CN115182375A - Construction method for dense bearing platform - Google Patents
Construction method for dense bearing platform Download PDFInfo
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- CN115182375A CN115182375A CN202210858177.XA CN202210858177A CN115182375A CN 115182375 A CN115182375 A CN 115182375A CN 202210858177 A CN202210858177 A CN 202210858177A CN 115182375 A CN115182375 A CN 115182375A
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- 238000010276 construction Methods 0.000 title claims abstract description 54
- 239000011449 brick Substances 0.000 claims abstract description 127
- 238000000465 moulding Methods 0.000 claims abstract description 63
- 238000009412 basement excavation Methods 0.000 claims abstract description 8
- 239000002689 soil Substances 0.000 claims description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 3
- 238000009415 formwork Methods 0.000 abstract description 19
- 238000009434 installation Methods 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011469 building brick Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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Abstract
The invention discloses a construction method for a dense bearing platform, which adopts a prefabricated brick form, can be spliced and formed directly on site by bolts, and can directly carry out the next step (such as backfilling and leveling) after the prefabricated brick form member reaches the concrete strength. The prefabricated brick moulding bed is adopted, and the whole is formed after installation, and the strength is high. After mechanical excavation, construction can be carried out immediately, the assembly time is short, backfilling and leveling can be carried out in a short time, the machine does not need to repeatedly enter a finished area, and secondary damage is avoided; the efficiency of cushion cap formwork is improved, the manual work of building and pouring the cushion layer is greatly saved, the construction period is greatly shortened, and the construction period is integrally saved.
Description
Technical Field
The invention particularly relates to a construction method for a dense bearing platform.
Background
The distance between the bearing platforms in the central court area is small (the plane layout of the bearing platforms is shown in figure 1), and the bearing platforms are dense, so that the mechanical soil returning and leveling are difficult, and the influence on the construction progress is large.
In general, a formwork (a brick bed formwork) is required during the construction of a bearing platform. The traditional construction mode is as follows: mechanical equipment is adopted to excavate earthwork, then brick blocks, mortar and the like are adopted to build a brick moulding bed, and as the brick blocks are not integrated with the brick blocks, the mortar needs a certain time to reach a certain strength and the strength is not high. In the traditional construction mode, the brick moulding bed cycle is longer, and the brick moulding bed reaches certain intensity to accumulate after a certain amount, machinery repeated entering backfills, levels, because traditional brick moulding bed intensity is low, and the interval is little again between the brick moulding bed, must lead to large-scale traditional brick moulding bed to be destroyed by the secondary, leads to follow-up construction error to appear, can not guarantee engineering quality.
Therefore, how to construct aiming at the dense bearing platform, the earthwork machine does not repeatedly enter, the secondary damage to the bearing platform is reduced, the efficiency of supporting the formwork of the bearing platform is improved, the construction period is shortened, and the problem to be solved is urgently needed.
Disclosure of Invention
In view of the above situation, the present invention provides a construction method for a dense bearing platform to overcome the defects of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a construction method for a dense bearing platform comprises the following steps:
(1) Adopting a GNSS locator to carry out preliminary excavation position location, excavating bearing platform earthwork, excavating through mechanical equipment, and turning the soil to the periphery of the bearing platform earthwork; firstly, digging a row of bearing platform earthwork, and after digging one row, carrying away a part of soil dug out of each bearing platform earthwork by a transport vehicle, wherein during construction of each bearing platform, the carried-away soil amount is the soil amount of the volume of a brick moulding bed of the bearing platform;
(2) After earthwork of each bearing platform is dug, preliminarily flattening and tamping the bottom position of the bearing platform;
(3) When the next bearing platform earthwork is excavated and/or the next bearing platform earthwork is carried with soil, the prefabricated brick molding bed component is placed into the last excavated bearing platform earthwork, and the prefabricated brick molding bed component is installed and fixed and is spliced and formed by bolts;
(4) Backfilling the earthwork of the bearing platform in the row by adopting mechanical equipment, pushing the residual soil positioned at the periphery of the earthwork of the bearing platform into the periphery of the prefabricated brick moulding bed component and tamping, leveling the earthwork at the periphery of the bearing platform after tamping, and finishing the construction of the earthwork of the bearing platform in the row;
(5) And (5) sequentially constructing according to rows until all the construction is finished, and finally pouring a cushion layer of the bearing platform.
Further, in the step (3), after the prefabricated brick mould member is placed in the earthwork of the last excavated bearing platform, the prefabricated brick mould member is accurately positioned through a GNSS (global navigation satellite system) positioning instrument, so that the left and right positions of each prefabricated brick mould are symmetrical, and the front and rear positions of each prefabricated brick mould are symmetrical; and steel nails are arranged at four corners of the prefabricated brick moulding bed component.
Further, in the step (3), the upper position of the prefabricated brick moulding bed component is ensured to be horizontal through a level ruler and is horizontal to the upper part of the bearing platform earthwork, and the condition is met by beating with a hammer; if the prefabricated brick form elements partially or completely do not touch the bottom surface, a gap occurs, and concrete is filled in the gap.
Further, in the step (3), a control assembly is arranged at the upper part of the prefabricated brick mould component to fixedly control the side surface and the right-angle position of the prefabricated brick mould; the control assembly comprises a control component, a connecting component and a fixing component, and the control component and the fixing component are respectively connected with the connecting component.
Further, the control part comprises two control plates which are perpendicular to each other to form a right-angle clamp, and the right-angle clamp is matched with the right-angle position of the prefabricated brick moulding bed and can be used for controlling the position between two adjacent prefabricated brick moulding bed components.
Further, the connecting part adopts a connecting rod or an elastic telescopic rod with fixed length.
Further, the fixing part adopts a V-shaped fixing piece for fixing on the side wall of the earth.
Further, in the step (3), a supporting structure is arranged on the inner side surface of the prefabricated brick mould component, and the supporting structure is detachably connected with the prefabricated brick mould component.
Further, in step (3), the support structure and the prefabricated brick mould member are fixed together by using the mounting piece and the fastener.
Furthermore, the supporting structure comprises a vertical pillar, a transverse pillar and an oblique pillar, the vertical pillar is connected with the transverse pillar, and the oblique pillar is detachably connected with the vertical pillar and the transverse pillar respectively; the vertical pillar and the transverse pillar are respectively connected with the rotating shaft, and the transverse pillar and the vertical pillar can rotate around the rotating shaft. .
The invention has the beneficial effects that:
(1) In the invention, the mechanical equipment is used for excavating soil, a row of prefabricated brick moulding bed components are firstly excavated, and then the soil is transported after the row of prefabricated brick moulding bed components is excavated, and the prefabricated brick moulding bed components are placed in the earthwork of the bearing platform excavated at the same time of excavating and transporting the soil, so that the working efficiency can be greatly improved, and the construction period can be shortened.
(2) In the invention, the prefabricated brick mould is adopted, the bolt splicing forming can be directly adopted on site, the prefabricated brick mould component reaches the concrete strength, and the next step of work (such as backfilling and leveling) can be directly carried out after the installation is finished. The prefabricated brick molding bed is adopted, and the prefabricated brick molding bed is integrated after being installed and has high strength. After mechanical excavation, construction can be carried out immediately, the assembly time is short, backfilling and leveling can be carried out after assembly, machines do not need to enter a finished area repeatedly, and secondary damage is avoided; the efficiency of cushion cap formwork is improved, the manual work of building and pouring the cushion layer is greatly saved, the construction period is greatly shortened, and the construction period is integrally saved.
(3) The steel nails are arranged at four corners of the prefabricated brick molding bed and vertically downwards and are buried into the ground; before filling soil, a control assembly, a supporting structure and the like are adopted, so that the prefabricated brick moulding bed structure can be well stabilized, the construction accuracy is ensured, the construction error is small, and the engineering quality is improved; the prefabricated brick mould shifting in the construction process is avoided.
Drawings
Fig. 1 is a plan view of a platform according to example 1.
FIG. 2 is a drawing showing the fabricated deepening of the bearing platform in example 1 (in the drawing, the numerical values are in mm).
FIG. 3 is a view of the assembly of the green tire mold in the field in example 1.
Fig. 4 is a schematic structural diagram of the control unit in embodiment 1.
Fig. 5 is a schematic view of the structure of the connecting member in embodiment 1.
Fig. 6 is a schematic view of the support structure in embodiment 2.
Fig. 7 is a schematic structural view of the mounting member in embodiment 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly and implicitly understood by one of ordinary skill in the art that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The use of the terms "including," "comprising," "having," and any variations thereof herein, is meant to cover a non-exclusive inclusion; reference to "connected," "coupled," and the like in this application is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Reference herein to "a plurality" means greater than or equal to two. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
Example 1
In this embodiment, the distance between the bearing platforms in the central court area is small (the arrangement drawing of the bearing platform is shown in fig. 1), and the bearing platforms are dense. The size of the brick forming die of the bearing platform is 1400mm × 450mm, the distance between adjacent bearing platforms is 2600mm, the distance is small, the mechanical entering soil returning and leveling are difficult, and the influence on the construction progress is large.
In the invention, the bearing platform is deepened in drawing as shown in fig. 2, the black frame is a steel reinforcement framework, and a part with internal thread threads with the diameter of 14mm is pre-embedded and can be used for being connected with other parts, for example, a part with external threads, so that the bearing platform is firmer, the shearing resistance and the tensile strength are improved, the earthquake resistance is improved, and the structural safety is ensured.
The invention provides a construction method for a dense bearing platform, wherein the dense bearing platform is the bearing platform, and the construction method comprises the following steps:
(1) Adopting a GNSS positioning instrument to carry out preliminary excavation position positioning, excavating bearing platform earthwork, excavating through mechanical equipment, and turning the soil to the periphery of the bearing platform earthwork; firstly, digging a row of bearing platform earthwork, and carrying away a part of soil dug out from the earthwork of each bearing platform by a transport vehicle after the digging of the row, wherein the carried-away soil quantity is the soil quantity of the volume of a bearing platform brick moulding bed during the construction of each bearing platform;
(2) After each bearing platform is excavated, preliminarily flattening and tamping the bottom position of the bearing platform;
(3) When the next bearing platform earthwork is excavated and/or the next bearing platform earthwork is carried with soil, the prefabricated brick molding bed component is placed into the last excavated bearing platform earthwork, and the prefabricated brick molding bed component is installed and fixed and is spliced and formed by bolts;
(4) Backfilling the earthwork of the bearing platform in the row by adopting mechanical equipment, pushing the residual soil positioned at the periphery of the earthwork of the bearing platform into the periphery of the prefabricated brick moulding bed component and tamping, leveling the earthwork at the periphery of the bearing platform after tamping, and finishing the construction of the earthwork of the bearing platform in the row;
(5) And (5) sequentially constructing according to rows until all the construction is finished, and finally pouring a cushion layer of the bearing platform.
Specifically, in step (1), a GNSS positioning apparatus is used for positioning a primary excavation position, bearing platform earthwork is excavated, mechanical equipment is used for excavating earth, a row is firstly excavated, the earth is turned to the periphery of the bearing platform earthwork, and 2000mm 450mm bearing platform earthwork is excavated (in a traditional construction mode, 2500mm 250mm 450mm bearing platform earthwork needs to be excavated, bricks, mortar and the like are used for building brick formworks), after one row of excavation is finished, a part of earth excavated from each bearing platform earthwork is carried away by a transport vehicle, during each bearing platform construction, the carried-away earth amount is the volume of 1400mm 450mm of the bearing platform brick formworks (the earth amount can be calculated according to a container with a certain specification, such as filling a plurality of trolleys), the prefabricated brick formworks are arranged into the last excavated bearing platform earthwork while excavating earth and carrying earth, the prefabricated brick formworks can be greatly reduced until the peripheral distance of the prefabricated formworks of the prefabricated brick formworks is reduced, and accordingly, the prefabricated brick formworks can be completely pushed into the periphery of the prefabricated formworks, and the left-side-by the prefabricated formworks of the prefabricated brick formworks can be reduced, and the prefabricated formworks can be conveniently pushed into the peripheral PC formworks after the construction work of the prefabricated brick formworks, and the construction work of the construction steps can be reduced. The distance between the bearing platforms is 2600mm, and 600mm is 2 mm, namely the distance between the bearing platforms and the earthwork is 1400mm.
Specifically, step (2): after each bearing platform earthwork is excavated, firstly, primarily flattening and tamping the bottom position of the bearing platform by using an excavator, and flattening the bearing platform again when the prefabricated brick moulding bed component is installed manually;
specifically, prefabricated brick mould components are placed in the step (3), and are directly spliced and formed by bolts; after the prefabricated brick mould components are placed, the prefabricated brick mould components are accurately positioned through a GNSS (global navigation satellite system) positioning instrument, so that the left and right positions of each prefabricated brick mould are symmetrical, and the front and back positions of each prefabricated brick mould are symmetrical; as shown in fig. 3, the steel nails 111 are provided at four corners of the prefabricated brick form member, the steel nails 111 are vertically downward and buried in the ground, and the position of the prefabricated brick form member is not moved after the steel nails are buried in the ground in general. Because the excavator and the manual earth filling have errors and can have the phenomena of slopes and the like, after the prefabricated brick moulding bed component is placed in, the position above the prefabricated brick moulding bed component is ensured to be horizontal through a leveling rod and is horizontal to the upper side of the bearing platform earthwork, wherein the position above the prefabricated brick moulding bed component is higher than the horizontal height of the bearing platform earthwork, the height difference is within 30mm, the prefabricated brick moulding bed component can be beaten by a hammer to meet the conditions, meanwhile, the phenomenon that the prefabricated brick moulding bed component partially or completely does not touch the ground and a gap occurs can occur, and concrete can be filled in the gap.
In some embodiments, as shown in fig. 3, the prefabricated brick molding of each platform comprises four prefabricated brick molding members 1, and the four prefabricated brick molding members 1 are spliced to form a prefabricated brick molding structure. Specifically, threaded holes are formed in the end portions of two adjacent prefabricated brick mould members 1, and two long screws with the diameter of 14mm can be used for connecting the two adjacent prefabricated brick mould members 1.
In the traditional construction mode, 2500mm × 450mm-sized bearing platform earthwork needs to be dug, brick forming moulds are built by adopting bricks, mortar and the like, and the prefabricated brick forming moulds are adopted, so that only 2000mm × 450mm-sized bearing platform earthwork needs to be dug. The invention has smaller construction surface and reduces the workload of excavating earthwork, subsequently backfilling soil and the like.
In some embodiments, during the operation of mechanical earth backfill, the additional concrete under the prefabricated brick mould component may not be completely solidified, and during the operation of mechanical earth backfill, some positions are filled with earth backfill firstly, other positions are filled with earth backfill later, the earth can extrude the prefabricated brick mould to generate force on the prefabricated brick mould, so that the prefabricated brick mould component is deviated to the side which is not filled with earth, the size of the prefabricated brick mould component is 1400mm + 450mm, and the control component 2 is added to perform fixed control on the position of the prefabricated brick mould on the basis of four steel nails because the prefabricated brick mould component is large in size. As shown in fig. 3-5, the control assembly 2 includes a control part 2-1, a connecting part 2-2 and a fixing part 2-3, and the control part 2-1 and the fixing part 2-3 are respectively connected with the connecting part 2-2. As shown in fig. 4, the control unit 2-1 comprises two control plates, which are perpendicular to each other to form a right-angle clip, which matches the right-angle position of the prefabricated brick moulding bed and can be used to control the position between two adjacent prefabricated brick moulding bed components. In some embodiments, as shown in fig. 4, two control boards are connected and the ends of the two control boards are connected with one end of the connection member 2-2. The connecting member 2-2 may be a connecting rod having a fixed length or an elastic telescopic rod, and in some embodiments, as shown in fig. 4, the connecting member 2-2 is an elastic telescopic rod capable of adaptively adjusting a distance. The elastic telescopic rod comprises a loop bar 2-22 and a movable piece 2-21, and the movable piece can move in the loop bar; the loop bar 2-22 is internally provided with a channel and a spring 2-23, the moving piece 2-21 compresses the spring 2-23 when moving into the loop bar, and the spring 2-23 exerts reaction force on the moving piece, so that the fixing piece 2-3 can be tightly fixed on the side wall of the earth. In some embodiments, the fixing parts 2-3 are V-shaped fixing parts for fixing on the side wall of the earth. Specifically, when the prefabricated brick molding bed is used, two control panels which are perpendicular to each other are attached to the upper parts of two perpendicular side faces of a prefabricated brick molding bed, and the V-shaped fixing piece is inserted into the earthwork side wall for fixing. The control assembly can be used at four corners of the prefabricated brick moulding bed, and in the soil backfilling process, the control assembly 2 can control four side surfaces and four right-angle positions of the prefabricated brick moulding bed, so that the prefabricated brick moulding bed is stable in structure and cannot be displaced.
Specifically, in the step (6), a cushion layer of the bearing platform is pumped and poured, wherein the cushion layer is made of concrete.
The prefabricated brick moulding bed is adopted, and the prefabricated brick moulding bed is integrally formed after being installed and has high strength. After mechanical excavation, construction can be carried out immediately, the assembly time is short, backfilling and leveling can be carried out in a short time, the machine does not need to repeatedly enter a finished area, and secondary damage is avoided; the efficiency of cushion cap formwork is improved, the manual work of building and pouring the cushion layer is greatly saved, the construction period is greatly shortened, and the construction period is integrally saved.
Example 2
In the operation of mechanical backfilling, soil is mainly backfilled to the periphery of the prefabricated brick matrix and tamped, relatively speaking, the soil amount in the prefabricated brick matrix is small, and the soil on the periphery of the prefabricated brick matrix can extrude the prefabricated brick matrix inwards to generate force action on the prefabricated brick matrix, so that the prefabricated brick matrix component deflects to one side which is not filled with the soil; in this embodiment, as shown in fig. 3, before filling, the supporting structure 3 is disposed on the inner side of the prefabricated brick form member 1, and the supporting structure 3 is detachably connected to the prefabricated brick form member 1, so that the supporting structure 3 is convenient to mount and dismount, and the supporting structure 3 can be moved to another place to be reused.
In some embodiments, as shown in fig. 6, the supporting structure 3 includes a vertical pillar 4, a horizontal pillar 5 and an oblique pillar 6, the vertical pillar 4 is connected with the horizontal pillar 5, and the oblique pillar 6 is detachably connected with the vertical pillar 4 and the horizontal pillar 5, so that the installation and the disassembly of the oblique pillar 6 are convenient, the supporting structure can be erected or folded quickly, and the construction time is saved. In the concrete implementation, the bottom of the vertical strut 4 is buried in the soil, the bottom of the oblique strut 6 is buried in the soil, and the transverse strut 5 is also buried in the soil. The oblique strut 6 is connected with the transverse strut 5 and the vertical strut 4 respectively to form a triangle, and the oblique strut 6 can stabilize the whole supporting structure 3, so that the vertical strut 4 is in a vertical state, supports the side surface of the prefabricated brick moulding bed component, and makes the side surface of the brick moulding bed component vertical and not inclined.
In some embodiments, the support structure 3 further comprises a mounting for fixing the vertical post 6, said mounting comprising a first coupling section 7 and a second coupling section 8, as shown in fig. 7, the first coupling section 7 being connected to the second coupling section 8, the first coupling section 7 being intended to couple with the vertical post 4, fixing the position of the vertical post 4 from displacement thereof. The second combining section 8 is used for combining with the prefabricated brick moulding bed component 1, a mounting hole 9 is arranged on the second combining section 8, and a threaded hole is arranged at the corresponding position on the side surface of the prefabricated brick moulding bed component. The vertical strut 4 can be fixed on the inner side arm of the prefabricated brick moulding bed component 1 by adopting the mounting part and the fastener (such as a screw or a bolt) shown in fig. 7, the side wall of the prefabricated brick moulding bed component 1 can be supported, and the prefabricated brick moulding bed component is prevented from being stressed unevenly to cause displacement. When supporting structure 3 needs to be dismantled, only the mounting piece needs to be dismantled, alright make supporting structure 3 and prefabricated brick mould membrane component separate, after dismantling, supporting structure 3 can be moved to other places, by reuse.
In some embodiments, as shown in fig. 6, the lower end of the vertical pillar 4 is further connected with at least one roller 10, so that the supporting structure 3 can be moved conveniently, the whole supporting structure 3 can be pushed away, and the supporting structure can be moved to other positions, which is more convenient and labor-saving. In some embodiments, the roller is a universal wheel, and in some embodiments, a limiting structure is connected to the universal wheel and can be used for limiting the movement of the universal wheel, and the limiting structure may be a limiting structure commonly used in the prior art.
In some embodiments, the vertical post 4 and the horizontal post 5 are respectively connected with a rotating shaft (similar to a hinge type connection), the horizontal post 5 and the vertical post 4 can rotate around the rotating shaft, and when the diagonal post 6 is removed, the vertical post 4 and the horizontal post 5 can be combined together without occupying space.
In some embodiments, the vertical pillars 4 and the horizontal pillars 5 are provided with a plurality of mounting portions 11, which facilitates adjusting the inclination degree and the mounting position of the oblique pillars 6, so that the supporting member can meet various supporting requirements.
In the invention, the prefabricated brick moulding bed is adopted, the bolt splicing forming can be directly adopted on site, the prefabricated brick moulding bed component 1 reaches the concrete strength, after the installation is finished, the corresponding supporting structure 3 is installed, and then the next step of work (such as backfilling and leveling) can be directly carried out.
Other embodiments in this example may be the same as or similar to example 1.
It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
Claims (10)
1. A construction method for a dense bearing platform is characterized by comprising the following steps:
(1) Adopting a GNSS locator to carry out preliminary excavation position location, excavating bearing platform earthwork, excavating through mechanical equipment, and turning the soil to the periphery of the bearing platform earthwork; firstly, digging a row of bearing platform earthwork, and after digging one row, carrying away a part of soil dug out of each bearing platform earthwork by a transport vehicle, wherein during construction of each bearing platform, the carried-away soil amount is the soil amount of the volume of a brick moulding bed of the bearing platform;
(2) After earthwork of each bearing platform is dug, preliminarily flattening and tamping the bottom position of the bearing platform;
(3) When the next bearing platform earthwork is excavated and/or the next bearing platform earthwork is carried with soil, the prefabricated brick molding bed component is placed into the last excavated bearing platform earthwork, and the prefabricated brick molding bed component is installed and fixed and is spliced and formed by bolts;
(4) Backfilling the earthwork of the bearing platform in the row by adopting mechanical equipment, pushing the residual soil positioned at the periphery of the earthwork of the bearing platform into the periphery of the prefabricated brick moulding bed component and tamping, leveling the earthwork at the periphery of the bearing platform after tamping, and finishing the construction of the earthwork of the bearing platform in the row;
(5) And (5) sequentially constructing according to rows until all the construction is finished, and finally pouring a cushion layer of the bearing platform.
2. The construction method for the dense bearing platform as claimed in claim 1, wherein in the step (3), after the prefabricated brick form member is placed in the earth of the last excavated bearing platform, the prefabricated brick form member is accurately positioned by a GNSS positioning instrument, so that the left and right positions of each prefabricated brick form member are symmetrical, and the front and rear positions of each prefabricated brick form member are symmetrical; and steel nails are arranged at four corners of the prefabricated brick mould component.
3. The construction method for the dense cushion cap as claimed in claim 1, wherein in the step (3), the upper position of the prefabricated brick moulding bed component is ensured to be horizontal through a level ruler and is horizontal with the upper position of the earthwork of the cushion cap, and the condition is met by hammering; if the prefabricated brick mould component is partially or completely not contacted with the bottom surface, a gap phenomenon occurs, and concrete is filled in the gap.
4. The construction method for the dense cap as claimed in claim 1, wherein in the step (3), a control assembly is provided at an upper portion of the prefabricated brick molding member to fixedly control the lateral and right-angle positions of the prefabricated brick molding; the control assembly comprises a control component, a connecting component and a fixing component, and the control component and the fixing component are respectively connected with the connecting component.
5. The construction method for the dense bearing platform as claimed in claim 4, wherein the control component comprises two control plates which are perpendicular to each other to form a right angle clamp, and the right angle clamp matches with the right angle position of the prefabricated brick moulding bed and can be used for controlling the position between two adjacent prefabricated brick moulding bed components.
6. The construction method for the dense bearing platform as claimed in claim 4, wherein the connecting member is a connecting rod having a fixed length or an elastic expansion rod.
7. The construction method for the dense bearing platform as claimed in claim 4, wherein the fixing part is a V-shaped fixing part for fixing on the side wall of the earth.
8. A construction method for dense bearing platforms as claimed in claim 1, wherein in step (3), a support structure is provided on the inner side of the prefabricated brick form element, and the support structure is detachably connected with the prefabricated brick form element.
9. A method as claimed in claim 8, wherein in step (3) the support structure is secured to the prefabricated form elements by means of mounting and fastening means.
10. The construction method for the dense bearing platform according to claim 8, wherein the supporting structure comprises a vertical pillar, a horizontal pillar and an oblique pillar, the vertical pillar is connected with the horizontal pillar, and the oblique pillar is detachably connected with the vertical pillar and the horizontal pillar respectively; the vertical strut and the horizontal strut are respectively connected with the rotating shaft, and both the horizontal strut and the vertical strut can rotate around the rotating shaft.
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| CN202210858177.XA CN115182375A (en) | 2022-07-21 | 2022-07-21 | Construction method for dense bearing platform |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20221014 |