CN115822302B - Ramming and repairing construction method for repairing ancient ruined wall - Google Patents
Ramming and repairing construction method for repairing ancient ruined wall Download PDFInfo
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Abstract
The invention provides a ramming patch construction method for repairing a site urban wall, which belongs to the technical field of building repair and comprises the following steps of: cleaning and trimming the top surface and the side wall of the ancient wall to form a new rammed foundation; performing interface treatment on the new rammed foundation; paving geotextile on the top surface of the new rammed foundation, and performing waterproof treatment on the root of the side wall of the new rammed foundation; flaw detection is carried out on one side of the newly rammed foundation; mounting a support on the new ramming basis; performing layered ramming along the new rammed foundation from bottom to top to form a city protecting soil body; trimming slope lines on the side wall of the city protecting soil body and performing old treatment on the side wall of the city protecting soil body to form a city wall repairing protection layer; paving an attached soil layer on the top surface of the site urban wall; draining water on the top surface and side wall of the ancient wall; the invention is beneficial to solving the problem that secondary damage of urban wall sites can be caused by vibration generated by tamping operation.
Description
Technical Field
The invention belongs to the technical field of building repair, and particularly relates to a ramming patch construction method for repairing a site urban wall.
Background
The ancient city wall has higher historical cultural value, scientific research value, aesthetic value and social value, and is an indispensable part for urban structures. At present, people have increasingly strengthened protection consciousness of ancient urban walls, but in a specific protection implementation process, some problems still exist.
The Chinese invention patent (application number: CN 201910816796.0) with publication number of CN110512892B proposes a construction method for repairing the existing ancient wall, adopts the measures of drawing Ding Zhijin drawknot measures, externally wrapping manual green bricks and red bricks of lining machines for mixed construction and occlusion, tamping the original soil body of the ancient wall and the step shape of the rammed earth, and the like aiming at different damage conditions, ensures the repairing quality and the construction structure safety of the ancient wall, ensures that the safety of cultural relics is not influenced or hidden danger is generated due to the pursuit of the complete, beautiful and supplementary appearance in the repairing of the ancient wall, and greatly reduces the waste of resources.
Because the historic urban wall site is long, under the erosion of hundreds of years, more defects can appear in the urban wall site, and the integral structure is fragile.
Disclosure of Invention
In view of the above, the invention provides a ramming and repairing construction method for repairing the urban wall at the site, which can solve the technical problem that secondary damage of the urban wall site can be caused by vibration generated by ramming operation.
The invention is realized in the following way:
The invention provides a ramming patch construction method for repairing a site urban wall, which comprises the following steps:
S01: cleaning and trimming the top surface and the side wall of the ancient wall to form a new rammed foundation;
s02: performing interface treatment on the new rammed foundation;
s03: paving geotextile on the top surface of the new rammed foundation, and performing waterproof treatment on the root of the side wall of the new rammed foundation;
s04: performing flaw detection on one side of the new rammed foundation to obtain a defect position in the site urban wall;
s05: installing a support piece at a corresponding position on the new ramming basis by combining the defect position information;
s06: using rammed soil to perform layered ramming along the new rammed foundation from bottom to top to form a city protecting soil body;
s07: trimming a slope line on the side wall of the city protecting soil body and performing old treatment on the side wall of the city protecting soil body to form a city wall repairing protection layer;
S08: paving two layers of soil layers on the top surface of the ruined urban wall, and paving a geogrid between the two layers of soil layers;
S09: and carrying out drainage treatment on the top surface and the side wall of the ruined wall.
The ramming patch construction method for repairing the site urban wall has the technical effects that: by the ramming patch construction method for repairing the ancient ruined urban wall, the special ramming tool is adopted to ramm the clamping plates and the round head ramming stones, the ramming is carried out from bottom to top along the two sides of the ancient ruined urban wall in a layered manner, the overall compactness and the overall stability of the urban protection soil body at the two sides of the ancient ruined urban wall are enhanced, the problem that the water and soil loss of the original urban protection slope of the ancient ruined urban wall is difficult to control is solved, and the effects of repairing and protecting the original urban protection slope at the two sides of the ancient ruined urban wall for a long time are realized.
On the basis of the technical scheme, the ramming patch construction method for repairing the site urban wall can be further improved as follows:
wherein, the step S01 specifically includes the following steps:
Firstly, cleaning vegetation accumulated on the surface of the site urban wall throughout the year until the top surface and the side wall of the site urban wall are exposed, and adopting chemical agents to perfuse the root system for inhibiting the coarse root system of tall trees extending into the deep part of the site urban wall from growing continuously so as to automatically rot into soil;
And secondly, cleaning the wall of the site urban wall and the weathered soft soil layer of the root surface of the wall until the site urban wall exposes the original urban wall rammed soil, and taking the surface layer of the original urban wall rammed soil as the new rammed foundation.
The step of S02 specifically includes:
and roughening the newly rammed foundation to ensure that the newly rammed soil body and the site urban wall are effectively connected and stubble are embedded to form a whole.
The step of paving geotextile on the top surface of the new rammed foundation in the S03 specifically comprises the following steps:
firstly, paving geotextile on the top surface of the new rammed foundation by adopting a method of overlapping and paving a stubble connecting part;
And secondly, fixing the geotextile with the top surface of the site urban wall by adopting a soil body covering and process deviation correcting method.
The step S04 specifically includes:
Scanning the periphery of the wall of the site city by using a flaw detector in an ultrasonic flaw detection mode; dividing the wall of the ruined wall into a plurality of horizontal cross bar areas along the vertical equidistance by combining the vertical scanning distance of a flaw detector probe, and respectively detecting each cross bar area; and judging the defect form and defect position inside the ruined urban wall by combining the energy information reflected by the ruined urban wall, and marking the corresponding side wall of the ruined urban wall.
Further, the step S05 specifically includes:
And (3) vertically drilling a notch in the wall side wall of the ruined site urban wall by combining the horizontal position of the marking information, and supporting the supporting piece in the notch.
The beneficial effects of adopting above-mentioned improvement scheme are: by arranging the support piece, the weak part of the site urban wall can be reinforced in an important way so as to bear the force generated on the site urban wall during ramming, and the secondary damage inside the site urban wall caused by ramming operation is avoided.
The step of S06 specifically includes:
Firstly, tamping and supplementing a bottom ramming layer, wherein an inclined strut is arranged at the position of widening one third of the outer edge of the bottom ramming layer, a ramming clamping plate is arranged, ramming soil is paved in an area surrounded by the ramming clamping plate, and a round head ramming stone is adopted for ramming to form the bottom ramming layer;
Secondly, roughening the top wall of the bottom ramming layer, reserving offset at the top edge of the bottom ramming layer, arranging the ramming clamping plates at the offset, paving the ramming soil in the area surrounded by the ramming clamping plates, and tamping by adopting round-head ramming stones to form a second ramming layer;
thirdly, roughening the top wall of the second ramming layer, reserving the offset at the top edge of the second ramming layer, arranging the ramming clamping plates at the offset, paving the ramming soil in the area surrounded by the ramming clamping plates, and tamping by adopting round-head ramming stones to form a third ramming layer;
and fourthly, repeating the third step until all ramming layers are rammed, and forming the city protecting soil body on the wall side wall of the site urban wall.
The beneficial effects of adopting above-mentioned improvement scheme are: the top wall of each ramming layer is firstly subjected to roughening treatment, and then the upper layer is rammed, so that the cohesive force and the internal friction angle between soil bodies can be increased, and the firm ramming combination of the upper layer and the lower layer is ensured; through increasing the tamping width first, and then the mode of removing the redundant tamping thickness width of the outer side by a shovel, the inner side tamping soil layer is reserved as the city protecting soil body, so that the tamping degree is ensured on the basis of keeping the original tamping width.
Further, the step S07 specifically includes:
Removing the ramming clamping plate, removing the offset trimming shovel on the outer side wall of the city protection soil body, trimming the city protection soil body into a slope form in combination with the site urban wall side wall pattern, and performing distressing trimming on the city protection soil body by referring to the site urban wall side wall surface pattern.
The step of S08 specifically includes:
Firstly, manually transferring raw soil of the soil layer to the top surface of the site urban wall, uniformly paving the raw soil on the top surface of the site urban wall, and tamping by using round-head ramming stones to form a first soil layer;
Secondly, fully paving a layer of geogrid on the top surface of the first layer of soil-attached layer, and fixing the geogrid and the first layer of soil-attached layer firmly;
and thirdly, uniformly paving a layer of raw soil of the soil layer on the geogrid, and tamping by using round-head ramming stones to form a second soil layer.
The step S09 specifically includes:
And arranging drainage ditches on the top surface and the side wall of the ancient ruined wall, and enabling the drainage ditches on the top surface and the side wall of the ancient ruined wall to be communicated to form a whole.
The beneficial effects of adopting above-mentioned improvement scheme are: through the steps, the ordered discharge of the rainwater on the surface of the ancient wall of the remains can be ensured, the long-term flushing of the rainwater can be avoided, the water and soil loss caused by the long-term flushing of the rainwater can be avoided, and the original soil layer of the urban wall of the remains can be damaged.
Compared with the prior art, the ramming patch construction method for repairing the site urban wall has the beneficial effects that: according to the ramming and repairing construction method for repairing the site urban wall, the top wall of each ramming layer is firstly subjected to roughening treatment, and then the upper layer is rammed, so that the cohesive force and the internal friction angle between soil bodies can be increased, and the firm combination of the upper layer and the lower layer is ensured; the tamping width is increased firstly, and then the tamping soil layer on the inner side is reserved as a city protecting soil body in a mode of removing the redundant tamping thickness width on the outer side by a repairing shovel, so that the tamping degree is ensured on the basis of keeping the original tamping width; the supporting piece is arranged to strengthen the site urban wall, so that the damage inside the site urban wall caused by ramming operation is avoided; the invention strengthens the overall compactness and the overall stability of the soil bodies of the urban protection slopes at the two sides of the ancient ruined urban wall, solves the problem that the water and soil loss of the original urban protection slopes of the ancient ruined urban wall is difficult to control, and realizes the effects of repairing and protecting the original urban protection slopes at the two sides of the ancient ruined urban wall for a long time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a ramming patch construction method for repairing a site urban wall, which is provided by the invention;
FIG. 2 is a schematic diagram of a construction method for ramming and repairing a site urban wall according to the present invention;
FIG. 3 is a schematic illustration of a support member in a ramming patch construction method for repairing a site urban wall according to the present invention;
in the drawings, the list of components represented by the various numbers is as follows:
10. A wall of a ruined site; 20. geotextile; 30. a support member; 31. a cross bar; 32. a diagonal rod; 33. a support rod; 40. an earth layer; 50. geogrid; 60. and protecting soil body.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
As shown in FIG. 1, the invention provides a flow chart of a ramming patch construction method for repairing a site urban wall, which specifically comprises the following steps:
S01: cleaning and trimming the top surface and the side wall of the site urban wall 10 to form a new rammed foundation;
S02: performing interface treatment on the new rammed foundation;
s03: paving geotextile 20 on the top surface of the new rammed foundation, and performing waterproof treatment on the root of the side wall of the new rammed foundation;
S04: flaw detection is carried out on one side of the newly rammed foundation to obtain the defect position inside the site urban wall 10;
s05: installing the support 30 at a corresponding position on the new ramming basis in combination with the defect position information;
s06: using rammed soil to perform layered ramming from bottom to top along the new rammed foundation to form a city protecting soil body 60;
S07: trimming the slope line on the side wall of the city protecting soil body 60 and performing old treatment on the side wall of the city protecting soil body 60 to form a city wall repairing protection layer;
S08: paving two layers of soil layers 40 on the top surface of the site urban wall 10, and paving a geogrid 50 between the two layers of soil layers 40;
S09: drainage treatment is performed on the top surface and the side walls of the ruined wall 10.
As shown in fig. 2, in the above technical solution, S01 specifically includes the following steps:
firstly, cleaning vegetation accumulated on the surface of the ruined urban wall 10 throughout the year, cleaning the vegetation until the top surface and the side wall of the ruined urban wall 10 are exposed, and pouring chemical agents into coarse root systems of tall trees extending into the deep part of the ruined urban wall 10 to inhibit continuous growth of the root systems so that the tall trees automatically decay into soil;
and secondly, cleaning the wall of the site urban wall 10 and the weathered soft soil layer of the surface of the root of the wall until the site urban wall 10 exposes the original urban wall rammed soil, and taking the surface layer of the original urban wall rammed soil as a new rammed foundation.
It should be noted that, when cleaning the vegetation on the surface of the site urban wall 10, the soil body of the site urban wall 10 is strictly prevented from being damaged.
In the above technical solution, the step S02 specifically includes:
And roughening the newly rammed foundation to ensure that the newly rammed soil body and the site urban wall 10 are effectively connected and stubble to be embedded to form a whole.
In the above technical solution, the step of laying the geotextile 20 on the top surface of the new rammed foundation in S03 specifically includes:
firstly, paving geotextile 20 on the top surface of a newly rammed foundation by adopting a method of overlapping and paving a stubble connecting part;
and secondly, fixing the geotechnical cloth 20 with the top surface of the site urban wall 10 by adopting a soil body covering and process deviation correcting method.
In S03, the step of performing the waterproof treatment on the root portion of the sidewall of the new rammed foundation specifically includes:
firstly, cement is used for tightly pouring joints at the junction of the root of the side wall of the site urban wall 10 and the ground;
Secondly, cement mortar is used for carrying out base treatment at and near the junction of the root of the side wall of the site urban wall 10 and the ground, and the internal corner is made into an arc shape;
Thirdly, uniformly and outwardly brushing the prepared waterproof paint from the junction of the root of the side wall of the ruined urban wall 10 and the ground, and upwardly brushing the root of the side wall of the ruined urban wall 10 along the side wall to a height of 1 m; brushing the width of 1m outwards along the ground from the root of the side wall of the ancient wall 10; and ensuring the brushing thickness of the waterproof paint to be 1-2 mm to form a first layer of waterproof paint;
fourthly, uniformly brushing a second layer of waterproof coating on the original brushing position after the first layer of waterproof coating is dried.
Wherein, the geotextile 20 is made of a water-permeable geotextile synthetic material formed by needling or braiding synthetic fibers, and has the functions of isolating, filtering, draining and protecting soil bodies; when the geotextile 20 is paved, the geotextile 20 is paved flatly, and the lapping length and the lapping width are larger than 100mm when paving; the waterproof coating is acrylic waterproof coating, and the waterproof film formed after curing has certain extensibility, elastoplasticity, crack resistance, impermeability and weather resistance, and can play roles in waterproof, impermeable and protective.
In the above technical solution, the step S04 specifically includes:
Scanning the periphery of the side wall of the site urban wall 10 by using a flaw detector in an ultrasonic flaw detection mode; dividing the side wall of the ruined wall 10 into a plurality of horizontal cross bar areas along the vertical equal distance by combining the vertical scanning distance of the flaw detector probe, and respectively detecting each cross bar area; and judging the defect form and defect position inside the ruined urban wall 10 by combining the energy information reflected by the ruined urban wall 10, and marking the side wall of the corresponding ruined urban wall 10.
The flaw detection utilizes the characteristic that ultrasonic waves have reflection on different interfaces, and when the ultrasonic waves are transmitted and meet the defects equal to or larger than the wavelength of the ultrasonic waves, the ultrasonic waves are reflected back and reflected waves are displayed on a flaw detector; when encountering defects below the wavelength of the ultrasonic wave, the acoustic wave bypasses the defect and can be reflected.
The defects mainly detected in step S04 are in the form of holes and cracks, wherein:
the echo height of a single hole is low, the waveform is unimodal, the wave is stable, the reflected wave is detected from all directions, the reflected wave is approximately the same, but the probe disappears when the probe is moved slightly; a cluster of reflected waves can appear in a plurality of holes, the wave heights of the reflected waves are different along with the sizes of the air holes, and when the probe rotates at fixed points, the phenomenon of falling off from the reflected waves can appear; the echo height of the crack is larger, the wave amplitude is wide, multiple peaks can appear, the wave amplitude of the reflected wave continuously changes when the probe translates, and the wave peak has the phenomenon of up-down dislocation when the probe rotates; marking the position of the detected single hole with a first mark; marking two positions of two ends of the detected holes respectively; marking the two ends and the middle position of the detected crack respectively; wherein, the flaw detector is a pulse reflection type ultrasonic flaw detector.
Further, in the above technical solution, the step S05 specifically includes:
In combination with the horizontal position of the marking information, a notch is vertically bored in the side wall of the site town wall 10, and the support member 30 is supported in the notch.
It should be noted that, as shown in fig. 3, the support 30 used in step S05 includes a cross bar 31, an inclined bar 32 and a strut 33, the cross bar 31 is horizontally disposed, the inclined bar 32 is obliquely disposed, and the strut 33 is vertically disposed; the cross rod 31 is welded with the diagonal rod 32, and the bottom end of the supporting rod 33 is welded with the middle part of the cross rod 31; the top end of the supporting rod 33 is welded with the middle part of the inclined rod 32; the cross bar 31 is fixedly arranged on the ground through a fixed nail; the inclined rod 32 and the supporting rod 33 are respectively embedded in the notch, the position of the inclined rod 32 is parallel to the side wall of the ruined urban wall 10, and the outer side wall of the inclined rod 32 is flush with the surface of the side wall of the ruined urban wall 10; wherein the cross bar 31, the diagonal bar 32 and the strut 33 are respectively formed by welding square steel pipes, and the opening width of the notch is equal to the width of the square steel pipes.
In the above technical solution, the step S06 specifically includes:
firstly, tamping and supplementing a bottom ramming layer, wherein an inclined strut is arranged at the position of widening one third of the outer edge of the bottom ramming layer, a ramming clamping plate is arranged, ramming soil is paved in an area surrounded by the ramming clamping plate, and ramming is carried out by adopting a round head ramming stone to form the bottom ramming layer;
Secondly, roughening the top wall of the bottom ramming layer, reserving offset at the top edge of the bottom ramming layer, arranging ramming splints at the offset, paving ramming soil in an area surrounded by the ramming splints, and tamping by adopting round-head ramming stones to form a second ramming layer;
Thirdly, roughening the top wall of the second ramming layer, reserving offset at the top edge of the second ramming layer, arranging a ramming clamping plate at the offset, paving ramming soil in an area surrounded by the ramming clamping plate, and ramming by adopting a round head ramming stone to form a third ramming layer;
Fourth, repeating the third step until all the ramming layers are rammed, and forming a city protecting soil body 60 on the side wall of the site urban wall 10.
The soil and the color of the rammed soil are similar to those of the ancient wall 10; the height of each rammed soil layer is 150mm; stubble grafting treatment is carried out at the original soil stubble grafting position of the rammed soil and the site urban wall 10 to ensure the stability of soil body; the ramming splint is made of pine board material, and the height is 150mm; the rammed layers are consistent with the rammed layers of the original soil layers, and the upper and lower staggered joint plates are built and rammed to achieve the effect that the rammed thickness and the rammed nest size of each layer are consistent with the original appearance of the site urban wall 10; in the ramming process, the actual ramming width is one third larger than the design width, and a margin is reserved for subsequent trimming of the slope line and distressing treatment.
Further, in the above technical solution, the step S07 specifically includes:
removing the ramming clamping plates, removing the repairing shovel at the offset position on the outer side wall of the city protection soil body 60, repairing the city protection soil body 60 into a slope form by combining the side wall pattern of the site city wall 10, and performing old repairing on the city protection soil body 60 by referring to the side wall surface pattern of the site city wall 10.
In the above technical solution, the step S08 specifically includes:
Firstly, manually transferring raw soil of an soil layer 40 to the top surface of a site urban wall 10, uniformly paving the raw soil on the top surface of the site urban wall 10, and tamping by using round-head ramming stones to form a first soil layer 40;
secondly, fully paving a layer of geogrid 50 on the top surface of the first soil layer 40, and fixing the geogrid 50 and the first soil layer 40 firmly;
and thirdly, uniformly paving a layer of raw soil of the soil layer 40 on the geogrid 50, and tamping by using round-head ramming stones to form a second soil layer 40.
It should be noted that, the geogrid 50 is a plastic geogrid, which can improve the self-bearing capacity of filling soil on the top surface of the site urban wall 10 and reduce the soil pressure; the raw soil of the soil-attached layer 40 is strictly forbidden to be mechanically moved up to the top surface of the site urban wall 10 so as to avoid damaging the soil structure of the site urban wall 10; when the geogrid 50 is paved, the geogrid 50 is paved flatly, and the lapping length and the lapping width are larger than 100mm when the geogrid 50 is paved.
In the above technical solution, the step S09 specifically includes:
Drainage ditches are arranged on the top surface and the side walls of the ruined urban wall 10, and the drainage ditches on the top surface and the side walls of the ruined urban wall 10 are communicated to form a whole.
Specifically, the principle of the invention is as follows: firstly, detecting the internal defects of the site urban wall 10 by using a flaw detection tool and protecting the site urban wall; then using special ramming clamping plates and round-head ramming stone type ramming tools to perform ramming from bottom to top in layers along the two sides of the site urban wall 10; and the method of tamping three and leaving two is adopted, the tamping width is increased firstly, then the redundant tamping thickness width on the outer side is trimmed and shoveled out, the sum of the tamping width and the tamping degree is kept, and the urban protection soil body 60 with high compactness and stability is formed on the two sides of the ancient ruined urban wall 10, so that the repairing and protecting effects on the ancient ruined urban wall 10 are achieved.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (6)
1. The ramming and repairing construction method for repairing the site urban wall is characterized by comprising the following steps of:
S01: cleaning and trimming the top surface and the side wall of the ancient wall to form a new rammed foundation;
s02: performing interface treatment on the new rammed foundation;
s03: paving geotextile on the top surface of the new rammed foundation, and performing waterproof treatment on the root of the side wall of the new rammed foundation;
s04: performing flaw detection on one side of the new rammed foundation to obtain a defect position in the site urban wall;
s05: installing a support piece at a corresponding position on the new ramming basis by combining the defect position information;
s06: using rammed soil to perform layered ramming along the new rammed foundation from bottom to top to form a city protecting soil body;
s07: trimming a slope line on the side wall of the city protecting soil body and performing old treatment on the side wall of the city protecting soil body to form a city wall repairing protection layer;
S08: paving two layers of soil layers on the top surface of the ruined urban wall, and paving a geogrid between the two layers of soil layers;
S09: performing drainage treatment on the top surface and the side wall of the site urban wall;
the step of S05 specifically includes: a notch is drilled on the wall side wall of the ruined site wall along the vertical direction by combining the horizontal position of the marking information, and the support piece is supported in the notch;
the step of S06 specifically includes:
Firstly, tamping and supplementing a bottom ramming layer, wherein an inclined strut is arranged at the position of widening one third of the outer edge of the bottom ramming layer, a ramming clamping plate is arranged, ramming soil is paved in an area surrounded by the ramming clamping plate, and a round head ramming stone is adopted for ramming to form the bottom ramming layer;
secondly, roughening the top wall of the bottom ramming layer, reserving offset at the top edge of the bottom ramming layer, arranging the ramming clamping plates at the offset, paving the ramming soil in the area surrounded by the ramming clamping plates, and tamping by adopting round-head ramming stones to form a second ramming layer;
Thirdly, roughening the top wall of the second ramming layer, reserving the offset at the top edge of the second ramming layer, arranging the ramming clamping plates at the offset, paving the ramming soil in the area surrounded by the ramming clamping plates, and tamping by adopting round-head ramming stones to form a third ramming layer;
fourth, repeating the third step until all ramming layers are completely rammed, and forming the city protecting soil body on the wall side wall of the site urban wall;
the step of S07 specifically includes: removing the ramming clamping plate, removing the offset trimming shovel on the outer side wall of the city protection soil body, trimming the city protection soil body into a slope form in combination with the site urban wall side wall pattern, and performing old trimming on the city protection soil body by referring to the site urban wall side wall surface pattern;
The step of S08 specifically includes:
Firstly, manually transferring raw soil of the soil layer to the top surface of the site urban wall, uniformly paving the raw soil on the top surface of the site urban wall, and tamping by using round-head ramming stones to form a first soil layer;
Secondly, fully paving a layer of geogrid on the top surface of the first layer of soil-attached layer, and fixing the geogrid and the first layer of soil-attached layer firmly;
Thirdly, uniformly paving a layer of raw soil of the soil layer on the geogrid, and tamping by using round-head ramming stones to form a second soil layer;
The support piece used in the step S05 comprises a cross rod, an inclined rod and a supporting rod, wherein the cross rod is horizontally arranged, the inclined rod is obliquely arranged, and the supporting rod is vertically arranged; the cross rod is welded with the diagonal rod, and the bottom end of the supporting rod is welded with the middle part of the cross rod; the top end of the supporting rod is welded with the middle part of the inclined rod; the cross rod is fixedly arranged on the ground through a fixed nail; the inclined rod and the supporting rod are respectively embedded in the notch, the position of the inclined rod is parallel to the wall surface of the ancient ruins and the outside wall of the inclined rod is level to the wall surface of the ancient ruins; wherein the cross rod, the diagonal rod and the supporting rod are formed by welding square steel pipes respectively, and the opening width of the notch is equal to the width of the square steel pipes.
2. The ramming patch construction method for repairing the site urban wall according to claim 1, wherein the step S01 specifically comprises the following steps:
Firstly, cleaning vegetation accumulated on the surface of the site urban wall throughout the year until the top surface and the side wall of the site urban wall are exposed, and adopting chemical agents to perfuse the root system for inhibiting the coarse root system of tall trees extending into the deep part of the site urban wall from growing continuously so as to automatically rot into soil;
And secondly, cleaning the wall of the site urban wall and the weathered soft soil layer of the root surface of the wall until the site urban wall exposes the original urban wall rammed soil, and taking the surface layer of the original urban wall rammed soil as the new rammed foundation.
3. The ramming patch construction method for repairing the site urban wall according to claim 1, wherein the step S02 is specifically:
and roughening the newly rammed foundation to ensure that the newly rammed soil body and the site urban wall are effectively connected and stubble are embedded to form a whole.
4. The ramming patch construction method for repairing the site urban wall according to claim 1, wherein the step of laying geotextile on the top surface of the new rammed foundation in S03 is specifically:
firstly, paving geotextile on the top surface of the new rammed foundation by adopting a method of overlapping and paving a stubble connecting part;
And secondly, fixing the geotextile with the top surface of the site urban wall by adopting a soil body covering and process deviation correcting method.
5. The ramming patch construction method for repairing the site urban wall according to claim 1, wherein the step S04 is specifically:
Scanning the periphery of the wall of the site city by using a flaw detector in an ultrasonic flaw detection mode; dividing the wall of the ruined wall into a plurality of horizontal cross bar areas along the vertical equidistance by combining the vertical scanning distance of a flaw detector probe, and respectively detecting each cross bar area; and judging the defect form and defect position inside the ruined urban wall by combining the energy information reflected by the ruined urban wall, and marking the corresponding side wall of the ruined urban wall.
6. The ramming patch construction method for repairing the site urban wall according to claim 1, wherein the step S09 is specifically:
And arranging drainage ditches on the top surface and the side wall of the ancient ruined wall, and enabling the drainage ditches on the top surface and the side wall of the ancient ruined wall to be communicated to form a whole.
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| CN107190758A (en) * | 2017-05-26 | 2017-09-22 | 中国铁路总公司 | A kind of slope construction method |
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| CN110512892B (en) * | 2019-08-30 | 2021-02-12 | 山西五建集团有限公司 | Construction method for repairing existing ancient city wall |
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