CN112502207A - Portable sheet flexible jacking device applied to building jacking deviation correction - Google Patents
Portable sheet flexible jacking device applied to building jacking deviation correction Download PDFInfo
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- CN112502207A CN112502207A CN202011242721.5A CN202011242721A CN112502207A CN 112502207 A CN112502207 A CN 112502207A CN 202011242721 A CN202011242721 A CN 202011242721A CN 112502207 A CN112502207 A CN 112502207A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
- E02D35/005—Lowering or lifting of foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/007—Resins including glasfibers
Abstract
The invention discloses a portable sheet flexible jacking device applied to jacking and deviation rectifying of a building, wherein a honeycomb deformation body is composed of honeycomb laminate plates which are sequentially arranged from top to bottom in a laminated manner, honeycomb holes which are uniformly distributed at intervals are respectively formed in each honeycomb laminate plate, the honeycomb holes of two adjacent honeycomb laminate plates are arranged in a staggered manner, all the honeycomb holes of the honeycomb deformation body are communicated and form a jacking pressurization cavity, and all the honeycomb laminate plates are extruded into an integral structure; the lower surface of the honeycomb-shaped deformation body is ultrasonically welded with a deformation body bottom plate, the left, right, front and back of the honeycomb-shaped deformation body are ultrasonically welded with deformation body side plates respectively, the upper surface of the honeycomb-shaped deformation body is ultrasonically welded with a flexible deformation body top plate, and the flexible deformation body top plate is provided with a pressure valve. The invention has the advantages of light weight, low initial height, low requirement on a jacking interface, large jacking height ratio and ideal jacking effect.
Description
Technical Field
The invention relates to the technical field of building jacking deviation correction, in particular to a portable sheet flexible jacking device applied to building jacking deviation correction.
Background
In the current construction project, most buildings such as frame structures, masonry structures, bridge structures and the like are built on uneven soil layers due to complexity and uncertainty of soil layers of building foundations, when the buildings are affected by long-term dynamic load, earthquake motion or self-weight, the buildings incline or settle unevenly to different degrees, which can cause cracking of local members of the buildings, further affect the use function of the buildings, and finally develop that the functions of the buildings are completely lost or collapsed. Therefore, on the basis of good conditions, the building is corrected by adopting a jacking method, so that the building can be righted, and the building is reinforced to recover the use function of the building, and the jacking method correction is an important correction measure in the current engineering.
The frame structure is usually corrected by a broken column jacking method, and the bridge structure is usually corrected by a centralized jacking method; it should be noted that the jacking deviation rectifying process is generally divided into five steps, specifically: step 1, determining a jacking position; step 2, installing a jacking device; step 3, jacking and monitoring; step 4, stabilizing the position of the building; and 5, withdrawing the jacking equipment. At actual jacking in-process of rectifying, it is the location installation of jacking equipment and withdraw from comparatively loaded down with trivial details work, its reason lies in: the jacking equipment is usually a jack, and has the advantages of heavy weight, recovery requirement, large requirement on initial jacking space, small jacking height ratio, high requirements on interface strength and flatness of a jacking part and poor working stability; this affects the progress and safety of jacking deviation correction to some extent.
It should be further pointed out that, because the traditional jacking equipment has heavy weight, large volume and high requirement on the jacking working surface, the distribution of the jacking equipment is relatively discrete, the distribution uniformity of jacking points is limited by a jacking device in the jacking deviation rectifying process of a building, and the stress concentration deformation of jacking parts is easy to occur; in addition, the deformation of the jacking equipment is inconsistent, and the building structure is easy to crack. Therefore, the jacking equipment with high rigidity causes the problem of unsatisfactory jacking effect of the structure.
Disclosure of Invention
The invention aims to provide a portable sheet flexible jacking device applied to building jacking deviation correction, aiming at the defects of the prior art.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
A portable sheet flexible jacking device applied to building jacking deviation correction comprises a honeycomb deformation body, wherein the honeycomb deformation body is composed of honeycomb laminates which are sequentially arranged from top to bottom in a laminated mode, honeycomb holes which are uniformly distributed at intervals and are in regular hexagon shapes are formed in each honeycomb laminate, the honeycomb holes of each honeycomb laminate are completely penetrated up and down respectively, the honeycomb holes of two adjacent honeycomb laminates are arranged in a staggered mode, all the honeycomb holes of the honeycomb deformation body are communicated and form a jacking pressurization cavity, and all the honeycomb laminates are extruded into an integral structure;
the lower surface of the honeycomb-shaped deformation body is ultrasonically welded with a deformation body bottom plate, the left side surface, the right side surface, the front side surface and the rear side surface of the honeycomb-shaped deformation body are respectively ultrasonically welded with deformation body side plates, the upper surface of the honeycomb-shaped deformation body is ultrasonically welded with a deformation body flexible top plate, and the deformation body flexible top plate is provided with a pressure valve communicated with a honeycomb hole of the honeycomb laminate on the uppermost layer;
the portable sheet flexible jacking device applied to building jacking deviation correction is prepared by the following method, and specifically comprises the following preparation steps:
a preparation step 2 of sending the extrusion molding material obtained in the preparation step 1 into an extruding machine, and molding a honeycomb-shaped deformation body, a deformation body bottom plate, deformation body side plates and a deformation body flexible top plate through high-pressure extrusion molding of the extruding machine;
the manufacturing method comprises the following steps of (3) mounting a pressure valve on a flexible top plate of the deformable body, welding a bottom plate of the deformable body on the lower surface of the honeycomb deformable body in an ultrasonic welding mode, welding side plates of the deformable body on the corresponding left side surface, right side surface, front side surface and rear side surface of the honeycomb deformable body in an ultrasonic welding mode, and welding the flexible top plate of the deformable body on the upper surface of the honeycomb deformable body in an ultrasonic welding mode;
the portable sheet flexible jacking device applied to the jacking and deviation rectifying of the building is constructed by adopting the following method, and specifically comprises the following construction steps:
the construction method comprises the following steps that 1, a jacking part of a building needing jacking deviation correction is disconnected, and a working surface is cut;
2, placing the portable sheet flexible jacking device applied to jacking and rectifying the building on a working surface;
a construction step 3, connecting a pressure valve of the flexible top plate of the deformation body with a pump station through a pressure pipeline;
and 5, after the modified cement is solidified, removing the pressure valve and the pressure pipeline.
Wherein, the coagulant used in the preparation step 1 is a dibenzoyl peroxide-tertiary amine system coagulant.
Wherein the solidification initiator is cyclohexanone peroxide, benzoyl peroxide or cobalt naphthenate.
Wherein, in the preparation step 2, the extrusion pressure of the extrusion molding of the extruder is 2000N per square centimeter, and the extrusion molding temperature is 80-120 ℃.
Wherein the thickening agent is cellulose ether.
Wherein the water reducing agent is a melamine water reducing agent.
Wherein, the coagulant used in the construction step 4 is one or a mixture of at least two of calcium chloride, calcium nitrate, calcium aluminate and aluminum sulfate.
Wherein the micro-expansion agent is an early strength micro-expansion agent.
The upper surface of the flexible top plate of the deformation body is provided with contact bumps which are uniformly distributed and respectively protrude upwards.
Wherein the glass fiber adopted in the preparation step 1 is short fiber, the diameter value of the glass fiber is 15-25 microns, and the length value of the glass fiber is 8-12 millimeters.
The invention has the beneficial effects that: the invention relates to a portable sheet flexible jacking device applied to building jacking deviation correction, which comprises a honeycomb deformation body, wherein the honeycomb deformation body is composed of honeycomb laminate plates which are sequentially arranged from top to bottom in a laminated mode, honeycomb holes which are uniformly distributed at intervals and are in regular hexagon shapes are formed in each honeycomb laminate plate respectively, the honeycomb holes of each honeycomb laminate plate are completely penetrated up and down respectively, the honeycomb holes of two adjacent honeycomb laminate plates are arranged in a staggered mode, all the honeycomb holes of the honeycomb deformation body are communicated and form a jacking pressurization cavity, and all the honeycomb laminate plates are extruded into an integral structure; the lower surface of the honeycomb-shaped deformation body is ultrasonically welded with a deformation body bottom plate, the left side surface, the right side surface, the front side surface and the rear side surface of the honeycomb-shaped deformation body are respectively ultrasonically welded with deformation body side plates, the upper surface of the honeycomb-shaped deformation body is ultrasonically welded with a deformation body flexible top plate, and the deformation body flexible top plate is provided with a pressure valve communicated with a honeycomb hole of the honeycomb laminate on the uppermost layer; the portable sheet flexible jacking device applied to building jacking deviation correction is prepared by the following method, and specifically comprises the following preparation steps: preparation step 1, preparing an extrusion molding material according to the following steps of high polymer resin: the volume ratio of the glass fiber is 4: 1, accurately measuring high polymer resin and glass fiber, wherein a base material of an extrusion molding material consists of the high polymer resin and the glass fiber, then placing the measured high polymer resin in stirring equipment for stirring, adding a coagulant, a solidification initiator and graphene in the stirring process, wherein the addition amount of the coagulant is 0.1-0.3% of the mass of the base material, the addition amount of the solidification initiator is 0.2-0.4% of the mass of the base material, and the addition amount of the graphene is 0.1-0.3% of the mass of the base material; after a coagulant, a solidification initiator and graphene are added into the high polymer resin and stirred, placing glass fibers into the high polymer resin added with the coagulant, the solidification initiator and the graphene for glass fiber gum dipping treatment, and stirring during the gum dipping treatment to obtain an extrusion molding material; a preparation step 2 of sending the extrusion molding material obtained in the preparation step 1 into an extruding machine, and molding a honeycomb-shaped deformation body, a deformation body bottom plate, deformation body side plates and a deformation body flexible top plate through high-pressure extrusion molding of the extruding machine; the manufacturing method comprises the following steps of (3) mounting a pressure valve on a flexible top plate of the deformable body, welding a bottom plate of the deformable body on the lower surface of the honeycomb deformable body in an ultrasonic welding mode, welding side plates of the deformable body on the corresponding left side surface, right side surface, front side surface and rear side surface of the honeycomb deformable body in an ultrasonic welding mode, and welding the flexible top plate of the deformable body on the upper surface of the honeycomb deformable body in an ultrasonic welding mode; the portable sheet flexible jacking device applied to the jacking and deviation rectifying of the building is constructed by adopting the following method, and specifically comprises the following construction steps: the construction method comprises the following steps that 1, a jacking part of a building needing jacking deviation correction is disconnected, and a working surface is cut; 2, placing the portable sheet flexible jacking device applied to jacking and rectifying the building on a working surface; a construction step 3, connecting a pressure valve of the flexible top plate of the deformation body with a pump station through a pressure pipeline; construction step 4, starting a pump station, sending modified cement into a jacking pressurization cavity of the honeycomb deformation body through a pressurization pipeline and a pressurization valve by the pump station, wherein the modified cement comprises the following materials in parts by weight, specifically, PO52.5 cement: sand: water: thickening agent: water reducing agent: setting accelerator: micro-swelling agent = 32.8%: 55.2%: 11.7%: 0.08%: 0.16%: 0.04%: 0.02 percent; and 5, after the modified cement is solidified, removing the pressure valve and the pressure pipeline. The invention has the advantages of light weight, low initial height, low requirement on a jacking interface, large jacking height ratio and ideal jacking effect.
Drawings
The invention will be further described with reference to the drawings to which, however, the embodiments shown in the drawings do not constitute any limitation.
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of another embodiment of the present invention.
Included in fig. 1 and 2 are:
1-honeycomb deforming body 11-honeycomb laminate
2-deformation body side plate 3-deformation body flexible top plate
4-pressure valve.
Detailed Description
The present invention will be described below with reference to specific embodiments.
As shown in fig. 1 and 2, a be applied to flexible jacking device of portable slice of building jacking rectifying, it is including honeycomb variant 1, honeycomb variant 1 comprises from last to stacking gradually honeycomb plywood 11 of arranging down, each honeycomb plywood 11 has been seted up respectively and has been the honeycomb holes that even interval distribution just is regular hexagon shape respectively, each honeycomb hole of each honeycomb plywood 11 runs through completely from top to bottom respectively, the honeycomb holes staggered arrangement of two adjacent honeycomb plywood 11, all honeycomb holes of honeycomb variant 1 communicate and form jacking pressurization cavity, all honeycomb plywood 11 extrusion molding becomes an organic whole structure.
Wherein, the lower surface ultrasonic welding of honeycomb variant 1 has the variant bottom plate, and the left surface, right flank, leading flank, the trailing flank ultrasonic welding of honeycomb variant 1 have the variant curb plate 2 respectively, and the upper surface ultrasonic welding of honeycomb variant 1 has the flexible roof of variant 3, and the flexible roof of variant 3 is installed with the forcing valve 4 that communicates with a honeycomb hole of the honeycomb plywood 11 of the superiors.
The portable sheet flexible jacking device applied to the jacking and deviation rectifying of the building is prepared by the following method, and specifically comprises the following preparation steps:
by adding the coagulant in the stirring process, the coagulant can promote organic matters and peroxide in the high polymer resin to generate free radicals at room temperature, so that the coagulation is promoted and the reaction temperature of the high polymer resin is reduced; the solidification initiator can promote double bonds in monomer molecules or linear molecular chains to be activated into free radicals so as to promote the solidification of the matrix material, and the solidification initiator and the coagulant are required to be matched for use because the solidification initiator can generate a large amount of heat; the graphene can be adhered to the surface of the glass fiber, so that the bonding strength between the glass fiber and the high polymer resin is changed, and the strength of the material can be improved to the maximum extent;
a preparation step 2 of sending the extrusion molding material obtained in the preparation step 1 into an extruding machine, and molding the honeycomb-shaped deformation body 1, the deformation body bottom plate, the deformation body side plate 2 and the deformation body flexible top plate 3 through high-pressure extrusion molding of the extruding machine; it should be explained that, in the process of extrusion molding the honeycomb deformation body 1 by an extrusion molding machine, a layer of honeycomb laminate 11 is firstly produced by extrusion molding, and then is horizontally cut by an extrusion molding opening to form a staggered layer, when the extrusion molding production of the second layer of honeycomb laminate 11 is carried out, the honeycomb laminate 11 of the first layer is locked, so that the staggered arrangement of honeycomb holes of two adjacent honeycomb laminates 11 can be ensured, and all honeycomb holes of the honeycomb deformation body 1 are communicated and form a jacking pressurization chamber;
and 3, mounting a pressurizing valve 4 on the flexible top plate 3 of the deformable body, welding the bottom plate of the deformable body on the lower surface of the honeycomb deformable body 1 in an ultrasonic welding mode, welding the side plates 2 of the deformable body on the corresponding left side surface, right side surface, front side surface and back side surface of the honeycomb deformable body 1 in an ultrasonic welding mode, and welding the flexible top plate 3 of the deformable body on the upper surface of the honeycomb deformable body 1 in an ultrasonic welding mode.
It should be further pointed out that the portable sheet flexible jacking device applied to building jacking deviation correction is constructed by the following method, and specifically comprises the following construction steps:
the construction method comprises the following steps that 1, a jacking part of a building needing jacking deviation correction is disconnected, and a working surface is cut;
2, placing the portable sheet flexible jacking device applied to jacking and rectifying the building on a working surface;
a construction step 3, connecting a pressure valve 4 of the flexible top plate 3 of the deformation body with a pump station through a pressure pipeline;
and 5, after the modified cement is solidified, removing the pressure valve 4 and the pressure pipeline.
It should be explained that, in the preparation process of the portable sheet-shaped flexible jacking device applied to building jacking deviation correction, the coagulant adopted in the preparation step 1 is dibenzoyl peroxide-tertiary amine system coagulant, and the solidification initiator is cyclohexanone peroxide, benzoyl peroxide or cobalt naphthenate; in addition, in the preparation step 2, the extrusion pressure for extrusion molding by an extruder is 2000N per square centimeter, and the extrusion molding temperature is 80-120 ℃.
In the construction process of the portable sheet-shaped flexible jacking device applied to building jacking deviation correction, the thickening agent adopted by the modified cement is cellulose ether, the water reducing agent adopted by the modified cement is a melamine water reducing agent, the coagulant adopted by the modified cement is one or a mixture of at least two of calcium chloride, calcium nitrate, calcium aluminate and aluminum sulfate, and the micro-expansion agent adopted by the modified cement is an early-strength micro-expansion agent.
In a preferred embodiment, the upper surface of the flexible top plate 3 of the deformable body is provided with uniformly distributed contact bumps which are respectively convex upwards.
Compared with the traditional jack deviation rectifying and jacking device, the portable sheet flexible jacking device applied to building jacking deviation rectifying has the following advantages:
1. the honeycomb deformation body 1 is used as an internal structure, the characteristics of large deformation, flexibility and light weight can be realized by adopting a honeycomb structure design, and because honeycomb holes of two adjacent honeycomb laminate plates 11 are arranged in a staggered manner and all the honeycomb holes of the honeycomb deformation body 1 are communicated and form a jacking pressurization chamber, the pressurization is carried out at any honeycomb hole position of the honeycomb laminate plate 11 at the uppermost layer, and the modified cement during construction can be uniformly distributed at each position of the jacking pressurization chamber; the honeycomb structure can realize flexible deformation in one direction, and has self-locking performance in any other direction, so that the stability of the device in the pressurizing process can be ensured; for the self-locking performance, the honeycomb holes are in a regular hexagon shape, and along the hexagon direction, the honeycomb structures are connected with each other, so that the direction structure is not deformed;
2. the honeycomb deforming body 1, the deforming body bottom plate, the deforming body side plate 2 and the deforming body flexible top plate 3 are formed by extrusion molding of the same materials, the deforming body bottom plate, the deforming body side plate 2 and the deforming body flexible top plate 3 are welded to the honeycomb deforming body 1 in an ultrasonic welding mode respectively, and the ultrasonic welding mode has the advantages of short welding time, equal connection strength to a material body and good sealing performance;
3. according to the invention, the honeycomb deforming body 1, the deforming body bottom plate, the deforming body side plates 2 and the deforming body flexible top plate 3 adopt high polymer resin and glass fiber as base materials, the high polymer resin can meet the requirement of pressurization jacking deformation, and the glass fiber can play a role of reinforcement so as to ensure the stability of the whole honeycomb structure;
4. the honeycomb-shaped deformation body 1 is used as a main body structure, the honeycomb-shaped structure has deformation advantages, and the whole initial thickness/maximum deformation thickness =13-18 times, which is far higher than that of a common jack by 0.5-0.8; the installation difficulty of the jacking device is greatly reduced due to the small initial thickness of the whole structure, the height of the working surface of the jacking part of the building can be effectively reduced, the damage of the installation of jacking equipment to the building can be reduced due to the small height of the jacking working surface, and only a small part of the building needs to be excavated;
5. in the process of utilizing the invention to jack and rectify deviation of a building, the contact surfaces of the flexible top plate 3 of the deformation body and the building are all internal modified cement pressure surfaces, the pressure surface/contact stress surface = more than 95%, and the common jack is about 50%; under the condition of the same load grade, compared with the traditional jack, the jack can be made smaller, so that the installation difficulty can be reduced; the invention can use lower modified cement pressure to reach jacking load, because the effective area of the invention is large when the same load is carried, the invention can reduce the modified cement pressure by shading, namely reducing the working load of the pressurizing equipment, and simultaneously reducing the damage risk of the whole set of equipment;
6. the invention can realize flexible deformation, thus realizing the loading with the upper surface and the lower surface being not parallel obviously, while the traditional jacking jack can not realize the loading with the upper surface and the lower surface being not parallel obviously;
7. during jacking deviation rectifying construction, modified cement paste is used for pressurization, and the modified cement paste is added with a micro-expanding agent, so that no volume change is caused in the solidification process, and the stable stress of a jacking device is ensured; after the modified cement slurry is solidified, only the pressure valve 4 and the pressure pipeline need to be removed, so that the removal cost and the return transportation pressure can be reduced.
The invention has the advantages of light weight, low initial height, low requirement on a jacking interface, large jacking height ratio and ideal jacking effect.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. The utility model provides a be applied to flexible jacking device of portable slice that building jacking was rectified which characterized in that: the honeycomb deformation body comprises a honeycomb deformation body (1), wherein the honeycomb deformation body (1) is formed by sequentially stacking honeycomb laminate plates (11) from top to bottom, honeycomb holes which are uniformly distributed at intervals and are in regular hexagon shapes are respectively formed in each honeycomb laminate plate (11), the honeycomb holes of each honeycomb laminate plate (11) are respectively and completely penetrated up and down, the honeycomb holes of two adjacent honeycomb laminate plates (11) are staggered, all the honeycomb holes of the honeycomb deformation body (1) are communicated and form a jacking pressurization cavity, and all the honeycomb laminate plates (11) are extruded into an integral structure;
the lower surface of the honeycomb-shaped deformation body (1) is ultrasonically welded with a deformation body bottom plate, the left side surface, the right side surface, the front side surface and the rear side surface of the honeycomb-shaped deformation body (1) are respectively ultrasonically welded with deformation body side plates (2), the upper surface of the honeycomb-shaped deformation body (1) is ultrasonically welded with a deformation body flexible top plate (3), and the deformation body flexible top plate (3) is provided with a pressure valve (4) communicated with a honeycomb hole of the uppermost honeycomb laminate (11);
the portable sheet flexible jacking device applied to building jacking deviation correction is prepared by the following method, and specifically comprises the following preparation steps:
preparation step 1, preparing an extrusion molding material according to the following steps of high polymer resin: the volume ratio of the glass fiber is 4: 1, accurately measuring high polymer resin and glass fiber, wherein a base material of an extrusion molding material consists of the high polymer resin and the glass fiber, then placing the measured high polymer resin in stirring equipment for stirring, adding a coagulant, a solidification initiator and graphene in the stirring process, wherein the addition amount of the coagulant is 0.1-0.3% of the mass of the base material, the addition amount of the solidification initiator is 0.2-0.4% of the mass of the base material, and the addition amount of the graphene is 0.1-0.3% of the mass of the base material; after a coagulant, a solidification initiator and graphene are added into the high polymer resin and stirred, placing glass fibers into the high polymer resin added with the coagulant, the solidification initiator and the graphene for glass fiber gum dipping treatment, and stirring during the gum dipping treatment to obtain an extrusion molding material;
a preparation step 2 of sending the extrusion molding material obtained in the preparation step 1 into an extruding machine, and molding a honeycomb-shaped deformation body (1), a deformation body bottom plate, deformation body side plates (2) and a deformation body flexible top plate (3) through high-pressure extrusion molding of the extruding machine;
the manufacturing method comprises the following steps of (3) installing a pressurizing valve (4) on a flexible top plate (3) of the deformable body, welding a bottom plate of the deformable body on the lower surface of the honeycomb-shaped deformable body (1) in an ultrasonic welding mode, welding side plates (2) of the deformable body on the corresponding left side surface, right side surface, front side surface and rear side surface of the honeycomb-shaped deformable body (1) in an ultrasonic welding mode, and welding the flexible top plate (3) of the deformable body on the upper surface of the deformable honeycomb-shaped body (1) in an ultrasonic welding mode;
the portable sheet flexible jacking device applied to the jacking and deviation rectifying of the building is constructed by adopting the following method, and specifically comprises the following construction steps:
the construction method comprises the following steps that 1, a jacking part of a building needing jacking deviation correction is disconnected, and a working surface is cut;
2, placing the portable sheet flexible jacking device applied to jacking and rectifying the building on a working surface;
construction step 3, connecting a pressure valve (4) of the flexible top plate (3) of the deformation body with a pump station through a pressure pipeline;
construction step 4, starting a pump station, sending modified cement into a jacking pressurization cavity of the honeycomb deformation body through a pressurization pipeline and a pressurization valve (4) by the pump station, wherein the modified cement comprises the following materials in parts by weight, specifically PO52.5 cement: sand: water: thickening agent: water reducing agent: setting accelerator: micro-swelling agent = 32.8%: 55.2%: 11.7%: 0.08%: 0.16%: 0.04%: 0.02 percent;
and 5, after the modified cement is solidified, removing the pressure valve (4) and the pressure pipeline.
2. The portable sheet flexible jacking device applied to building jacking deviation rectification in claim 1, wherein: the coagulant adopted in the preparation step 1 is a dibenzoyl peroxide-tertiary amine system coagulant.
3. The portable sheet flexible jacking device applied to building jacking deviation rectification in claim 1, wherein: the solidification initiator is cyclohexanone peroxide, benzoyl peroxide or cobalt naphthenate.
4. The portable sheet flexible jacking device applied to building jacking deviation rectification in claim 1, wherein: in the preparation step 2, the extrusion pressure of the extrusion molding machine is 2000N per square centimeter, and the extrusion molding temperature is 80-120 ℃.
5. The portable sheet flexible jacking device applied to building jacking deviation rectification in claim 1, wherein: the thickening agent is cellulose ether.
6. The portable sheet flexible jacking device applied to building jacking deviation rectification in claim 1, wherein: the water reducing agent is a melamine water reducing agent.
7. The portable sheet flexible jacking device applied to building jacking deviation rectification in claim 1, wherein: the coagulant used in the construction step 4 is one or a mixture of at least two of calcium chloride, calcium nitrate, calcium aluminate and aluminum sulfate.
8. The portable sheet flexible jacking device applied to building jacking deviation rectification in claim 1, wherein: the micro-expansion agent is an early strength micro-expansion agent.
9. The portable sheet-like flexible jacking device applied to building jacking deviation rectification as claimed in any one of claims 1 to 8, wherein: the upper surface of the flexible top plate (3) of the deformation body is provided with contact bumps which are uniformly distributed and are raised upwards respectively.
10. The portable sheet-like flexible jacking device applied to building jacking deviation rectification as claimed in any one of claims 1 to 8, wherein: the glass fiber adopted in the preparation step 1 is short fiber, the diameter value of the glass fiber is 15-25 micrometers, and the length value of the glass fiber is 8-12 millimeters.
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| CN106088175A (en) * | 2016-06-12 | 2016-11-09 | 岩土科技股份有限公司 | Rectifying of leaned building device and method |
| CN107975250A (en) * | 2017-11-23 | 2018-05-01 | 杭州敦固建筑特种工程有限公司 | A kind of synchronization dystopy jack-up system and method |
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Application publication date: 20210316 |