CN111734162A - Brick masonry balcony sunken roof-returning reinforcing treatment process - Google Patents

Abstract

The invention discloses a reinforcing treatment process for sinking and jacking a balcony of a brick masonry, which comprises excavation exploration, construction sequence definition, enclosure, protective dismantling, excavation breaking, grouting reinforcement condition analysis, protective reinforcing treatment, jacking and new component addition, settlement observation and closing. The invention has the beneficial effects that: when grouting is carried out, firstly, a steel pipe upright post is driven into the bottom surface, grouting is carried out, then a flange plate is welded on the steel pipe upright post, an L-shaped joist is bound, the L-shaped joist is supported through the flange plate to prevent the joist from sinking, and a template is installed to carry out joist concrete pouring, so that the treatment process has good treatment quality; the construction operation surface occupies a small area; the balcony back-jacking reinforcement treatment method has the advantage of small influence on surrounding underground pipelines, a large amount of experience is built for construction through the balcony back-jacking reinforcement treatment, and the construction method can be adjusted continuously, so that people can feel more comfortable when facing similar problems.

Description

Brick masonry balcony sunken roof-returning reinforcing treatment process

Technical Field

The invention relates to a balcony reinforcing process, in particular to a brick masonry balcony sunken roof returning reinforcing treatment process, and belongs to the technical field of community transformation construction.

Background

In some old districts, as the balcony wall foundation is arranged on a backfill soil layer of a main building or a septic tank fertilizer groove and does not directly fall on a bearing layer, and the main structure base is arranged on the bearing layer, the balcony wall and the main building on the first layer cannot be synchronously and uniformly settled, and the settlement difference is generated; in addition, the uneven backfill layer also causes uneven settlement of the balcony wall; the balcony wall and the foundation thereof are not effectively tied with the main structure, and cannot resist uneven settlement; unsmooth drainage in hospital, pipeline seepage, especially be the ponding region in the pavement, soak and erode through the month of the year, basement intensity seriously descends, the backfill sinks, above-mentioned factor leads to producing different degree between balcony and the major structure and sinks, causes the crack, consequently in order to prevent the whole sinking of old district brick brickwork balcony, needs to carry out the reinforcement processing of returning to the top.

Disclosure of Invention

The invention aims to solve the problems and provide a reinforcing treatment process for the sunken and back-jacked balcony of a brick masonry.

The invention realizes the purpose through the following technical scheme: a brick masonry balcony sunken roof returning reinforcing treatment process comprises the following steps:

firstly, excavating and exploring, namely selecting a representative balcony according to the site surveying condition, and arranging workers to perform actual excavation and inspection;

step two, the construction sequence is determined, the settlement condition is found out clearly in advance, the field construction sequence is determined according to the settlement condition of the balcony area, and the construction sequence is marked;

step three, enclosing, namely performing warning enclosure on a balcony range needing construction according to the construction sequence layout drawing requirement and construction arrangement, and mainly performing enclosure warning on an operation range and construction machinery;

step four, protective dismantling, wherein protective dismantling is adopted for the wall body which needs to be jacked back and returned to the original position when the settlement is large due to different balcony settlement degrees;

step five, breaking and excavating, namely breaking and excavating scattered water influencing grouting and back-to-top areas after the relevant requirements of the step three and the step four are finished according to the construction sequence determined in the step two, wherein large-scale equipment cannot be used due to limited sites, manual breaking and excavating are adopted, and local breaking and excavating are needed according to the arrangement of grouting points;

step six, grouting reinforcement condition analysis, namely dividing the balcony into the following 3 conditions according to site investigation, reference of drawings and trial excavation condition analysis:

1) the peripheral pipe network of the first layer of balcony is complex and is provided with household gas pipes, and under the condition that personnel and vehicles frequently come in and go out, the pipelines need to be checked one by one before excavation to be protected;

2) according to the serious condition of the crack, the crack with the width of 1cm or more is treated seriously, and the crack with the width of less than 1cm is treated normally;

3) for the situation that the settlement balcony has no concrete foundation, the settlement balcony falls on a backfill soil cushion layer, and the backfill soil is arranged 2m below the cushion layer;

seventhly, performing protective reinforcement treatment by adopting a P.0.32.5 common labelIntroducing Portland cement and water glass; adopting a pressure grouting mode, wherein the pressure is 0.2-0.7 MPa, the water-cement ratio range is 1.0-0.5, the water-cement ratio is large at the beginning of grouting, and the water-cement ratio is gradually adjusted to be small after grouting is started. The grouting amount is determined according to the size of a gap of a sunken stratum, the average slurry consumption per linear meter is estimated to be about 300kg, a grouting pipe is planned to be a manual hole forming method by adopting a Luoyang shovel driving method according to the field condition, and the grouting sequence is to jump the hole for grouting; by using

A flower tube grouting method comprises the steps of utilizing a Luoyang shovel to punch a 3m deep hole in a soil layer, and placing a flower tube into the hole. The length of the floral tube is 3m, one end of the floral tube is a 350mm long pointed end, the other end of the floral tube is normal, and regular small round holes are distributed on a pointed end tube body to facilitate uniform pulp discharge. The injected slurry is double-slurry, so that a foundation is easier to form; inserting the floral tubes into the soil layer 3m downwards along the balcony side wall body cushion layer, inserting 1C 14 steel bar with the length of 3m into the floral tubes, and then grouting;

step eight, ejecting and additionally arranging a new component, removing and cleaning gaps of the wall body, and ejecting the wall body after the ejection-returning position is removed; the method comprises the following steps:

constructing a vertical pipe, namely driving a steel pipe upright post into the bottom surface;

grouting, namely performing concrete grouting in the steel pipe upright;

welding a flange plate, and welding the flange plate on the steel pipe upright post after the concrete is solidified;

binding the L-shaped beam, binding the L-shaped joist on the flange plate, and supporting the L-shaped joist by the flange plate to prevent the joist from sinking;

and (5) pouring concrete, namely fixedly installing a template on the outer side of the L-shaped beam and pouring the joist concrete.

Step nine, settlement observation, namely setting settlement observation points on the balconies after grouting, wherein each balcony is not less than 2 observation points, monitoring once a day, sticking glass sheets on cracks on the top of the balconies to judge whether the cracks are enlarged continuously, and recovering the cracks and damaged parts of the balcony wall after the balconies and the main body structure are settled synchronously so as to ensure that the balcony wall is consistent with the original structure standard; during observation, the gap is temporarily blocked by adopting a foaming agent, so that the influence on the use of a resident is avoided;

closing up, after settlement observation is finished, performing closing up recovery indoors and outdoors, finishing cushion layer repair indoors, and performing ground decoration recovery according to user requirements.

As a still further scheme of the invention: in the fourth step, the dismantling process comprises:

1) construction preparation: and (5) finishing field maintenance and warning line pulling according to the requirements of the step three, in particular to an area with frequent access of personnel and vehicles. Preparing machines and articles such as a herringbone ladder, a cutting machine, an electric box, a screwdriver, a hammer and the like in advance;

2) cleaning on site: cleaning sundries needing to be removed, and meanwhile, conducting power failure and pipeline protection to avoid secondary damage;

3) protective demolition

(1) Cutting and dismantling the blocks according to the pulling condition of the field structure, ensuring the integrity of each block, and strictly forbidding the steel bars to be cut off randomly from the middle, so that the steel bars cannot be restored again;

(2) in the dismantling process, a temporary hoisting point is made, the hoisting point can be made of an expansion bolt and a hook, and an object is transferred to the ground and is strictly forbidden to be thrown;

(3) in the dismantling process, one person is dismantled and one person is stabilized to stare at a side station;

(4) in the cutting and chiseling process, window protection, particularly window glass protection is well performed;

(5) the position where the hanging ring cannot be adopted is dismantled in a customized mobile operation frame mode, so that the stability of the frame body is ensured;

4) stacking: and placing the removed article in a designated area.

As a still further scheme of the invention: in the fifth step, when excavation is performed:

1) adopting an electric pick to break concrete, intensively stacking the broken concrete, additionally stacking the dug soil, and strictly forbidding concrete blocks and soil to be stacked;

2) making dust fall measures during construction, preparing temporary water, and adopting a wet operation mode;

3) after the excavation is finished, covering the soil pile, and making environmental protection requirements;

4) the operation time is communicated with related personnel, so that complaints of users are avoided;

5) the filler of the crack gap between the indoor and outdoor is removed and cut, so that the separation of the wall body and the structure is ensured, and the influence of grouting on the structure is reduced.

As a still further scheme of the invention: in the sixth step, when grouting is performed:

1) when drilling or grouting, closely paying attention to various changes of the ground, and when finding that the ground is bulged and bleeds to form grout, adjusting the water-cement ratio, the grouting speed or performing intermittent grouting;

2) when the grouting amount is large and the pressure is not generated, firstly, the cement-water ratio is adjusted to be small and a proper amount of accelerating agent is added; secondly, grouting by stages by adopting a method of stopping grouting, and performing next grouting after the primary setting of the previous grout;

3) when the grouting stratum does not eat slurry and has high pressure, the water-cement ratio is adjusted to be high or a slurry flow channel is opened by clear water, and the water-cement ratio can be adjusted to be low once the slurry flow channel is opened;

4) the balcony grouting process is particularly concerned with the changes of the gas pipe and the ground, and the operation is stopped immediately when abnormal conditions are found;

5) the change condition of the balcony window is strictly concerned in the grouting process, grouting is stopped in time when deformation is found, and the window is removed when necessary.

As a still further scheme of the invention: in the step eight, the topping comprises:

1) removing and cleaning wall gaps: carrying out on-site measurement and distinguishing on balconies with crack widths larger than 1cm, coordinating residents according to on-site conditions to determine balconies needing to be jacked back, and removing and cleaning settlement gaps on the outer sides of the balconies by using iron chisels and angle grinders after the balconies needing to be jacked back are removed, so that the ground is ensured to be completely disconnected between the wall body and the structure; the indoor condition is according to the resident's requirement, cut the junction of the floor and balcony and reserve and return to the space of the top too;

2) breaking the back-jacking position: the back jacking position is arranged at a balcony wall corner and staggered with the grouting hole, and after the water is removed, backfill soil is excavated to leak out of a wall corner cushion layer, and a fulcrum is arranged;

3) and (3) wall body back jacking: according to the requirements of residents, the balcony is jacked back to the place where the balcony needs to be jacked, the place where the wall corner needs to be excavated is excavated downwards, a hydraulic jack is arranged, a small concrete foundation is made under the hydraulic jack, a steel plate with the thickness of 20mm is fixed under the original soil foundation, pressurization is carried out according to the field grouting condition, and the wall body crack is recovered to be within 1 cm; the cracks are blocked by coating epoxy high-strength repair materials on the surface layer.

The invention has the beneficial effects that: the brick masonry balcony sunken roof returning reinforcing treatment process is reasonable in design and good in treatment quality; the construction operation surface occupies a small area; has little influence on the surrounding underground pipelines.

Drawings

FIG. 1 is a schematic view of the construction process of the present invention;

FIG. 2 is a first layout drawing of the balcony grouting point grouting according to the present invention;

FIG. 3 is a second balcony grouting point grouting arrangement of the present invention;

FIG. 4 is a schematic view of the process of the present invention for returning and adding new components.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, a reinforcing treatment process for sinking and jacking a brick masonry balcony comprises the following steps:

firstly, excavating and exploring, namely selecting a representative balcony according to the site surveying condition, and arranging workers to perform actual excavation and inspection;

step two, the construction sequence is determined, the settlement condition is found out clearly in advance, the field construction sequence is determined according to the settlement condition of the balcony area, and the construction sequence is marked;

step three, enclosing, namely performing warning enclosure on a balcony range needing construction according to the construction sequence layout drawing requirement and construction arrangement, and mainly performing enclosure warning on an operation range and construction machinery;

step four, protective dismantling, wherein protective dismantling is adopted for the wall body which needs to be jacked back and returned to the original position when the settlement is large due to different balcony settlement degrees;

step five, breaking and excavating, namely breaking and excavating scattered water influencing grouting and back-to-top areas after the relevant requirements of the step three and the step four are finished according to the construction sequence determined in the step two, wherein large-scale equipment cannot be used due to limited sites, manual breaking and excavating are adopted, and local breaking and excavating are needed according to the arrangement of grouting points;

step six, grouting reinforcement condition analysis, namely dividing the balcony into the following 3 conditions according to site investigation, reference of drawings and trial excavation condition analysis:

1) the peripheral pipe network of the first layer of balcony is complex and is provided with household gas pipes, and under the condition that personnel and vehicles frequently come in and go out, the pipelines need to be checked one by one before excavation to be protected;

2) according to the serious condition of the crack, the crack with the width of 1cm or more is treated seriously, and the crack with the width of less than 1cm is treated normally;

3) for the situation that the settlement balcony has no concrete foundation, the settlement balcony falls on a backfill soil cushion layer, and the backfill soil is arranged 2m below the cushion layer;

seventhly, protective reinforcement treatment is carried out, wherein the label P.0.32.5 common Portland cement and water glass are adopted; adopting a pressure grouting mode, wherein the pressure is 0.2-0.7 MPa, the water-cement ratio range is 1.0-0.5, the water-cement ratio is large at the beginning of grouting, and the water-cement ratio is gradually adjusted to be small after grouting is started. The grouting amount is determined according to the size of a gap of a sunken stratum, the average slurry consumption per linear meter is estimated to be about 300kg, a grouting pipe is planned to be a manual hole forming method by adopting a Luoyang shovel driving method according to the field condition, and the grouting sequence is to jump the hole for grouting; by using

A flower tube grouting method comprises the steps of utilizing a Luoyang shovel to punch a 3m deep hole in a soil layer, and placing a flower tube into the hole. The length of the floral tube is 3m, one end is a 350mm long pointed end, and the other end isNormally, regular small round holes are distributed on the tip pipe body, so that uniform slurry discharge is facilitated. The injected slurry is double-slurry, so that a foundation is easier to form; inserting the floral tubes into the soil layer 3m downwards along the balcony side wall body cushion layer, inserting 1C 14 steel bar with the length of 3m into the floral tubes, and then grouting;

step eight, ejecting and additionally arranging a new component, removing and cleaning gaps of the wall body, and ejecting the wall body after the ejection-returning position is removed; the method comprises the following steps:

constructing a vertical pipe, namely driving a steel pipe upright post into the bottom surface;

grouting, namely performing concrete grouting in the steel pipe upright;

welding a flange plate, and welding the flange plate on the steel pipe upright post after the concrete is solidified;

binding the L-shaped beam, binding the L-shaped joist on the flange plate, and supporting the L-shaped joist by the flange plate to prevent the joist from sinking;

and (5) pouring concrete, namely fixedly installing a template on the outer side of the L-shaped beam and pouring the joist concrete.

Step nine, settlement observation, namely setting settlement observation points on the balconies after grouting, wherein each balcony is not less than 2 observation points, monitoring once a day, sticking glass sheets on cracks on the top of the balconies to judge whether the cracks are enlarged continuously, and recovering the cracks and damaged parts of the balcony wall after the balconies and the main body structure are settled synchronously so as to ensure that the balcony wall is consistent with the original structure standard; during observation, the gap is temporarily blocked by adopting a foaming agent, so that the influence on the use of a resident is avoided;

closing up, after settlement observation is finished, performing closing up recovery indoors and outdoors, finishing cushion layer repair indoors, and performing ground decoration recovery according to user requirements.

Further, in the embodiment of the present invention, in the fourth step, the dismantling process includes:

1) construction preparation: and (5) finishing field maintenance and warning line pulling according to the requirements of the step three, in particular to an area with frequent access of personnel and vehicles. Preparing machines and articles such as a herringbone ladder, a cutting machine, an electric box, a screwdriver, a hammer and the like in advance;

2) cleaning on site: cleaning sundries needing to be removed, and meanwhile, conducting power failure and pipeline protection to avoid secondary damage;

3) protective demolition

(1) Cutting and dismantling the blocks according to the pulling condition of the field structure, ensuring the integrity of each block, and strictly forbidding the steel bars to be cut off randomly from the middle, so that the steel bars cannot be restored again;

(2) in the dismantling process, a temporary hoisting point is made, the hoisting point can be made of an expansion bolt and a hook, and an object is transferred to the ground and is strictly forbidden to be thrown;

(3) in the dismantling process, one person is dismantled and one person is stabilized to stare at a side station;

(4) in the cutting and chiseling process, window protection, particularly window glass protection is well performed;

(5) the hanging ring position which cannot be adopted is dismantled in a customized mobile operation frame mode, and the stability of the frame body is guaranteed.

4) Stacking: and placing the removed article in a designated area.

Further, in the embodiment of the present invention, in the fifth step, when performing excavation:

1) adopting an electric pick to break concrete, intensively stacking the broken concrete, additionally stacking the dug soil, and strictly forbidding concrete blocks and soil to be stacked;

2) making dust fall measures during construction, preparing temporary water, and adopting a wet operation mode;

3) after the excavation is finished, covering the soil pile, and making environmental protection requirements;

4) the operation time is communicated with related personnel, so that complaints of users are avoided;

5) the filler of the crack gap between the indoor and outdoor is removed and cut, so that the separation of the wall body and the structure is ensured, and the influence of grouting on the structure is reduced.

Further, in the embodiment of the present invention, in the sixth step, when grouting is performed:

1) when drilling or grouting, closely paying attention to various changes of the ground, and when finding that the ground is bulged and bleeds to form grout, adjusting the water-cement ratio, the grouting speed or performing intermittent grouting;

2) when the grouting amount is large and the pressure is not generated, firstly, the cement-water ratio is adjusted to be small and a proper amount of accelerating agent is added; secondly, grouting by stages by adopting a method of stopping grouting, and performing next grouting after the primary setting of the previous grout;

3) when the grouting stratum does not eat slurry and has high pressure, the water-cement ratio is adjusted to be high or a slurry flow channel is opened by clear water, and the water-cement ratio can be adjusted to be low once the slurry flow channel is opened;

4) the balcony grouting process is particularly concerned with the changes of the gas pipe and the ground, and the operation is stopped immediately when abnormal conditions are found;

5) the change condition of the balcony window is strictly concerned in the grouting process, grouting is stopped in time when deformation is found, and the window is removed when necessary.

Further, in this embodiment of the present invention, in the step eight, performing the topping includes:

1) removing and cleaning wall gaps: the balcony with the crack width larger than 1cm is measured and distinguished on site, a coordinating resident determines the balcony needing to be jacked back according to site conditions (the operation range accords with the balcony needing to be jacked back and the balcony without gas pipes is not influenced), after the balcony needing to be jacked back is dismantled, a settlement gap on the outer side of the balcony is removed by a chisel iron and an angle grinder, and the ground ensures that the wall and the structure are completely disconnected; the indoor condition is according to the resident's requirement, cut the junction of the floor and balcony and reserve and return to the space of the top too;

2) breaking the back-jacking position: the back jacking position is arranged at a balcony wall corner and staggered with the grouting hole, and after the water is removed, backfill soil is excavated to leak out of a wall corner cushion layer, and a fulcrum is arranged;

3) and (3) wall body back jacking: according to the requirements of residents, a balcony is required to be jacked back, the wall corner is excavated downwards, a hydraulic jack is arranged, a small concrete foundation (200 x 120) is made under the jack, a steel plate with the thickness of 20mm is fixed under the original mortar foundation, and the wall crack is recovered to be within 1cm by pressurizing according to the field grouting condition; the cracks are blocked by coating epoxy high-strength repair materials on the surface layer.

The working principle is as follows: when the brick masonry balcony sunken roof returning reinforcing treatment process is used, all the sunken walls can be regarded as independent structures according to the current situation and analysis, and are not related to the main structure. The water supply and drainage and sewage pipelines in the hospital are overhauled and water leakage points are eliminated; aiming at the problem of cracks of the first-layer balcony wall, a scheme for maintaining balcony reinforcement treatment is formed

The main measures of the reinforcement treatment are as follows:

(1) removing and cleaning the wall cracks of the sedimentation units in batches, and breaking and excavating scattered water to form a completely independent structure;

(2) and (5) carrying out reinforcement treatment one by one according to the arrangement of site construction. The reinforcing measures are as follows: performing micro-expansion grouting on the backfill soil layer above the reverse top and the bearing layer of the settlement wall to strengthen the foundation;

(3) and after the treatment is finished, carrying out settlement observation for 1 month, carrying out surface layer repair according to the requirement, and carrying out treatment again on the re-agreed scheme not meeting the requirement until the scheme is qualified.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. The utility model provides a brick masonry balcony sinks to back to push up and consolidates processing technology which characterized in that: the method comprises the following steps:

firstly, excavating and exploring, namely selecting a representative balcony according to the site surveying condition, and arranging workers to perform actual excavation and inspection;

step two, the construction sequence is determined, the settlement condition is found out clearly in advance, the field construction sequence is determined according to the settlement condition of the balcony area, and the construction sequence is marked;

step three, enclosing, namely performing warning enclosure on a balcony range needing construction according to the construction sequence layout drawing requirement and construction arrangement, and mainly performing enclosure warning on an operation range and construction machinery;

step four, protective dismantling, wherein protective dismantling is adopted for the wall body which needs to be jacked back and returned to the original position when the settlement is large due to different balcony settlement degrees;

step five, breaking and excavating, namely breaking and excavating scattered water influencing grouting and back-to-top areas after the relevant requirements of the step three and the step four are finished according to the construction sequence determined in the step two, wherein large-scale equipment cannot be used due to limited sites, manual breaking and excavating are adopted, and local breaking and excavating are needed according to the arrangement of grouting points;

step six, grouting reinforcement condition analysis, namely dividing the balcony into the following 3 conditions according to site investigation, reference of drawings and trial excavation condition analysis:

1) the peripheral pipe network of the first layer of balcony is complex and is provided with household gas pipes, and under the condition that personnel and vehicles frequently come in and go out, the pipelines need to be checked one by one before excavation to be protected;

2) according to the serious condition of the crack, the crack with the width of 1cm or more is treated seriously, and the crack with the width of less than 1cm is treated normally;

3) for the situation that the settlement balcony has no concrete foundation, the settlement balcony falls on a backfill soil cushion layer, and the backfill soil is arranged 2m below the cushion layer;

seventhly, protective reinforcement treatment is carried out, wherein the label P.0.32.5 common Portland cement and water glass are adopted; adopting a pressure grouting mode, wherein the pressure is 0.2-0.7 MPa, the water-cement ratio range is 1.0-0.5, the water-cement ratio is large at the beginning of grouting, and the water-cement ratio is gradually adjusted to be small after grouting is started. The grouting amount is determined according to the size of the gap of the subsided stratum, the average slurry consumption per linear meter is estimated to be about 300kg, and a grouting pipe is used according to the site situationThe condition is planned to be that a Luoyang shovel driving method is adopted to form holes manually, and the holes are jumped in the grouting sequence for grouting; by using

A flower tube grouting method comprises the steps of utilizing a Luoyang shovel to punch a 3m deep hole in a soil layer, and placing a flower tube into the hole. The length of the floral tube is 3m, one end of the floral tube is a 350mm long pointed end, the other end of the floral tube is normal, and regular small round holes are distributed on a pointed end tube body to facilitate uniform pulp discharge. The injected slurry is double-slurry, so that a foundation is easier to form; inserting the floral tubes into the soil layer 3m downwards along the balcony side wall body cushion layer, inserting 1C 14 steel bar with the length of 3m into the floral tubes, and then grouting;

step eight, ejecting and additionally arranging a new component, removing and cleaning gaps of the wall body, and ejecting the wall body after the ejection-returning position is removed; the method comprises the following steps:

constructing a vertical pipe, namely driving a steel pipe upright post into the bottom surface;

grouting, namely performing concrete grouting in the steel pipe upright;

welding a flange plate, and welding the flange plate on the steel pipe upright post after the concrete is solidified;

binding the L-shaped beam, binding the L-shaped joist on the flange plate, and supporting the L-shaped joist by the flange plate to prevent the joist from sinking;

and (5) pouring concrete, namely fixedly installing a template on the outer side of the L-shaped beam and pouring the joist concrete.

Step nine, settlement observation, namely setting settlement observation points on the balconies after grouting, wherein each balcony is not less than 2 observation points, monitoring once a day, sticking glass sheets on cracks on the top of the balconies to judge whether the cracks are enlarged continuously, and recovering the cracks and damaged parts of the balcony wall after the balconies and the main body structure are settled synchronously so as to ensure that the balcony wall is consistent with the original structure standard; during observation, the gap is temporarily blocked by adopting a foaming agent, so that the influence on the use of a resident is avoided;

closing up, after settlement observation is finished, performing closing up recovery indoors and outdoors, finishing cushion layer repair indoors, and performing ground decoration recovery according to user requirements.

2. The process of claim 1, wherein the process comprises the following steps: in the fourth step, the dismantling process comprises:

1) construction preparation: and (5) finishing field maintenance and warning line pulling according to the requirements of the step three, in particular to an area with frequent access of personnel and vehicles. Preparing machines and articles such as a herringbone ladder, a cutting machine, an electric box, a screwdriver, a hammer and the like in advance;

2) cleaning on site: cleaning sundries needing to be removed, and meanwhile, conducting power failure and pipeline protection to avoid secondary damage;

3) protective demolition

(1) Cutting and dismantling the blocks according to the pulling condition of the field structure, ensuring the integrity of each block, and strictly forbidding the steel bars to be cut off randomly from the middle, so that the steel bars cannot be restored again;

(2) in the dismantling process, a temporary hoisting point is made, the hoisting point can be made of an expansion bolt and a hook, and an object is transferred to the ground and is strictly forbidden to be thrown;

(3) in the dismantling process, one person is dismantled and one person is stabilized to stare at a side station;

(4) in the cutting and chiseling process, window protection, particularly window glass protection is well performed;

(5) the position where the hanging ring cannot be adopted is dismantled in a customized mobile operation frame mode, so that the stability of the frame body is ensured;

4) stacking: and placing the removed article in a designated area.

3. The process of claim 1, wherein the process comprises the following steps: in the fifth step, when excavation is performed:

1) adopting an electric pick to break concrete, intensively stacking the broken concrete, additionally stacking the dug soil, and strictly forbidding concrete blocks and soil to be stacked;

2) making dust fall measures during construction, preparing temporary water, and adopting a wet operation mode;

3) after the excavation is finished, covering the soil pile, and making environmental protection requirements;

4) the operation time is communicated with related personnel, so that complaints of users are avoided;

5) the filler of the crack gap between the indoor and outdoor is removed and cut, so that the separation of the wall body and the structure is ensured, and the influence of grouting on the structure is reduced.

4. The process of claim 1, wherein the process comprises the following steps: in the sixth step, when grouting is performed:

1) when drilling or grouting, closely paying attention to various changes of the ground, and when finding that the ground is bulged and bleeds to form grout, adjusting the water-cement ratio, the grouting speed or performing intermittent grouting;

2) when the grouting amount is large and the pressure is not generated, firstly, the cement-water ratio is adjusted to be small and a proper amount of accelerating agent is added; secondly, grouting by stages by adopting a method of stopping grouting, and performing next grouting after the primary setting of the previous grout;

3) when the grouting stratum does not eat slurry and has high pressure, the water-cement ratio is adjusted to be high or a slurry flow channel is opened by clear water, and the water-cement ratio can be adjusted to be low once the slurry flow channel is opened;

4) the balcony grouting process is particularly concerned with the changes of the gas pipe and the ground, and the operation is stopped immediately when abnormal conditions are found;

5) the change condition of the balcony window is strictly concerned in the grouting process, grouting is stopped in time when deformation is found, and the window is removed when necessary.

5. The process of claim 1, wherein the process comprises the following steps: in the step eight, the topping comprises:

1) removing and cleaning wall gaps: carrying out on-site measurement and distinguishing on balconies with crack widths larger than 1cm, coordinating residents according to on-site conditions to determine balconies needing to be jacked back, and removing and cleaning settlement gaps on the outer sides of the balconies by using iron chisels and angle grinders after the balconies needing to be jacked back are removed, so that the ground is ensured to be completely disconnected between the wall body and the structure; the indoor condition is according to the resident's requirement, cut the junction of the floor and balcony and reserve and return to the space of the top too;

2) breaking the back-jacking position: the back jacking position is arranged at a balcony wall corner and staggered with the grouting hole, and after the water is removed, backfill soil is excavated to leak out of a wall corner cushion layer, and a fulcrum is arranged;

3) and (3) wall body back jacking: according to the requirements of residents, the balcony is jacked back to the place where the balcony needs to be jacked, the place where the wall corner needs to be excavated is excavated downwards, a hydraulic jack is arranged, a small concrete foundation is made under the hydraulic jack, a steel plate with the thickness of 20mm is fixed under the original soil foundation, pressurization is carried out according to the field grouting condition, and the wall body crack is recovered to be within 1 cm; the cracks are blocked by coating epoxy high-strength repair materials on the surface layer.

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