CN116240906A - Construction method of high-side slope anchor rod sash beam - Google Patents
Construction method of high-side slope anchor rod sash beam Download PDFInfo
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- CN116240906A CN116240906A CN202310263424.6A CN202310263424A CN116240906A CN 116240906 A CN116240906 A CN 116240906A CN 202310263424 A CN202310263424 A CN 202310263424A CN 116240906 A CN116240906 A CN 116240906A
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- anchor rod
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Abstract
The invention relates to a construction method of a high-side slope anchor rod sash beam, which comprises the following steps: s1, measuring and lofting, S2, adopting an anchor rod trolley to enter, S3, manually clearing a slope, S4, drilling the anchor rod trolley, S5, checking and accepting the anchor hole, S6, manufacturing and installing an anchor rod body, S7, grouting the anchor rod trolley, and S8, constructing a lattice beam. According to the method, the anchor rod trolley is used for constructing the anchor rod lattice beam, the drilling construction is completed through the drilling unit, the anchor rod installation construction is completed through the mechanical platform, the grouting construction is completed through the grouting unit, and finally the mechanical platform is used for assisting the lattice beam construction, so that the anchor rod trolley process is applied to the high slope anchor rod lattice beam construction, the erection of a simple rack or scaffold is avoided, the total construction efficiency of the high slope anchor rod lattice beam is effectively improved, the potential safety hazard problem of the anchor rod construction is reduced, the effect is good, and the method can be popularized and used.
Description
Technical Field
The invention relates to the technical field of slope protection construction, in particular to a high-slope anchor rod sash beam construction method.
Background
The construction method is characterized in that the construction method comprises the steps of firstly drilling holes by a pneumatic rock drill, then manually grouting by a simple rack or a scaffold, installing anchor rods, and then constructing a frame beam. In summary, how to solve the problems of high labor intensity, low efficiency and high risk potential of operators in anchor rod construction has become a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide an application technology of an anchor rod trolley technology in high slope anchor rod sash beam construction, which aims to solve the problems of poor safety, high labor intensity, long construction period and the like of an anchor rod construction facility of a high slope.
The invention provides a construction method of a high-side slope anchor rod sash beam, which comprises the following steps: the method comprises the following steps: s1, measuring and lofting, S2, adopting an anchor rod trolley to enter, S3, manually clearing a slope, S4, drilling the anchor rod trolley, S5, checking and accepting the anchor hole, S6, manufacturing and installing an anchor rod body, S7, grouting the anchor rod trolley, and S8, constructing a lattice beam.
The step S1 comprises the steps of arranging a fixed pile by an instrument for starting and stopping points in the construction range of an anchor rod according to the requirements of a design elevation drawing, measuring other hole sites by taking the fixed pile as a standard steel rule, uniformly lofting the whole section, ensuring that the hole site error is not more than +/-50 mm, and marking the measured hole site.
The step S2 comprises selecting an anchor rod trolley with a multifunctional automatic control system integrating drilling, grouting and anchor rods, and comprises the following steps: the device comprises a vehicle body, a cab, a mechanical arm mounting frame, a mechanical arm, a mechanical platform, a drilling unit, a grouting unit, an anchor rod unit, an arm support control unit and a mechanical arm sensor unit.
And S3, manually removing sundries and loose rocks on the slope from top to bottom, and chiseling small loose and suspended rocks to enable the construction slope to be smooth, wherein the convex-concave difference of the rock blocks on the slope is smaller than 8cm.
The S4 step comprises the steps of drilling by adopting an anchor rod trolley pneumatic drilling unit, wherein the included angle between a hole body and a horizontal plane is 15-25 degrees, the diameter of an anchor rod is 32mm, the diameter of an anchor hole is 90mm, the inclination error of the anchor hole is not more than 2 degrees, and the actual drilling depth is 0.2m greater than the designed hole depth; and after the drilling is finished, cleaning the holes by using high-pressure air, and cleaning rock powder and accumulated water in the holes.
And S5, after the anchor rod hole is drilled, the anchor rod hole is subjected to on-site supervision and inspection to be qualified, a next procedure can be carried out, the hole diameter and hole depth inspection adopts the design hole diameter, the drill bit and a standard drill rod to inspect the hole under the condition of an on-site supervision side station, the drill bit is required to be pushed smoothly in the hole inspection process, no impact or shaking is generated, the inspection and conveying length of the drill tool meets the design anchor rod hole depth, the drilling returning requirement is smooth, and obvious dust and water splashing phenomenon is avoided by high-pressure air blowing inspection.
S6, 1) manufacturing an anchor rod, setting a middle frame on an anchor rod piece every 2.0m for enabling the anchor rod to be positioned in the center of a drilling hole, ensuring that the protection thickness of the anchor rod is not less than 50mm, keeping the anchor rod steel bar straight, smoothly straightening, removing oil and embroidering, placing the manufactured anchor rod on a tray of a mechanical platform disc, and manually installing;
2) And (2) mounting: when an anchor rod body is placed by adopting an anchor rod trolley anchor rod unit, the rod body is prevented from twisting and bending, the grouting pipe is preferably placed into the hole together with the anchor rod, the distance from the end of the inner pipe to the bottom of the hole is 200mm, the placing angle of the rod body is consistent with the inclination angle of the drilling hole, and the rod body is always positioned in the center of the drilling hole after the anchor rod trolley anchor rod unit is installed; if Kong Bi collapses, re-penetrating and clearing holes until the anchor rod can be smoothly fed, arranging reinforcing steel bar centering brackets of 6 in each position at intervals of 2.0m between anchor rod bodies, and welding the reinforcing steel bar centering brackets on the anchor rod in a staggered manner before arranging the anchor rod, wherein when the anchor rod is inserted, the bottom end of the rod is at a distance of 20cm from the bottom of a real drill hole.
The step S7 comprises the steps of constructing through an anchor rod trolley grouting unit and adopting a hole bottom grouting method. Grouting is carried out after the anchor rod is accurately installed in the drill hole, grouting is carried out by adopting a grouting sleeve to pour the anchor rod from the bottom of the drill hole to the direction of an orifice, grouting pressure is 0.4-0.8 MPa, grouting is compact, slurry is full, grouting amount is not less than calculated amount, filling coefficient is 1.1-1.3 during pressure grouting, slurry is uniformly stirred and sieved, slurry is used along with stirring, the slurry is used up before initial setting, a grouting pipeline is kept smooth frequently, grouting is carried out when the anchor body cannot be filled after the slurry is hardened, grouting amount is not less than calculated amount, and filling coefficient is 1.1-1.3.
The step S8 comprises the following steps: 1) And (3) grading excavation: according to the positions of a longitudinal frame and a transverse beam of a frame tested by a measurer, scattering out excavation edges by lime, checking by a steel ruler measuring method, firstly trimming an excavated side slope, flattening a protruding place, accurately excavating a single frame beam profile according to the sizes of the longitudinal frame beam and the transverse beam and the thickness of a template, sequentially excavating and pouring the whole transverse beam and the longitudinal beam according to the arrangement positions of expansion joints in a sectionalized manner, wherein the excavation depth of a foundation trench is 30cm, and the width is the design width plus the width of the template; 2) Binding reinforcing steel bars: all the reinforcing bars are processed in a reinforcing bar field, materials used for manufacturing and the like are required to be checked to be qualified, the processed reinforcing bars are transported to the field, and a mechanical platform is adopted to assist manual binding of the reinforcing bars. The steel bars are integrally formed by using M25 mortar cushion blocks and are firmly connected with short steel bar anchors, and the number of cushion blocks on the side surfaces and the bottom surface is not less than 4/M < 2 >; 3) And (3) installing a template: firstly, checking the construction quality of the steel bars, and then installing a template, wherein the surface of the template is brushed with a release agent, so that demolding is facilitated; the template assembly is kept smooth and compact, the clearance size is accurate, and the design requirement is met; 4) And (3) manufacturing a frame beam: the frame beam adopts C25 cast-in-place concrete, pumping concrete into a mould, pouring from low to high, vibrating by an inserted vibrating rod until the concrete is no longer submerged, no bubbles emerge, surface grouting, arranging an expansion joint every 15m, and filling asphalt hemp bars, wherein the joint width is 2 cm; 5) And (3) removing the formwork and curing, namely removing the formwork when the concrete of the frame beam reaches 2.5Mpa, immediately covering the concrete with geotextile and a plastic film after removing the formwork, and sprinkling water for curing, wherein the curing time is not less than 7 days.
Before the construction, an anchor rod anti-pulling test is also required, and the anchor rod anti-pulling force is 200KN.
According to the construction method for the high-slope anchor rod lattice beam, the anchor rod lattice beam is constructed by adopting the anchor rod trolley with the multifunctional automatic control system integrating drilling, grouting and anchor rods, the drilling construction is completed through the drilling unit, then the anchor rod installation construction is completed through the mechanical platform and the anchor rod unit, the grouting construction is completed through the grouting unit, finally the lattice beam construction is assisted by the mechanical platform, so that the anchor rod trolley process is applied to the construction of the high-slope anchor rod lattice beam, all anchor rod constructions are completed through the mechanical arm and the mechanical platform on a narrow section of a mountain side slope, the erection of a simple rack or scaffold is avoided, the construction efficiency of the high-slope anchor rod lattice beam is effectively improved, and the potential safety hazard of the anchor rod construction is reduced.
Drawings
FIG. 1 is a flow chart of a construction method of a high side slope anchor rod sash beam provided by the invention;
fig. 2 is a diagram of an anchor rod trolley used in the construction method of the high-side slope anchor rod sash beam.
Detailed Description
Referring to fig. 1, the overall steps of a construction method of a high side slope anchor rod sash beam provided by the invention are shown, and the method comprises the following steps: s1, measuring and lofting, S2, adopting an anchor rod trolley to enter, S3, manually clearing a slope, S4, drilling, S5, checking and accepting anchor holes, S6, manufacturing and installing an anchor rod body, S7, grouting the anchor holes, and S8, constructing a lattice beam. Wherein, S1 step: according to the requirements of design elevation drawings, in the construction range of an anchor rod, a fixed pile is arranged on a starting point and a stopping point by an instrument, other hole sites are measured by taking the fixed pile as a standard steel rule, the whole section is uniformly lofted, the error of the hole site is not more than +/-50 mm, the measured hole site is marked, the concrete height of a vertical beam can be determined according to the actual slope height, wherein the position of the anchor rod is lofted according to the length of an equally-divided slope, and the pitch of nodes is 3 meters;
the step S2 comprises the following steps: the entering selects the stock platform truck that has drilling, slip casting, stock as an organic whole multi-functional automatic control system, and it includes: the device comprises a vehicle body 1, a cab 2, a mechanical arm mounting frame 3, a mechanical arm 4, a mechanical platform 5, a drilling unit 6, a grouting unit 7, an anchor rod unit 8, an arm support control unit 9 and a mechanical arm sensor unit 10; the step S3 comprises the following steps: the slope sundries and loose rocks are manually removed from top to bottom, small loose and suspended rocks are chiseled, the construction slope is smooth, the follow-up frame beam construction and concrete pouring are facilitated, and the convex-concave difference of the slope rock blocks is ensured to be smaller than 8cm.
The step S4 comprises the following steps: drilling, namely drilling by adopting an anchor rod trolley pneumatic drilling unit 6, wherein the included angle between the hole body and the horizontal plane is kept to be 15-25 degrees, the diameter of an anchor rod is middle 32mm, the diameter of an anchor hole is 90mm, the inclination error of the anchor hole is not more than 2 degrees, and the actual drilling depth is 0.2m greater than the designed hole depth; and after the drilling is completed, cleaning the holes by using high-pressure air, and cleaning rock powder and accumulated water in the holes.
And S5, after the anchor rod hole is drilled, the anchor rod hole is subjected to on-site supervision and inspection to be qualified, a next procedure can be carried out, the hole diameter and hole depth inspection adopts the design hole diameter, the drill bit and a standard drill rod to inspect the hole under the condition of an on-site supervision side station, the drill bit is required to be pushed smoothly in the hole inspection process, no impact or shaking is generated, the inspection and conveying length of the drill tool meets the design anchor rod hole depth, the drilling returning requirement is smooth, and obvious dust and water splashing phenomenon is avoided by high-pressure air blowing inspection.
S6, 1) manufacturing an anchor rod, wherein a middle frame is arranged on a rod piece of the anchor rod every 2.0m for enabling the anchor rod to be positioned in the center of a drilling hole, so that the protection thickness of the anchor rod is not less than 50mm, and the anchor rod steel bar is ensured to be straight, smooth and straight, and oil removal and embroidering are ensured; the manufactured anchor rod is placed on a tray of the mechanical platform 5 and is installed manually.
2) When the anchor rod body is placed by adopting the anchor rod trolley anchor rod unit 8, the rod body is prevented from twisting and bending, the grouting pipe is preferably placed into the hole along with the anchor rod, the end of the inner pipe is 200mm away from the bottom of the hole, the placing angle of the rod body is consistent with the inclination angle of the drilling hole, and the rod body is always positioned in the center of the drilling hole after the anchor rod is installed; if Kong Bi is found to collapse, the hole is re-perforated and cleared until the anchor rod can be smoothly fed. The steel bar centering brackets of the middle 6 are arranged at intervals of 2.0m between the anchor rod bodies, and are welded on the anchor rods in a staggered manner before the anchor rods are arranged; when the anchor rod is inserted, the bottom end of the anchor rod is 20cm away from the bottom of the solid drill hole.
The step S7 comprises the step of grouting construction through an anchor rod trolley grouting unit 7, and a hole bottom grouting method is adopted. Grouting is carried out after an anchor rod is accurately installed in a drilling hole, grouting is carried out by adopting a grouting sleeve, grouting pressure is 0.4-0.8 MPa, grouting is compact, slurry is full, grouting amount is not less than calculated amount, filling coefficient is 1.1-1.3 during pressure grouting, slurry is uniformly stirred, sieving is carried out, slurry is used along with stirring, slurry is used up before initial setting, a grouting pipeline is kept smooth frequently, grouting is carried out when an anchor body cannot be filled after the slurry is hardened, grouting amount is not less than calculated amount, grouting is carried out while grouting, grouting pipe is pulled out, pipe orifice is always below a slurry surface, grouting pipe is moved at any time during grouting, and grouting pipe is pulled out completely when the slurry overflows from the hole. When the grouting pipe is pulled out, the situation that whether the reinforcing steel bar is carried out or not is noticed during pipe pulling, otherwise, the grouting pipe is pressed in until the grouting pipe is not carried out, and the pipe pulling is continued. And after grouting, the exposed steel bars are cleaned and protected.
The step S9 comprises the steps of; 1) And (3) grading excavation: and scattering out the excavation edge line by using lime according to the position of the longitudinal beam and the transverse beam of the frame tested by the measuring personnel. And then checking by using methods such as steel ruler measurement, firstly trimming the excavated slope, flattening the protruding place, and then accurately excavating the outline of a single frame beam according to the sizes of the frame longitudinal beam and the transverse beam and the thickness of the template. The whole beam and the longitudinal beam are excavated and poured in sections according to the arrangement positions of the expansion joints, wherein the excavation depth of the foundation trench is 30cm, and the width is the design width plus the template width. Before the frame beam steel bars are installed in construction, scum at the bottom of a frame groove is removed, the foundation is guaranteed to be compact, and a layer of M25 cement mortar leveling cushion layer with the thickness of 2cm is paved at the bottom. Short steel bar anchors are beaten on the slope surface, mortar ((M25) cushion blocks; 2) steel bar binding is prepared, wherein the thickness of the mortar is consistent with that of the concrete protection layer: all the reinforcing bars are processed in a reinforcing bar field, materials used for manufacturing and the like are required to be checked to be qualified, the processed reinforcing bars are transported to the field, and a mechanical platform is adopted to assist manual binding of the reinforcing bars. The steel bars are integrally formed by using M25 mortar cushion blocks and are firmly connected with short steel bar anchors, and the number of cushion blocks on the side surfaces and the bottom surface is not less than 4/M < 2 >; 3) And (3) installing a template: firstly, checking the construction quality of the steel bars, and then installing a template, wherein the surface of the template is brushed with a release agent, so that demolding is facilitated; the template is assembled and maintained flat and tight, the clearance size is accurate, the template is supported and fixed by steel pipes and fasteners, and the template is firmly connected with the exposed end part of the anchor rod, and the bottom of the template is tightly contacted with a foundation to prevent the template from expanding and leaking; 4) And (3) manufacturing a frame beam: the frame beam adopts C25 cast-in-place concrete, pumping concrete into a mould, pouring from low to high, vibrating by an inserted vibrating rod until the concrete is no longer submerged, no bubbles emerge, surface grouting, arranging an expansion joint every 15m, and filling asphalt hemp bars, wherein the joint width is 2 cm; 5) And (3) removing the formwork and curing, namely removing the formwork when the concrete of the frame beam reaches 2.5Mpa, immediately covering the concrete with geotextile and a plastic film after removing the formwork, and sprinkling water for curing, wherein the curing time is not less than 7 days.
Before the construction, an anchor rod anti-pulling test is also required, and the anchor rod anti-pulling force is 200KN.
According to the construction method of the high-slope anchor rod lattice beam, the anchor rod lattice beam is constructed by adopting the anchor rod trolley with the multifunctional automatic control system integrating drilling, grouting and anchor rods, the drilling construction is completed through the drilling unit, then the anchor rod installation construction is completed through the mechanical platform and the anchor rod unit, the grouting construction is completed through the grouting unit, finally the lattice beam construction is assisted by the mechanical platform, the anchor rod trolley process is applied to the high-slope anchor rod lattice beam construction, and all anchor rod constructions are completed through the mechanical arm and the mechanical platform in a narrow section of a mountain side slope.
Claims (10)
1. A construction method of a high side slope anchor rod sash beam is characterized by comprising the following steps: the method comprises the following steps: s1, measuring and lofting, S2, adopting an anchor rod trolley to enter, S3, manually clearing a slope, S4, drilling the anchor rod trolley, S5, checking and accepting the anchor hole, S6, manufacturing and installing an anchor rod body, S7, grouting the anchor rod trolley, and S8, constructing a lattice beam.
2. The high side slope anchor rod sash beam construction method according to claim 1, wherein the method comprises the following steps: the step S1 comprises the steps of arranging a fixed pile by an instrument for starting and stopping points in the construction range of an anchor rod according to the requirements of a design elevation drawing, measuring other hole sites by taking the fixed pile as a standard steel rule, uniformly lofting the whole section, ensuring that the hole site error is not more than +/-50 mm, and marking the measured hole site.
3. The high side slope anchor rod sash beam construction method according to claim 1, wherein the method comprises the following steps: the step S2 comprises selecting an anchor rod trolley with a multifunctional automatic control system integrating drilling, grouting and anchor rods, and comprises the following steps: the device comprises a vehicle body, a cab, a mechanical arm mounting frame, a mechanical arm, a mechanical platform, a drilling unit, a grouting unit, an anchor rod unit, an arm support control unit and a mechanical arm sensor unit.
4. The high side slope anchor rod sash beam construction method according to claim 1, wherein the method comprises the following steps: and S3, manually removing sundries and loose rocks on the slope from top to bottom, and chiseling small loose and suspended rocks to enable the construction slope to be smooth, wherein the convex-concave difference of the rock blocks on the slope is smaller than 8cm.
5. The high side slope anchor rod sash beam construction method according to claim 1, wherein the method comprises the following steps: the S4 step comprises the steps of drilling by adopting an anchor rod trolley pneumatic drilling unit, wherein an included angle between a hole body and a horizontal plane is 15-25 degrees, the diameter of an anchor rod is 32mm, the diameter of an anchor hole is 90mm, the inclination error of the anchor hole is not more than 2 degrees, the actual drilling hole is 0.2m deeper than the designed hole, and high-pressure air is used for clearing holes after the drilling is completed, so that rock powder and accumulated water in the holes are cleared.
6. The high side slope anchor rod sash beam construction method according to claim 1, wherein the method comprises the following steps: and S5, after the anchor rod hole is drilled, the anchor rod hole is subjected to on-site supervision and inspection to be qualified, a next procedure can be carried out, the hole diameter and hole depth inspection adopts the design hole diameter, the drill bit and a standard drill rod to inspect the hole under the condition of an on-site supervision side station, the drill bit is required to be pushed smoothly in the hole inspection process, no impact or shaking is generated, the inspection and conveying length of the drill tool meets the design anchor rod hole depth, the drilling returning requirement is smooth, and obvious dust and water splashing phenomenon does not exist in the high-pressure air blowing inspection.
7. The high side slope anchor rod sash beam construction method according to claim 1, wherein the method comprises the following steps: s6, 1) manufacturing an anchor rod, setting a middle frame on an anchor rod piece every 2.0m for enabling the anchor rod to be positioned in the center of a drilling hole, ensuring that the protection thickness of the anchor rod is not less than 50mm, ensuring that the anchor rod steel bars are straight, smooth and straight, removing oil and embroidering, placing the manufactured anchor rod on a tray of a mechanical platform disc, and manually installing the anchor rod;
2) And (2) mounting: when an anchor rod body is placed by adopting an anchor rod trolley anchor rod unit, the rod body is prevented from twisting and bending, the grouting pipe is preferably placed into the hole together with the anchor rod, the distance from the end of the inner pipe to the bottom of the hole is 200mm, the placing angle of the rod body is consistent with the inclination angle of the drilling hole, and the rod body is always positioned in the center of the drilling hole after the anchor rod trolley anchor rod unit is installed; if Kong Bi collapses, re-penetrating and clearing holes until the anchor rod can be smoothly fed, arranging reinforcing steel bar centering brackets of 6 in each position at intervals of 2.0m between anchor rod bodies, and welding the reinforcing steel bar centering brackets on the anchor rod in a staggered manner before arranging the anchor rod, wherein when the anchor rod is inserted, the bottom end of the rod is at a distance of 20cm from the bottom of a real drill hole.
8. The high side slope anchor rod sash beam construction method according to claim 1, wherein the method comprises the following steps: the S7 step comprises the steps of constructing through an anchor rod trolley grouting unit, grouting after accurately installing an anchor rod in a drill hole by adopting a hole bottom grouting method, grouting by adopting a grouting sleeve from the bottom of the drill hole to the direction of an orifice, grouting pressure of 0.4-0.8 MPa, grouting compaction, full grouting, grouting amount not less than calculated amount, filling coefficient of 1.1-1.3 during pressure grouting, uniformly stirring and sieving the grouting, using the grouting along with stirring, using the grouting before initial setting, constantly keeping a grouting pipeline smooth, and performing grouting when the grouting cannot be filled with an anchor body after hardening, wherein grouting amount not less than calculated amount and filling coefficient of 1.1-1.3.
9. The high side slope anchor rod sash beam construction method according to claim 1, wherein the method comprises the following steps: the step S8 comprises the following steps: 1) And (3) grading excavation: according to the positions of a longitudinal frame and a transverse beam of a frame tested by a measurer, scattering out excavation edges by lime, checking by a steel ruler measuring method, firstly trimming an excavated side slope, flattening a protruding place, accurately excavating a single frame beam profile according to the sizes of the longitudinal frame beam and the transverse beam and the thickness of a template, sequentially excavating and pouring the whole transverse beam and the longitudinal beam according to the arrangement positions of expansion joints in a sectionalized manner, wherein the excavation depth of a foundation trench is 30cm, and the width is the design width plus the width of the template; 2) Binding reinforcing steel bars: all the steel bars are processed in a steel bar field, materials used for manufacturing and the like are required to be checked to be qualified, the processed steel bars are transported to the field, the steel bars are bound manually by adopting a mechanical platform, M25 mortar cushion blocks are applied to the steel bars to be integrated and firmly connected with short steel bar anchors, and the number of the cushion blocks on the side surfaces and the bottom surface is not less than 4/M < 2 >; 3) And (3) installing a template: firstly, checking the construction quality of the steel bars, and then installing a template, wherein the surface of the template is brushed with a release agent, so that demolding is facilitated; the template assembly is kept smooth and compact, the clearance size is accurate, and the design requirement is met; 4) And (3) manufacturing a frame beam: the frame beam adopts C25 cast-in-place concrete, pumping concrete into a mould, pouring from low to high, vibrating by an inserted vibrating rod until the concrete is no longer submerged, no bubbles emerge, surface grouting, arranging an expansion joint every 15m, and filling asphalt hemp bars, wherein the joint width is 2 cm; 5) And (3) removing the formwork and curing, namely removing the formwork when the concrete of the frame beam reaches 2.5Mpa, immediately covering the concrete with geotextile and a plastic film after removing the formwork, and sprinkling water for curing, wherein the curing time is not less than 7 days.
10. The high side slope anchor rod sash beam construction method according to claim 1, wherein the method comprises the following steps: before construction, an anchor rod anti-pulling test is also required, and the anchor rod anti-pulling force is 200KN.
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| CN110629769A (en) * | 2019-09-16 | 2019-12-31 | 中铁广州工程局集团深圳工程有限公司 | Cutting slope prismatic anchor rod frame beam rapid construction method |
| CN112593559A (en) * | 2020-10-30 | 2021-04-02 | 北京城建设计发展集团股份有限公司 | Construction method for deep foundation pit supporting of micro-pile prestressed anchor cable composite soil nailing wall |
| CN112709237A (en) * | 2020-12-24 | 2021-04-27 | 中交一公局集团有限公司 | Construction method of anchor rod sash beam for high-speed slope protection |
| CN114809029A (en) * | 2022-03-14 | 2022-07-29 | 山西一建集团有限公司 | High cutting slope anchor rod frame beam coupling construction method |
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