Mountain concrete foundation construction method

Abstract

The invention discloses a mountain concrete foundation construction method, which relates to the technical field of concrete foundation construction, and comprises the following steps: S1, conveying concrete: when the slope of a mountain is in a set slope range, conveying the concrete through a chute; and S2, concrete pouring is conducted, and the concrete foundation is formed. Aiming at the characteristics that gravel materials in a photovoltaic area are difficult to transport, pouring points are dispersed, and the time for transporting concrete to the pouring points under large gradient is long, the efficiency is low and the safety is poor, the concrete is conveyed in a chute mode; the method comprises the following steps of: determining a ridge line and a 30-45-degree gentle slope region according to topographic surveying and mapping results by virtue of topographic field investigation, avoiding the position of a gully forest region, and designing a chute perpendicular to a contour line in a region range, so as to ensure that concrete flows at a uniform speed and is not segregated; chute branches are arranged according to needed pouring points, branch blocking is carried out according to parts needing pouring, and smooth concrete transportation and pouring under the large slope are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of concrete foundation construction, and in particular to a mountain concrete foundation construction method. Background Art

[0002] According to the natural conditions of mountainous sites, material transportation in mountainous photovoltaic power stations is an important factor affecting the construction period. Specifically, in mountainous projects, mountain photovoltaics are mostly distributed in high and steep areas with large slopes. In some areas, due to the shape of the mountains and terrain characteristics, vehicles cannot directly transport materials to the designated location and need to be transported secondary. According to the on-site survey, the roads in the site area cannot lead to all places in the site, especially uphill and mountain tops. During construction, there is a large amount of secondary material transportation work, which often requires manual handling and is extremely inefficient.

[0003] Therefore, a mountain concrete foundation construction method is provided to solve the above-mentioned technical problems existing in the prior art. Summary of the invention

[0004] The purpose of the present invention is to provide a mountain concrete foundation construction method to solve the problems existing in the above-mentioned prior art, and to transport concrete by means of a chute, so as to achieve the advantages of convenient transportation on steep terrain and high construction efficiency in a small area.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a mountain concrete foundation construction method, comprising the steps of:

[0007] S1, conveying concrete. When the mountain slope is within the set slope range, the concrete is conveyed through the chute;

[0008] S2. Pour concrete to form a concrete foundation.

[0009] Preferably, before step S1, the method further comprises the following steps:

[0010] S101, conducting a field survey of mountain terrain to obtain mountain terrain parameters;

[0011] S102, constructing the chute on site.

[0012] Preferably, in step S101, the mountain terrain parameters include at least the length, elevation, slope and rock surface characteristics of the horizontal section from the mountain to the pile point of the concrete foundation.

[0013] Preferably, in the step S102, a chute branch is provided on the chute according to a preset pouring point position, and the chute branch is intercepted according to the pouring position.

[0014] Preferably, in step S1, the set slope range is 30° to 45°. When the mountain slope is greater than 45°, concrete is transported through a negative pressure chute; in a horizontal section, concrete is transported through a belt conveyor.

[0015] Preferably, in the step S1, it also includes conveying construction materials, and conveying the construction materials via a zipline.

[0016] Preferably, in step S2, before pouring the concrete, ensure that the steel cage is stable and accurately positioned, and that the concrete is vibrated and compacted. After pouring, the concrete is leveled and compacted, and the easily damaged parts are protected.

[0017] Wherein, the concrete adopts self-mixed concrete. Before construction, a test report on the strength of concrete curing test blocks under the same conditions is obtained to determine whether the mix ratio and strength of the concrete meet the design requirements. The single concrete foundation is cast and formed in one go.

[0018] Preferably, in step S2, when the outdoor daily average temperature at the construction site is lower than 5°C for 5 consecutive days or the lowest temperature is lower than -3°C, the concrete construction is treated as winter construction;

[0019] When the outdoor daily average temperature at the construction site is above 5℃ for five consecutive days, winter construction will be terminated.

[0020] Preferably, in step S2, when the depth of water accumulation in the pile hole of the concrete foundation is less than or equal to a first set value, the water in the pile hole is pumped out and concrete is poured in a conventional manner; when the depth of water accumulation in the pile hole is greater than the first set value, concrete is poured using an underwater concrete construction method;

[0021] When pouring concrete using a conventional method, a guide device is used to guide the concrete, and the discharge port of the guide device is less than or greater than a second set value from the concrete surface, and the concrete is continuously poured and vibrated in layers.

[0022] Preferably, in step S2, the concrete foundation is a photovoltaic concrete foundation, and the photovoltaic concrete foundation is distributed parallel to the mountain contour array.

[0023] Compared with the prior art, the present invention has achieved the following technical effects:

[0024] The present invention transports concrete through a chute in a steep slope area to facilitate pouring of a concrete foundation, which can greatly reduce labor input, improve work efficiency, and ensure continuous pouring of large volumes of concrete. Moreover, by transporting concrete through a chute for pouring, the slump of concrete can be lowered, the unit water consumption can be reduced, and concrete shrinkage can be avoided. At the same time, it is also more conducive to the heat dissipation of concrete in summer, and the mold entry temperature and hydration heat can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a flow chart of chute design in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The purpose of the present invention is to provide a mountain concrete foundation construction method to solve the problems existing in the above-mentioned prior art, and to transport concrete by means of a chute, so as to achieve the advantages of convenient transportation on steep terrain and high construction efficiency in a small area.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Embodiment 1

[0031] like Figure 1 As shown, this embodiment provides a mountain concrete foundation construction method, which mainly includes the following steps:

[0032] S1, conveying concrete. When the mountain slope is within the set slope range, the concrete is conveyed through the chute;

[0033] S2. Pour concrete to form a concrete foundation.

[0034] In this embodiment, in areas with large slopes, concrete is transported through a chute to facilitate the pouring of concrete foundations, which can greatly reduce labor input, improve work efficiency, and ensure continuous pouring of large volumes of concrete. Moreover, by transporting concrete through a chute for pouring, the slump of concrete can be lowered, the unit water consumption can be reduced, and concrete shrinkage can be avoided. At the same time, it is also more conducive to the heat dissipation of concrete in summer, reducing the mold entry temperature and hydration heat.

[0035] Further, it needs to be explained that in this embodiment, different concrete foundations can be cast as needed. As a preferred implementation, the concrete foundation in this embodiment is a photovoltaic concrete foundation, and the photovoltaic concrete foundation is distributed parallel to the mountain contour array.

[0036] In this embodiment, the step S1 further includes conveying construction materials, specifically conveying the construction materials by means of a zipline to achieve efficient transportation of the construction materials; wherein the construction materials may be building materials such as steel bars or some construction tools.

[0037] In this embodiment, before step S1, the following steps are further included:

[0038] S101. Conduct on-site survey of mountain terrain to fully understand the length, elevation, slope and rock surface characteristics of the horizontal section from the mountain to the pile point of the concrete foundation;

[0039] S102. According to the mountain contours and the array layout of the photovoltaic concrete foundation, the paths of the zipline and the chute are planned to ensure the height difference of the paths, and the chute and the zipline are set up on site; wherein the chute is made of tinplate and lined with wooden scaffolding boards.

[0040] In this embodiment, in the step S102, a chute branch is provided on the chute according to the preset pouring point position, and the chute branch is intercepted according to the pouring position to ensure smooth concrete transportation and pouring under a large slope.

[0041] In this embodiment, in step S1, the set slope range can be selected according to specific work needs, preferably 30° to 45°. In the set slope range of 30° to 45°, conventional chutes can be used to transport concrete; when the mountain slope is greater than 45°, concrete is transported by a negative pressure chute; and in the horizontal section, concrete is transported by a belt conveyor. This embodiment combines economical and practical transportation methods according to local conditions to achieve the purpose of concrete transportation, and maximizes cost savings while ensuring the quality of concrete transportation; it is particularly suitable for high steep slopes and large drop concrete transportation in high mountains and steep slopes where sites and roads are limited.

[0042] In this embodiment, after field survey of the terrain, the location of gully forest area is avoided, and according to the results of topographic mapping, the ridge line and the 30° to 45° gentle slope area are determined, and the chute is designed perpendicular to the contour lines within the area to ensure that the concrete flows at a uniform speed without segregation; chute branches are set according to the required pouring points, and branches are intercepted according to the required pouring parts to ensure smooth concrete transportation and pouring under large slopes.

[0043] In this embodiment, in step S2, before pouring concrete, it is necessary to ensure that the steel cage is stable and accurately positioned, and the concrete is vibrated and compacted. After pouring, it is necessary to level and compact it in a timely manner, and protect the easily damaged parts; among them, the easily damaged parts refer to the external corners of the concrete foundation and other parts that are easily damaged.

[0044] In this embodiment, the concrete is preferably self-mixed concrete. Before large-scale construction, a test report on the strength of concrete curing test blocks under the same conditions is obtained to determine whether the mix ratio and strength of the concrete meet the design requirements. The single concrete foundation is cast in one go and must not be cast in layers.

[0045] In this embodiment, in step S2, when the outdoor daily average temperature at the construction site is stably below 5°C for 5 consecutive days or the lowest temperature is below -3°C, the concrete construction is handled as winter construction; when the outdoor daily average temperature at the construction site is above 5°C for 5 consecutive days, the winter construction is terminated.

[0046] In this embodiment, in step S2, when the depth of water accumulation in the pile hole of the concrete foundation is less than or equal to a first set value, the water in the pile hole is pumped out and concrete is poured in a conventional manner; when the depth of water accumulation in the pile hole is greater than the first set value, concrete is poured using an underwater concrete construction method; wherein the first set value can be selected as needed, and is preferably 100 mm.

[0047] Furthermore, when pouring concrete by conventional methods, a flow guide device is used to guide the concrete, and the discharge port of the flow guide device is less than or greater than a second set value (preferably 2000 mm) from the concrete surface, and the concrete is continuously poured and vibrated in layers, and the layer height is about 1000 to 1500 mm. The flow guide device can be a conduit or a string tube as needed.

[0048] In summary, this embodiment adopts a chute for concrete transportation in photovoltaic areas, targeting the characteristics of difficult transportation of sand and gravel, scattered pouring points, long transportation time, low efficiency and poor safety from concrete mixing to pouring points under large slopes. After field survey of the terrain, avoid the location of gully forest areas, and determine the ridge line and 30° to 45° gentle slope area based on the 1:2000 topographic survey results, design the chute perpendicular to the contour lines within the area to ensure that the concrete flows at a uniform speed without segregation; and set chute branches according to the required pouring points, and intercept the branches according to the required pouring parts to ensure smooth transportation and pouring of concrete under large slopes. In steep slope areas, the use of chutes for concrete transportation and pouring can greatly reduce transportation time and labor input, and has high work efficiency and safety factors.

[0049] This embodiment is suitable for photovoltaic project construction in high and steep areas with large slopes. Slide ropes and chutes are set in combination with parallel lines of contour, and the terrain difference is used to achieve efficient transportation of concrete and materials in mountainous areas.

[0050] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A mountain concrete foundation construction method, characterized in that: Includes steps: S1, conveying concrete. When the mountain slope is within the set slope range, the concrete is conveyed through the chute; S2. Pour concrete to form a concrete foundation.

2. The mountain concrete foundation construction method according to claim 1 is characterized in that: Before step S1, the method further includes the following steps: S101, conducting a field survey of mountain terrain to obtain mountain terrain parameters; S102, constructing the chute on site.

3. The mountain concrete foundation construction method according to claim 2 is characterized in that: In step S101, the mountain terrain parameters at least include the length, elevation, slope and rock surface characteristics of the horizontal section from the mountain to the pile point of the concrete foundation.

4. The mountain concrete foundation construction method according to claim 2 is characterized in that: In the step S102, chute branches are arranged on the chute according to the preset pouring point positions, and the chute branches are intercepted according to the pouring locations.

5. The mountain concrete foundation construction method according to claim 1, characterized in that: In step S1, the set slope range is 30° to 45°. When the mountain slope is greater than 45°, concrete is transported through a negative pressure chute; in the horizontal section, concrete is transported through a belt conveyor.

6. The mountain concrete foundation construction method according to claim 1, characterized in that: In the step S1, the construction materials are also transported by a zipline.

7. The mountain concrete foundation construction method according to claim 1 is characterized in that: In step S2, before pouring concrete, ensure that the steel cage is stable and accurately positioned, and that the concrete is vibrated and compacted. After pouring, the concrete is leveled and compacted, and the easily damaged parts are protected. Wherein, the concrete adopts self-mixed concrete. Before construction, a test report on the strength of concrete curing test blocks under the same conditions is obtained to determine whether the mix ratio and strength of the concrete meet the design requirements. The single concrete foundation is cast and formed in one go.

8. The mountain concrete foundation construction method according to claim 1 is characterized by: In step S2, when the outdoor daily average temperature at the construction site is lower than 5°C for 5 consecutive days or the lowest temperature is lower than -3°C, the concrete construction is treated as winter construction; When the outdoor daily average temperature at the construction site is above 5℃ for five consecutive days, winter construction will be terminated.

9. The mountain concrete foundation construction method according to claim 1, characterized in that: In step S2, when the depth of water accumulation in the pile hole of the concrete foundation is less than or equal to a first set value, the water in the pile hole is pumped out and concrete is poured in a conventional manner; when the depth of water accumulation in the pile hole is greater than the first set value, concrete is poured using an underwater concrete construction method; When pouring concrete using a conventional method, a guide device is used to guide the concrete, and the discharge port of the guide device is less than or greater than a second set value from the concrete surface, and the concrete is continuously poured and vibrated in layers.

10. The mountain concrete foundation construction method according to claim 1, characterized in that: In step S2, the concrete foundation is a photovoltaic concrete foundation, and the photovoltaic concrete foundation is distributed parallel to the mountain contour array.

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