CN210827497U - Bridge and culvert abutment excavation protective structure - Google Patents
Bridge and culvert abutment excavation protective structure Download PDFInfo
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- CN210827497U CN210827497U CN201921748671.0U CN201921748671U CN210827497U CN 210827497 U CN210827497 U CN 210827497U CN 201921748671 U CN201921748671 U CN 201921748671U CN 210827497 U CN210827497 U CN 210827497U
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Abstract
The utility model belongs to the technical field of highway reconstruction and extension construction temporary protection structure, specifically a bridge abutment excavation protective structure. Include can insert behind the splayed wall back of the body that needs demolish and beat the position department of steel sheet pile and be provided with one row of steel sheet pile, the hasp is firm between the adjacent steel sheet pile, the position department that can not insert and beat the steel sheet pile is provided with the reinforcing bar net piece, reinforcing bar net piece one side and steel sheet pile welded fastening, the opposite side is fixed with splayed wall platform body, and spray concrete on the reinforcing bar net piece, reinforcing bar net piece is provided with one row of steel pipe that is used for supporting reinforcing bar net piece and horizontal setting behind the back, steel pipe one end and steel sheet pile welded fastening, the steel pipe other end is fixed with splayed. The utility model relates to a structure of waist rail + spout and mix + steel sheet pile, this structure can guarantee the stability of filling out soil behind the platform, creates safe construction environment.
Description
Technical Field
The utility model belongs to the technical field of highway reconstruction and extension construction temporary protection structure, specifically a bridge abutment excavation protective structure.
Background
When the highway is reconstructed and expanded, the single-side widening or the two-side widening is generally adopted on the basis of the original highway. Before widening, the splayed wall of an old bridge or a culvert needs to be dismantled, and because traffic control is not carried out in reconstruction and expansion construction, the filling behind the platform is easy to collapse and dangerous due to the influence of factors such as vibration and rainfall during vehicle traveling. The roadbed filling behind the splayed wall needs to be protected before demolishing, usually, inserting and beating steel sheet piles are adopted for protection, but when an old bridge abutment is backfilled, large stones and concrete blocks are partially filled near the abutment body, and the bridge abutment is backfilled by adopting grouted paving, or when a foundation is poured, an enlarged foundation is adopted, so that the steel sheet piles cannot be inserted and beaten, or the inserting and beating depth is insufficient, and the stability of the filling behind the abutment cannot be ensured.
Disclosure of Invention
The utility model discloses a solve the steel sheet pile and can't insert to beat or squeeze into this kind of bridge abutment back of body that the degree of depth is not enough, provide a bridge abutment back of body excavation protective structure.
The utility model adopts the following technical proposal: the utility model provides a bridge abutment excavation protective structure, include and to insert the position department of beating the steel sheet pile behind the splayed wall back that needs demolishd and be provided with one row of steel sheet pile, the hasp is firm between the adjacent steel sheet pile, the position department that can not insert and beat the steel sheet pile is provided with reinforcing bar net piece, reinforcing bar net piece one side and steel sheet pile welded fastening, the opposite side is fixed with splayed wall platform body, and spray concrete on reinforcing bar net piece, reinforcing bar net piece is provided with the one row of steel pipe that is used for supporting reinforcing bar net piece and transversely sets up behind one's back, steel pipe one end and steel sheet pile welded fastening, the steel pipe other end is fixed with.
Further, an expansion bolt is arranged on the splayed wall body, a steel plate is fixed on the expansion bolt, the steel pipe is welded and fixed with the steel plate, a steel bar lock catch is arranged on the outer side of the welding position of the steel pipe and the steel plate, and two feet of the steel bar lock catch are welded with the steel plate.
Firstly, inserting and driving steel sheet piles at the place where the steel sheet piles can be inserted and driven behind the splayed wall needing to be removed, and when the steel sheet piles are inserted and driven, the adjacent steel sheet piles must be firmly locked and buckled.
And (3) dismantling the splayed wall of the bridge body, wherein the splayed wall is dismantled step by following the condition that the splayed wall is dismantled from top to bottom, and every 1m is one stage, and the dismantling of the first-stage protection is one stage, so that the splayed wall can not be dismantled completely at one time.
The method comprises the steps that the lateral pressure of the filling soil behind the platform is transmitted layer by layer from top to bottom, the pressure of the uppermost layer is small, after the splayed wall on the uppermost layer is removed, the filling between the steel sheet pile and the platform body is cleaned up, a layer of reinforcing mesh is installed and is close to one side of the platform body, reinforcing bars are planted on the platform body and are welded with the reinforcing mesh, the reinforcing mesh is directly welded with the steel sheet pile and is close to one side of the steel sheet pile, the welding is guaranteed to be firm, and then a layer of sprayed concrete with the depth of 10-.
And (3) removing the splayed wall at the next stage, increasing the lateral pressure of the filled soil along with downward excavation of the platform, similarly installing a reinforcing mesh after the excavation is finished, spraying concrete, fixing a steel plate of 200 x 300 x 10mm on the side surface of the platform body by using 4 expansion bolts, and properly adjusting the depth of the expansion screws according to the height of the splayed wall.
Then adopting a steel pipe with the diameter of 48mm and the wall thickness of 3.5mm, welding one side of the steel pipe to a steel plate fixed on the platform body, directly welding the steel pipe on the steel plate, then adopting a steel bar lock catch with the diameter of 16 to strengthen the connection between the steel pipe and the attached steel plate, and welding 2 steel plates. The other side of the steel pipe is directly welded on the steel sheet pile, meanwhile, the steel pipe end and the steel sheet pile are welded at the position, the connection between the steel pipe and the steel sheet pile is strengthened by adopting a phi 16 steel bar lock catch, and 2 steel pipes are welded at each time. The lock catch steel bar, the steel pipe and the steel plate are welded on two sides, the steel pipe and the steel plate pile panel are also welded on two sides, and the welding meets the standard requirement. The distribution of the soil pressure behind the wall is in a trapezoid distribution with a small top and a big bottom, the distance between the steel pipes is 0.5m within the range of 2m above the original surface, and the distance between the steel pipes is 1m above 2 m.
If the splayed wall is higher, the lateral pressure of the filling soil behind the platform is higher, and the steel pipe support can be properly encrypted to ensure safety.
Compared with the prior art, the utility model relates to a structure of waist rail + spout and mix + steel sheet pile, this structure can guarantee the stability of filling out soil behind the platform, creates safe construction environment.
Drawings
Fig. 1 is a schematic elevation view of the present invention;
fig. 2 is a schematic plan view of the present invention;
FIG. 3 is a schematic view of the anchor of the expansion screw of the present invention;
fig. 4 is a schematic view of the steel bar lock of the present invention;
in the figure, 1-roadbed, 2-steel sheet pile, 3-splayed wall platform body, 4-steel sheet, 5-steel pipe, 6-reinforcing steel bar net piece, 7-expansion bolt and 8-reinforcing steel bar lock catch are adopted.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-4, a bridge abutment excavation protective structure comprises a row of steel sheet piles 2 arranged at positions where the steel sheet piles 2 can be inserted and driven after the splayed wall abutment to be removed is removed, a lock catch between the adjacent steel sheet piles 2 is firm, a reinforcing steel bar net piece 6 is arranged at the position where the steel sheet piles 2 cannot be inserted and driven, one side of the reinforcing steel bar net piece 6 is welded and fixed with the steel sheet piles 2, the other side of the reinforcing steel bar net piece is fixed with the splayed wall abutment 3, concrete is sprayed on the reinforcing steel bar net piece 6, a row of steel pipes 5 used for supporting the reinforcing steel bar net piece 6 and transversely arranged are arranged behind the reinforcing steel bar net piece 6, one ends of the steel pipes 5 are welded and fixed with the steel sheet piles 2.
Be provided with expansion bolts 7 on the splayed wall platform body 3, fixed steel sheet 4 on expansion bolts 7, steel pipe 5 and 4 welded fastening of steel sheet, the outside of steel pipe 5 and 4 welded fastening of steel sheet is provided with steel bar lock 8, two feet of steel bar lock 8 and 4 welding of steel sheet.
Firstly, inserting and driving steel sheet piles at the place where the steel sheet piles can be inserted and driven behind the splayed wall needing to be removed, and when the steel sheet piles are inserted and driven, the adjacent steel sheet piles must be firmly locked and buckled.
And (3) dismantling the splayed wall of the bridge body, wherein the splayed wall is dismantled step by following the condition that the splayed wall is dismantled from top to bottom, and every 1m is one stage, and the dismantling of the first-stage protection is one stage, so that the splayed wall can not be dismantled completely at one time.
The method comprises the steps that the lateral pressure of the filling soil behind the platform is transmitted layer by layer from top to bottom, the pressure of the uppermost layer is small, after the splayed wall is dismantled, the filling between the steel sheet pile and the platform body is cleaned up, a layer of reinforcing mesh is installed and is close to one side of the platform body, reinforcing bars are planted on the platform body and welded with the reinforcing mesh, the reinforcing mesh is close to one side of the steel sheet pile, the reinforcing mesh is directly welded with the steel sheet pile to guarantee firm welding, and then sprayed concrete with a layer of 10-20 cm later is sprayed
And (3) removing the splayed wall of the next stage, increasing the lateral pressure of the filled soil along with downward excavation of the platform, similarly installing a reinforcing mesh after the excavation is finished, spraying concrete, and fixing a steel plate of 200 x 300 x 10mm on the side surface of the platform body by using 4 expansion bolts.
Then adopting a steel pipe with the diameter of 48mm and the wall thickness of 3.5mm, welding one side of the steel pipe to a steel plate fixed on the platform body, directly welding the steel pipe on the steel plate, then adopting a steel bar lock catch with the diameter of 16 to strengthen the connection between the steel pipe and the attached steel plate, and welding 2 steel plates. The other side of the steel pipe is directly welded on the steel sheet pile, meanwhile, the steel pipe end and the steel sheet pile are welded at the position, the connection between the steel pipe and the steel sheet pile is strengthened by adopting a phi 16 steel bar lock catch, and 2 steel pipes are welded at each time.
With the removal of the splayed wall, the downward the splayed wall is, the larger the lateral pressure of the filling soil behind the platform is, and the steel pipe support can be properly encrypted to ensure the safety.
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 the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (2)
1. The utility model provides a bridge and culvert abutment excavation protective structure which characterized in that: include that the position department that can insert behind the splayed wall back that needs demolish beats steel sheet pile (2) is provided with one row of steel sheet pile (2), the hasp is firm between adjacent steel sheet pile (2), the position department that can not insert and beat steel sheet pile (2) is provided with reinforcing bar net piece (6), reinforcing bar net piece (6) one side and steel sheet pile (2) welded fastening, the opposite side is fixed with splayed wall stage body (3), and spray concrete on reinforcing bar net piece (6), reinforcing bar net piece (6) are provided with behind one back and are used for supporting reinforcing bar net piece (6) and horizontal one row of steel pipe (5) that set up, steel pipe (5) one end and steel sheet pile (2) welded fastening, the steel pipe (5) other end is fixed with splayed wall stage body (3).
2. The bridge abutment back excavation protective structure of claim 1, characterized in that: splayed wall platform body (3) on be provided with expansion bolts (7), fixed steel sheet (4) on expansion bolts (7), steel pipe (5) and steel sheet (4) welded fastening's the outside is provided with reinforcing bar hasp (8), two feet of reinforcing bar hasp (8) and steel sheet (4) welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921748671.0U CN210827497U (en) | 2019-10-18 | 2019-10-18 | Bridge and culvert abutment excavation protective structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921748671.0U CN210827497U (en) | 2019-10-18 | 2019-10-18 | Bridge and culvert abutment excavation protective structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210827497U true CN210827497U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921748671.0U Active CN210827497U (en) | 2019-10-18 | 2019-10-18 | Bridge and culvert abutment excavation protective structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210827497U (en) |
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2019
- 2019-10-18 CN CN201921748671.0U patent/CN210827497U/en active Active
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