CN110670608A - Construction method of mortar rubble arch protection slope - Google Patents
Construction method of mortar rubble arch protection slope Download PDFInfo
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- CN110670608A CN110670608A CN201911039378.1A CN201911039378A CN110670608A CN 110670608 A CN110670608 A CN 110670608A CN 201911039378 A CN201911039378 A CN 201911039378A CN 110670608 A CN110670608 A CN 110670608A
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- arch
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- support
- arch ring
- slope
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a construction method of a grouted rubble arch-shaped protection slope, which comprises the following steps: measuring and lofting; finishing a slope surface and prefabricating an arch ring support frame for supporting mortar rubbles on an arch ring, wherein the arch ring support frame comprises an arch support consistent with the design process requirement of an inner ring of the arch ring, and a layer of iron sheet for completely covering an arch surface of the arch support is detachably arranged on the arch surface of the arch support; excavating a foundation pit; composing arch columns and arch rings; placing an arch ring support frame; respectively constructing an arch column and an arch ring; setting a settlement joint; filling the plant growing bag; and (5) maintaining after plastering. The construction method of the mortar rubble arched protection slope, which is disclosed by the invention, carries out construction in a mode of prefabricating the arch ring support and building rubbles on the prefabricated arch ring support, so that the construction period is short, and the arch ring forming quality after construction is good.
Description
Technical Field
The invention relates to a construction method of an arched protection slope, in particular to a construction method of a grouted rubble arched protection slope.
Background
At present, the arch bank protection mainly adopts two kinds of modes construction of mortar-laid bank protection and cast-in-place bank protection. The cast-in-place bank protection's structural strength is better compared with the grout bank protection, but its cost is high, needs the customization steel mould before cast-in-place. The steel die has the disadvantages of large self weight, inconvenient construction, high manufacturing cost and high construction cost, and is not beneficial to popularization. The grout bank protection adopts the mode form that the brickwork was built by laying bricks or stones, has better intensity, and the cost is low, uses more in the bank protection. However, the mortar-grouting construction method requires a certain support when the mortar is not dry in the initial stage. To solve the problem, field constructors often weld the iron sheet with the steel bars for shaping after bending the iron sheet into an arch on the field, and put the iron sheet at the position of the arch ring to support the masonry. The construction mode needs on-site manufacturing, and the construction efficiency is influenced. Meanwhile, the supporting device is simple to process, bears the weight load from one part of the masonry in the using process according to the long time, has low strength and is easy to deform after being used for a long time. In addition, the simple die manufactured on site has the problem of low arching precision, so that the built arch ring is not attractive enough and not accurate enough.
In order to solve the above problems, the applicant intends to consider improving the existing construction process, and construct the arch ring support in a manner of constructing rubbles on the prefabricated arch ring support. So as to simplify the construction process, shorten the construction period and reduce the construction cost.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a construction method of a mortar rubble arch protection slope with short construction period and good molding quality of an arch ring after construction.
In order to solve the technical problems, the invention adopts the following technical scheme:
a construction method of a grouted rubble arch-shaped protection slope is characterized by comprising the following steps: s1, measuring and lofting the slope according to a design drawing, and prefabricating an arch ring support frame for supporting mortar rubbles on an arch ring in a factory, wherein the arch ring support frame comprises an arch support consistent with the design process requirement of an inner ring of the arch ring, and a layer of iron sheet for completely covering the arch surface of the arch support is detachably arranged on the arch surface of the arch support; the arched support comprises at least two arched reinforcing steel bars arranged at intervals, a plurality of connecting rods are arranged between the arched reinforcing steel bars at intervals, and the connecting rods and the arched reinforcing steel bars form an arched surface of the arched support; an arch surface support connected with the arch surface is also arranged in a semi-enclosed space formed by the arch surface; s2, finishing the slope; s3, excavating a base groove under the trimmed slope, and performing mortar bottom sealing on the bottom of the base groove after the base groove is excavated; s4, typesetting the arch posts and the arch rings on the slope, specifically, according to the design requirements, hanging lines on each arch post and each arch ring position of the whole slope surface by using pipelines and tape measures, and then marking by drawing lines; s5, placing and fixing the arch ring support frame prefabricated in S1 under the inner ring of the arch ring according to the mark of the arch ring typesetting; s6, constructing the arch columns and the arch rings line by line from bottom to top, and detaching each layer of arch ring support frame after the construction is finished; when the rubbles are built on the arch ring, the stone is directly built along the upper edge of the arch ring supporting frame fixed in the S5; s7, arranging a settlement joint every 13-16m along the length direction of the revetment, wherein the width of the joint is 1.2-2.5cm, and asphalt floc is filled in the joint and the depth of the joint is 8-12 cm; s8, filling plant bags in each arch center; and S9, plastering the whole masonry on the built rubbles by using cement mortar, and curing after finishing plastering. Therefore, the arch ring support frame is prefabricated in a factory according to the process requirements, and then the prefabricated arch ring support frame is directly fixed at the inner ring position of the arch ring typesetting line during construction, so that the thickness of the masonry stone, the radian of the arch ring and the height of the arch ring built in the later period are consistent with the design requirements, and the molding quality of the arch ring is effectively improved. Meanwhile, the mode of prefabricating and constructing can also save the time for making the support on site by workers, and the construction period is effectively shortened from a certain range. The arched face of the arched support mainly comprises arched reinforcing steel bars and connecting rods, the arched reinforcing steel bars can provide a standard arched curve for the iron sheet, the connecting rods connect the arched reinforcing steel bars to form a whole, an assembly face is provided for the iron sheet, so that the installed iron sheet not only can have good supporting strength under the action of the connecting rods and the arched reinforcing steel bars, but also the arched height and the arched radian can correspond to the design requirements. The iron sheet is detachably connected with the arched bracket, so that the iron sheet can be conveniently mounted and dismounted. Above-mentioned arch ring support piece mainly comprises arch support and iron sheet, simple structure, and arch support intensity is high, and the dead weight is less, and the support frame can be lifted to the later stage only need two workman and install. The side slopes of the settlement joint are orderly divided, and the side slopes bear corresponding loads respectively, so that structural tension fracture caused by uneven settlement when the settlement joint is not arranged is avoided. Meanwhile, construction organization is more convenient.
Furthermore, in S5, before placing the arch ring support frame, the slope soil needs to be driven into the bottom of the arch ring typesetting line by using reinforcing steel bars so as to support the arch ring support frame placed in the later stage. Like this, after the reinforcing bar is squeezed into domatic earlier, can form the support to the arch ring support frame, prevent that the arch ring from producing the displacement under the extrusion of slice stone, influencing the shaping quality of arch ring.
Further, in S9, the masonry is covered in time after being built, water is often sprayed to keep moist, and the maintenance period at normal temperature is not less than 7 d; collision and vibration to the masonry are avoided during maintenance; the mortar of the masonry can not bear the whole design load before the design strength is not reached. Therefore, the masonry maintenance effect is fully guaranteed, the mortar strength is gradually improved, and the overall quality of the masonry arch ring is controlled.
Further, the arch face of arch ring support frame supports including establishing the square pipe between two arch feet of every arch reinforcing bar, has a journal stirrup at the both ends fixed mounting who manages square pipe, the journal stirrup all is equipped with a through-hole along the width direction setting of square pipe in every journal stirrup middle part. Like this, the steel pipe that sets up can prevent that long-term heavy pressure from pushing down the arch reinforcing bar and warp, can play the effect of stereotyping to the arch reinforcing bar, can increase the intensity of arched bracket simultaneously. Meanwhile, the square tube is hollow inside and has small self weight.
Furthermore, a vertically arranged reinforcing pipe is arranged in the middle of each square pipe, L-shaped connecting plates are arranged on the left side and the right side of the lower end of each reinforcing pipe, one side of each connecting plate is fixed with the corresponding reinforcing pipe in a welding mode, and the other side of each connecting plate is fixed with the corresponding square pipe in a bolt mode; the front side and the rear side of the top end of the reinforcing pipe extend out of the arched reinforcing steel bars to form a U-shaped groove for clamping the arched reinforcing steel bars. Like this, the reinforcement pipe that sets up can support arch reinforcing bar middle part, simultaneously, strengthens the joint strength of arch reinforcing bar and square pipe. The reinforced pipe adopts the upper end chucking cooperation, and the lower extreme is installed with connecting plate and bolt fastening's mode, and the installation of reinforced pipe can be convenient for to this kind of fixed mode, during the assembly, earlier with the upper end chucking cooperation back, fixed lower extreme again.
Furthermore, at least one reinforcing diagonal rod with one end fixed with the reinforcing pipe and the other end fixed with the arched steel bars is arranged on two sides of each reinforcing pipe. In this way, the arranged reinforcing inclined rod can effectively share part of external pressure, and meanwhile, the strength of the reinforcing pipe is increased.
Furthermore, four mounting holes which are in one-to-one correspondence with the through holes in the support lugs are formed in four corners of the iron sheet, and the iron sheet is installed on the arched support after penetrating through the mounting holes and the through holes through bolts and being matched with the bolts through nuts. Therefore, four corners of the iron sheet are fixedly installed through bolts, and the iron sheet can be detachably installed.
Furthermore, a plurality of connecting holes are formed in the iron sheet and adjacent to the arched reinforcing steel bars or the connecting rods, and an iron wire for binding and fixing the iron sheet and the arched reinforcing steel bars or the iron sheet and the connecting rods is arranged on each connecting hole. Therefore, the connecting holes and the iron wires can strengthen the connecting points between the arch camber parts of the arch-shaped supports and the iron sheet, and after the arch camber parts are connected at multiple points, the iron sheet can be prevented from displacing, and the connecting strength of the arch camber parts is improved.
Further, a layer of waterproof paint is arranged on the iron sheet. Therefore, the iron sheet cannot be corroded due to the infiltration of water in the building block mortar, and the service life of the iron sheet can be effectively prolonged. Simultaneously, the smoothness degree on iron sheet surface can be increased after painting, thereby being convenient for taking down the supporting piece from the arch ring in the later period.
Drawings
FIG. 1 is a side sectional view of the revetment in the example;
FIG. 2 is a schematic diagram of a slope after the line drawing and the typesetting of the arch ring and the arch column in the embodiment;
FIG. 3 is a schematic view of a slope after the fixing of the arch ring support frame is completed in the embodiment;
FIG. 4 is a schematic perspective view of an arch ring support in an embodiment;
FIG. 5 is a view showing an assembly structure of a square tube and a support lug in the embodiment;
FIG. 6 is a schematic view showing an assembly structure of the top of the reinforcing pipe and the arch-shaped reinforcing bars in the embodiment.
In the figure: the steel pipe comprises an arched steel bar 1, a connecting rod 2, a square pipe 3, a support lug 4, a through hole 41, a reinforcing pipe 5, a connecting plate 6, a reinforcing inclined rod 7, a reinforcing transverse pipe 8 and an iron sheet 9.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example (b):
the construction method of the mortar rubble arch-shaped protection slope provided by the embodiment comprises the following steps: s1, measuring and lofting the slope according to a design drawing, and prefabricating an arch ring support frame for supporting mortar rubbles on the arch ring in a factory, wherein the arch ring support frame comprises an arch support consistent with the design process requirement of an inner ring of the arch ring, and a layer of iron sheet 9 for completely covering the arch surface of the arch support frame is detachably mounted on the arch surface of the arch support frame, as shown in figures 4-5; the arched support comprises at least two arched reinforcing steel bars 1 arranged at intervals, a plurality of connecting rods 2 are arranged between the arched reinforcing steel bars 1 at intervals (the distance between every two adjacent connecting rods 2 is 5-15 cm), and the connecting rods 2 and the arched reinforcing steel bars 1 form an arched surface of the arched support; an arch surface support connected with the arch surface is also arranged in a semi-enclosed space formed by the arch surface, and the arch surface support comprises a square tube 3 arranged between two arch feet of each arch reinforcing steel bar 1; a vertically arranged reinforcing pipe 5 is arranged in the middle of each square pipe 3, L-shaped connecting plates 6 are arranged on the left side and the right side of the lower end of each reinforcing pipe 5, one side of each connecting plate 6 is fixed with each reinforcing pipe through welding, and the other side of each connecting plate 6 is fixed with each square pipe through bolts; as shown in fig. 6, the front and rear sides of the top end of the reinforcing pipe 5 extend out of the arched steel bars 1 to form a U-shaped groove for clamping the arched steel bars; s2, finishing the slope; s3, excavating a base groove under the trimmed slope (as shown in figure 1), and after the base groove is excavated, performing mortar bottom sealing on the bottom of the base groove to avoid the influence on the original soil quality caused by the fact that the bottom of the base groove is exposed in the air for a long time; s4, typesetting the arch posts and the arch rings on the slope (as shown in figure 2), specifically, according to design requirements, hanging lines on each arch post and each arch ring position of the whole slope surface by using a pipeline and a measuring tape, and then marking by drawing lines; s5, placing and fixing the arch ring support frame prefabricated in S1 under the inner ring of the arch ring according to the mark of the arch ring typesetting (as shown in figure 3); s6, constructing the arch columns and the arch rings line by line from bottom to top, and detaching each layer of arch ring support frame after the construction is finished; when the rubbles are built on the arch ring, the stone is directly built along the upper edge of the arch ring supporting frame fixed in the S5; s7, arranging a settlement joint every 13-16m along the length direction of the revetment, wherein the width of the joint is 2cm, and asphalt floc is filled in the joint and the depth of the joint is 10 cm; s8, filling plant bags in each arch center; and S9, plastering the whole masonry on the built rubbles by using cement mortar, and curing after finishing plastering.
Before placing the arch ring support frame, slope soil needs to be driven into the bottom of the arch ring typesetting line by reinforcing steel bars so as to support the arch ring support frame placed in the later period.
Covering the masonry in time after masonry is built, frequently watering to keep moist, and maintaining the curing period at normal temperature to be not less than 7 d; collision and vibration to the masonry are avoided during maintenance; the mortar of the masonry can not bear the whole design load before the design strength is not reached.
In the implementation process, in order to facilitate later-stage surface plastering, mortar is used for building the water-retaining block consistent with the radian of the arch ring, and the design width of the arch support can be the sum of the design width of the arch ring and the thickness of the water-retaining block. Meanwhile, an arched baffle plate with the thickness consistent with that of the water blocking block is arranged on the outer edge of the iron sheet and is vertically fixed on the iron sheet.
In order to increase the strength and stability of the arch support, at least one reinforcing transverse pipe 8 is fixedly arranged between the two square pipes 3. And two sides of each reinforcing pipe 5 are also provided with reinforcing inclined rods 7, at least one end of each reinforcing inclined rod is fixed with the reinforcing pipe 3, and the other end of each reinforcing inclined rod is fixed with the arched steel bars 1. The square pipe 3 and the reinforcing pipe 5 in this embodiment are aluminum alloy square pipes.
Specifically, the specific mounting structure of the iron sheet 9 and the arched bracket is as follows: the two ends of the square tube 3 are fixedly provided with a support lug 4, the support lugs 4 are arranged along the width direction of the square tube, and the middle part of each support lug 4 is provided with a through hole 41; four mounting holes which are in one-to-one correspondence with the through holes 41 on the support lugs 4 are formed in four corners of the iron sheet 9, and the iron sheet 9 is installed on the arched support after penetrating through the mounting holes 41 and the through holes through bolts and being matched with the bolts through nuts. A plurality of connecting holes are formed in the iron sheet 9 and adjacent to the arched reinforcing steel bars 1 or the connecting rods 2, and an iron wire for binding and fixing the iron sheet and the arched reinforcing steel bars or the iron sheet and the connecting rods is arranged on each connecting hole.
Further, in order to prolong the service life of the iron sheet, a layer of waterproof paint is arranged on the iron sheet 9.
There is a journal stirrup 4 at the both ends fixed mounting who manages 3 in side, journal stirrup 4 sets up along the width direction of square pipe, all is equipped with a through-hole 41 in every journal stirrup 4 middle part
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and although the present invention has been described in detail by referring to the preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention can be made without departing from the spirit and scope of the technical solutions, and all the modifications and equivalent substitutions should be covered by the claims of the present invention.
Claims (9)
1. A construction method of a grouted rubble arch-shaped protection slope is characterized by comprising the following steps: s1, measuring and lofting the slope according to a design drawing, and prefabricating an arch ring support frame for supporting mortar rubbles on an arch ring in a factory, wherein the arch ring support frame comprises an arch support consistent with the design process requirement of an inner ring of the arch ring, and a layer of iron sheet (9) for completely covering the arch surface of the arch support is detachably mounted on the arch surface of the arch support; the arched support comprises at least two arched reinforcing steel bars (1) arranged at intervals, a plurality of connecting rods (2) are arranged between the arched reinforcing steel bars (1) at intervals, and the connecting rods (2) and the arched reinforcing steel bars (1) form an arched surface of the arched support; an arch surface support connected with the arch surface is also arranged in a semi-enclosed space formed by the arch surface; s2, finishing the slope; s3, excavating a base groove under the trimmed slope, and performing mortar bottom sealing on the bottom of the base groove after the base groove is excavated; s4, typesetting the arch posts and the arch rings on the slope, hanging lines at each arch post and arch ring position of the whole slope by using pipelines and tape measures according to design requirements, and then marking lines; s5, placing and fixing the arch ring support frame prefabricated in S1 under the inner ring of the arch ring according to the mark of the arch ring typesetting; s6, constructing the arch columns and the arch rings line by line from bottom to top, and detaching each layer of arch ring support frame after the construction is finished; when the rubbles are built on the arch ring, the stone is directly built along the upper edge of the arch ring supporting frame fixed in the S5; s7, arranging a settlement joint every 13-16m along the length direction of the revetment, wherein the width of the joint is 1.2-2.5cm, and asphalt floc is filled in the joint and the depth of the joint is 8-12 cm; s8, filling plant bags in each arch center; and S9, plastering the whole masonry on the built rubbles by using cement mortar, and curing after finishing plastering.
2. The method of claim 1, wherein in step S5, before placing the arch ring support frame, the slope soil is driven by the steel bar at the bottom of the arch ring typesetting line to support the arch ring support frame placed at a later stage.
3. The method for constructing an arched protection slope of masonry rubble according to claim 1, wherein in S9, masonry should be covered in time after masonry is completed, and water is often sprayed to keep moist, and the maintenance period at normal temperature should not be less than 7 d; collision and vibration to the masonry are avoided during maintenance; the mortar of the masonry can not bear the whole design load before the design strength is not reached.
4. The construction method of the arched slope protection of masonry rubble according to claim 1, wherein the arch face support of the arch ring support frame comprises a square pipe (3) arranged between two arch feet of each arched reinforcement (1), support lugs (4) are fixedly arranged at two ends of the square pipe (3), the support lugs (4) are arranged along the width direction of the square pipe, and a through hole (41) is formed in the middle of each support lug (4).
5. The construction method of the mortar-rubble arched revetment according to claim 4, wherein a vertically disposed reinforcing pipe (5) is provided in the middle of each square pipe (3), L-shaped connecting plates (6) are provided on both sides of the lower end of the reinforcing pipe (5), one side of each connecting plate (6) is fixed to the reinforcing pipe by welding, and the other side of each connecting plate is fixed to the square pipe by bolts; the front side and the rear side of the top end of the reinforcing pipe (5) extend out of the arched reinforcing steel bars (1) to form a U-shaped groove for clamping the arched reinforcing steel bars.
6. The method for constructing an arched slope protection using masonry stones according to claim 5, wherein reinforcing diagonal members (7) are further provided on both sides of each reinforcing pipe (5) such that at least one end thereof is fixed to the reinforcing pipe (3) and the other end thereof is fixed to the arched reinforcing bars (1).
7. The construction method of the mortar-rubble arched slope protection according to claim 4, wherein four corners of the iron sheet (9) are provided with four mounting holes corresponding to the through holes (41) of the support lugs (4) one by one, and the iron sheet (9) is mounted on the arched bracket after penetrating through the mounting holes and the through holes by bolts and being matched with the bolts by nuts.
8. The method for constructing the arched slope protection of masonry rubble according to claim 7, wherein a plurality of connecting holes are formed in the iron sheet (9) adjacent to the arched rebars (1) or the connecting rods (2), and an iron wire for binding and fixing the iron sheet and the arched rebars or the iron sheet and the connecting rods is provided in each connecting hole.
9. The method for constructing a mortar-rubble arched revetment according to any of claims 1-8, wherein a layer of waterproof paint is applied on the iron sheet (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911039378.1A CN110670608A (en) | 2019-10-29 | 2019-10-29 | Construction method of mortar rubble arch protection slope |
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| CN201911039378.1A CN110670608A (en) | 2019-10-29 | 2019-10-29 | Construction method of mortar rubble arch protection slope |
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| JP4619963B2 (en) * | 2006-02-16 | 2011-01-26 | 株式会社高特 | Construction method of arch-shaped frame structure for stable slope and creation of comfortable landscape and its arch-shaped frame structure |
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Application publication date: 20200110 |