cm away from the designed elevation, manual excavation is adopted to prevent overexcavation;
anchor rod construction, referring to fig. 6, the anchor rod construction steps include: the position of the anchor rod (marked with the anchor body 12 in fig. 6 and 7) is lofted, drilling is then performed using a drilling machine, and drilling is stopped when the depth of the drilled hole 44 reaches a specified value (the depth of the drilled hole 44 is greater than the length of the anchor rod by 0.5 m). The borehole 44 is flushed and the bolt is then installed into the borehole 44. After the anchor rod is installed, grouting is carried out on the drill hole 44, and grouting and pipe drawing are carried out during grouting;
the foundation enlargement construction, referring to fig. 7, the foundation enlargement construction step includes: lofting the dimension line of the enlarged foundation, binding reinforcing steel bars, standing a mold to pour concrete after the reinforcing steel bars are bound, and curing to form an enlarged foundation 11, wherein an anchor rod hole (when an anchor cable is used, an anchor cable hole is reserved) is reserved in the enlarged foundation 11;
anchor bolt tensioning, the anchor bolt tensioning step includes: after the expanded foundation concrete meets the tensioning requirement, the anchor rods are tensioned according to the hole spacing tensioning sequence, and the influence on the adjacent anchor rods is reduced. And after tensioning is finished, sealing the anchor head.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. The utility model provides a mountain area abutment and pier stud foundation structure which characterized in that includes:
expanding the foundation; and
an anchor;
the interior of the enlarged foundation is provided with a steel reinforcement framework, one end of the anchoring body is anchored in a foundation pit of a mountain body, and the lower surface of the enlarged foundation is connected with the other end of the anchoring body.
2. The mountain abutment and pier foundation structure of claim 1,
the anchoring body is an anchor rod or an anchor cable.
3. The mountain abutment and pier foundation structure of claim 2,
the anchoring body is of a prestressed structure.
4. The mountain abutment and pier foundation structure of claim 3,
one end of the anchoring body penetrates through the lower surface of the enlarged foundation and is embedded in the enlarged foundation.
5. The mountain abutment and pier foundation structure of claim 4,
an anchor hole is reserved in the enlarged foundation, and one end of the anchor body is arranged in the anchor hole.
6. The mountain abutment and pier foundation structure of claim 1,
the enlarged foundation is of a step-shaped or conical reinforced concrete structure.
7. The mountain abutment and pier foundation structure of claim 6,
the expanding base comprises a first part and a second part from top to bottom, the first part and the second part are cubes with coaxial central axes, and the size of the first part is smaller than that of the second part.
8. The mountain abutment and pier foundation structure of claim 1,
the upper surface of the enlarged foundation is provided with a platform body or a pier body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020330150.XU CN212052850U (en) | 2020-03-16 | 2020-03-16 | Mountain area abutment and pier stud foundation structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020330150.XU CN212052850U (en) | 2020-03-16 | 2020-03-16 | Mountain area abutment and pier stud foundation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111254966A (en) * | 2020-03-16 | 2020-06-09 | 浙江省交通规划设计研究院有限公司 | Mountain abutment and pier column foundation structure and construction method thereof |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111254966A (en) * | 2020-03-16 | 2020-06-09 | 浙江省交通规划设计研究院有限公司 | Mountain abutment and pier column foundation structure and construction method thereof |
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Address after: No. 928, yuhangtang Road, Xihu District, Hangzhou City, Zhejiang Province 310031 Patentee after: Zhejiang shuzhijiaoyuan Technology Co.,Ltd. Address before: No. 928, yuhangtang Road, Xihu District, Hangzhou City, Zhejiang Province 310031 Patentee before: ZHEJIANG PROVINCIAL INSTITUTE OF COMMUNICATIONS PLANNING DESIGN & RESEARCH Co.,Ltd. |