Self-compacting field polymer concrete basement side wall post-cast strip pre-sealing structure

Abstract

The utility model discloses a self-compacting field polymer concrete basement side wall post-cast strip pre-sealing structure, and belongs to the technical field of formwork engineering. The structure comprises a pre-sealing structure, an outer sealing plate, a side wall, continuous steel bars, steel tie bars, an inner formwork and a self-compacting polymer concrete post-cast strip. The adjacent side walls are connected through continuous steel bars. The pre-sealing structure and the outer sealing plate are sequentially arranged on the soil facing faces of the side walls and cover the interval between the adjacent side walls. One end of the tie steel bar is fixed on the pre-sealing structure and the outer sealing plate, and the other end is fixed on the continuous steel bar; the inner formworks are arranged on the soil back faces of the side walls and cover the intervals between the adjacent side walls. And the self-compacting field polymer concrete post-cast strip is cast in a gap between the adjacent side walls. Rapid backfilling can be achieved, and the construction efficiency is improved; and meanwhile, the self-compacting polymer concrete is adopted as a post-cast strip pouring material, so that the construction quality of the post-cast strip is effectively improved, and the impermeability of the post-cast strip is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the template engineering technical field, concretely relates to a kind of self-compacting geopolymer concrete underground chamber side wall post-cast strip pre-sealing structure. BACKGROUND

[0002] Post-cast strip is post-cast groove set to eliminate temperature stress, settlement difference and other adverse effects, and post-cast strip pouring usually needs to wait for 30 days or even longer after curing of concrete on both sides before being carried out, but in underground chamber engineering, to ensure engineering quality, shorten construction period and speed up earthwork backfilling, pre-sealing technology is often used to treat side wall post-cast strip.

[0003] At present, the pre-sealing technology for underground chamber side wall mainly uses concrete slab to seal the soil-facing surface in advance, so as to enable early implementation of earthwork backfilling. However, the gap between adjacent concrete slabs is difficult to handle when directly using pre-made concrete slabs for plugging, the overall performance of the pre-sealing structure is poor, and the underground chamber is buried in soil for a long time, which is easily eroded by underground water, further accelerating the damage to the waterproofness of the pre-sealing structure. UTILITY MODEL CONTENT

[0004] The purpose of the utility model embodiment is to provide a kind of self-compacting geopolymer concrete underground chamber side wall post-cast strip pre-sealing structure, it is convenient to construct, and the overall performance is strong, construction effect is good, so as to can solve at least one technical problem involved in background art.

[0005] To solve the above technical problems, the utility model is implemented as follows:

[0006] The utility model embodiment provides a kind of self-compacting geopolymer concrete underground chamber side wall post-cast strip pre-sealing structure, including pre-sealing structure, outer sealing plate, side wall, continuous reinforcement, tie reinforcement, inner formwork and self-compacting geopolymer concrete post-cast strip;

[0007] The number of the side wall is at least two sides and is arranged in parallel and spaced, and the adjacent side walls are connected by continuous reinforcement;

[0008] The pre-sealing structure and outer sealing plate are sequentially arranged on the soil-facing surface of the side wall and cover the interval between the adjacent side walls;

[0009] One end of the tie reinforcement is fixed to the pre-sealing structure and the outer sealing plate, and the other end is fixed to the continuous reinforcement;

[0010] The inner formwork is arranged on the soil-backing surface of the side wall and covers the interval between the adjacent side walls;

[0011] The self-compacting geopolymer concrete post-cast strip is poured into the interval between the adjacent side walls.

[0012] Optionally, the pre-closed structure comprises an arc-shaped plate, an arc-shaped groove on the concave surface of the arc-shaped plate, and planting soil filled in the arc-shaped groove.

[0013] Optionally, the arc-shaped plate is provided with an outer protrusion at the bottom and an inner protrusion at the top matched with the outer protrusion; a plurality of arc-shaped plates arranged in an up-down manner are fixed by the outer protrusion and the inner protrusion.

[0014] The arc-shaped plate is pre-buried with a pre-buried bolt sleeve for connecting the tie steel bars.

[0015] Optionally, the arc-shaped plate is provided with a bottom plate, and the arc-shaped plate, the bottom plate, and the earth-facing surface of the side wall jointly form the arc-shaped groove.

[0016] Optionally, the outer sealing plate is provided with a grout inlet pipe extending in the vertical direction, and the grout inlet pipe is provided with grout outlet holes facing the interval between the arc-shaped groove and the adjacent side wall.

[0017] Optionally, the tie steel bar comprises a steel bar body and a grouting plate arranged on the steel bar body, and the circumferential surface of the steel bar body is provided with threads, and the outer sealing plate and the grouting plate are both provided with threaded holes matched with the threads of the steel bar body.

[0018] Optionally, the arc-shaped plate is uniformly provided with 4-6 pre-buried bolt sleeves.

[0019] Optionally, the self-compacting geopolymer concrete post-pouring belt is made of self-compacting geopolymer concrete with a compressive strength of 40-60 MPa and is injected through the grout inlet pipe.

[0020] Compared with the prior art, the utility model has the beneficial effects that:

[0021] (1) early closure, rapid backfilling: the pre-closed structure is arranged to pre-close and backfill the post-pouring belt, thereby avoiding the problem of late backfilling time and prolonged construction period due to waiting for post-pouring belt construction.

[0022] (2) higher post-pouring belt density: the self-compacting geopolymer concrete is used as the pouring material of the post-pouring belt, and the grout inlet pipe in the outer sealing plate is used for embedding and pouring, thereby avoiding the use of vibration equipment for compaction in dense steel bars, and effectively improving the construction efficiency and construction quality.

[0023] (3) prefabricated structure, convenient installation: the pre-closed structure, the outer sealing plate and other materials are all prefabricated, and the tie steel bar can be directly welded to the continuous steel bar during installation to realize fixation, thereby facilitating construction and installation.

[0024] (4) The lateral earth pressure is small, and the structure has a greening function: the arc-shaped plate is used as the earth retaining structure of the pre-enclosed structure, the earth pressure of the basement wall caused by the backfilling soil on the side surface is reduced, and the arc-shaped groove is arranged on the top of the pre-enclosed structure, so that the greening planting can be carried out, and the later re-excavation or pouring of the green planting barrel is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0026] Figure 1 A self-compacting geopolymer basement side wall post-cast strip pre-enclosed structure schematic diagram provided by the embodiment of the present application;

[0027] Figure 2 A pre-enclosed structure and outer sealing plate structure installation schematic diagram provided by the embodiment of the present application;

[0028] Figure 3 A pre-enclosed structure and outer sealing plate installation cross-sectional schematic diagram provided by the embodiment of the present application;

[0029] Figure 4 An arc-shaped plate structure schematic diagram provided by the embodiment of the present application;

[0030] Figure 5 An arc-shaped plate and arc-shaped groove assembly structure schematic diagram provided by the embodiment of the present application;

[0031] Figure 6 An outer sealing plate structure schematic diagram provided by the embodiment of the present application;

[0032] Figure 7 A tie steel bar structure schematic diagram provided by the embodiment of the present application;

[0033] 1, pre-enclosed structure; 11, arc-shaped plate; 111, outer protrusion; 112, inner protrusion; 113, pre-buried bolt sleeve; 12, arc-shaped groove; 121, bottom plate; 13, planting soil; 2, outer sealing plate; 21, grouting pipe; 211, grouting hole; 3, side wall; 4, continuous steel bar; 5, tie steel bar; 51, steel bar body; 52, grouting plate; 521, threaded hole; 6, inner formwork; 7, self-compacting geopolymer post-cast strip. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application.

[0035] The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally of a kind, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.

[0036] Please refer to Figures 1 to 5 The utility model discloses an embodiment provides a kind of self-compacting geopolymer concrete underground chamber side wall post-cast strip pre-sealing structure, including pre-sealing structure 1, outer sealing plate 2, side wall 3, continuous reinforcement 4, tie reinforcement 5, inner form 6 and self-compacting geopolymer concrete post-cast strip 7.

[0037] The number of the side wall 3 is at least two and is arranged in parallel and spaced apart. The adjacent side walls 3 are connected by the continuous reinforcement 4.

[0038] The pre-sealing structure 1 and the outer sealing plate 2 are sequentially arranged on the soil-facing surface of the side wall 3 and cover the space between the adjacent side walls 3.

[0039] One end of the tie reinforcement 5 is fixed to the pre-sealing structure 1 and the outer sealing plate 2, and the other end is fixed to the continuous reinforcement 4.

[0040] The inner form 6 is arranged on the soil-backing surface of the side wall 3 and covers the space between the adjacent side walls 3.

[0041] The self-compacting geopolymer concrete post-cast strip 7 is poured into the space between the adjacent side walls 3.

[0042] The pre-sealing structure 1 includes an arc-shaped plate 11, an arc-shaped groove 12 located on the concave surface of the arc-shaped plate 11, and a planting soil 13 filled in the arc-shaped groove 12. The planting soil 13 can be used for planting plants.

[0043] The arc-shaped plate 11 is provided with an outer protrusion 111 at the bottom and an inner protrusion 112 at the top which cooperates with the outer protrusion 111; a plurality of arc-shaped plates 11 arranged one above another are fixed by cooperation of the outer protrusion 111 and the inner protrusion 112.

[0044] It should be further explained that the outer protrusion 111 and the inner protrusion 112 are arranged in a staggered manner in the horizontal direction so as to realize cooperation and assembly.

[0045] The arc-shaped plate 11 is pre-buried with a pre-buried bolt sleeve 113 for connecting the tie steel bar 5.

[0046] The arc-shaped plate 11 is provided with a bottom plate 121 at the bottom, and the arc-shaped plate 11, the bottom plate 121 and the earth-facing surface of the side wall 3 jointly form the arc-shaped groove 12.

[0047] The outer sealing plate 2 is provided with a grouting pipe 21 extending in the vertical direction, and the grouting pipe 21 is provided with a grouting hole 211 facing the interval between the arc-shaped groove 12 and the adjacent side wall 3.

[0048] Further combining Figure 6 and Figure 7 As shown, the tie steel bar 5 comprises a steel bar body 51 and a grouting sealing plate 52 arranged on the steel bar body 51, and the circumferential surface of the steel bar body 51 is provided with a thread, and the outer sealing plate 2 and the grouting sealing plate 52 are both provided with a threaded hole 521 which cooperates with the thread of the steel bar body 51.

[0049] The arc-shaped plate 11 is uniformly provided with 4-6 pre-buried bolt sleeves 113.

[0050] The self-compacting geopolymer concrete post-pouring belt 7 is made of self-compacting geopolymer concrete with a compressive strength of 40-60 MPa by grouting through the grouting pipe 21. During grouting, the self-compacting geopolymer concrete grouting pipe is directly inserted into the grouting pipe 21, and the first grouting ensures that the self-compacting geopolymer concrete fills the height of one outer sealing plate 2, and the grouting pipe is pulled out immediately after grouting, ensuring that the grouting pipe is always kept 40 cm below the liquid level of the self-compacting geopolymer concrete.

[0051] It should be noted that in this document, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0052] Furthermore, it is noted that the scope of the methods and systems of the embodiments of the present application are not limited to the performance of the functions described or illustrated in the order described or illustrated, nor are the embodiments of the present application limited to performing all or only a portion of such actions, or to performing such actions in the order written. Further, the described features can be combined in other examples.

[0053] The embodiments of the present application are described above with reference to the drawings; however, the present application is not limited to the specific embodiments described above, but the specific embodiments described above are merely illustrative, and are not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope of protection of the claims, and all belong to the protection of the present application.

Claims

1. A self-compacting polymer concrete underfloor room side wall post-cast strip pre-enclosed structure, characterized in that, The pre-closed structure (1), the outer sealing plate (2), the side wall (3), the continuous steel bar (4), the tie steel bar (5), the inner formwork (6) and the self-compacting polymer concrete post-poured belt (7) are included. The side wall (3) is arranged in at least two sides and is spaced side by side, and the adjacent side walls (3) are connected by the continuous steel bar (4). The pre-closed structure (1) and the outer sealing plate (2) are arranged on the earth-facing surface of the side wall (3) in sequence and cover the interval between the adjacent side walls (3). One end of the tie steel bar (5) is fixed to the pre-closed structure (1) and the outer sealing plate (2), and the other end is fixed to the continuous steel bar (4). The inner formwork (6) is arranged on the back-soil surface of the side wall (3) and covers the interval between the adjacent side walls (3). The self-compacting polymer concrete post-poured belt (7) is poured into the interval between the adjacent side walls (3).

2. The self-consolidating geoploy mix concrete basement side wall post- poured strip pre-enclosed structure according to claim 1, characterized in that, The pre-closed structure (1) includes an arc-shaped plate (11), an arc-shaped groove (12) on the concave surface of the arc-shaped plate (11), and planting soil (13) filled in the arc-shaped groove (12).

3. The self-consolidating geoploy mix concrete basement side wall post- poured strip pre-enclosed structure according to claim 2, characterized in that, The bottom of the arc-shaped plate (11) is provided with an outer protrusion (111), and the top is provided with an inner protrusion (112) matched with the outer protrusion (111); a plurality of arc-shaped plates (11) arranged in up and down are fixed by cooperating the outer protrusion (111) and the inner protrusion (112). The arc-shaped plate (11) is pre-buried with a pre-buried bolt sleeve (113) for connecting the tie steel bar (5).

4. The self-compacting geopolymer in-situ concrete basement side wall post- poured strip pre-sealing structure according to claim 2 or 3, characterized in that, The bottom of the arc-shaped plate (11) is provided with a bottom plate (121), and the arc-shaped plate (11), the bottom plate (121) and the earth-facing surface of the side wall (3) jointly form the arc-shaped groove (12).

5. The self-consolidating geoploy mix concrete basement side wall post- poured strip pre-enclosed structure according to claim 2, characterized in that, The outer sealing plate (2) is provided with a grout inlet pipe (21) extending in the vertical direction, and the grout inlet pipe (21) is provided with a grout outlet hole (211) facing the interval between the arc-shaped groove (12) and the adjacent side wall (3).

6. The self-consolidating geoploy mix concrete basement side wall post- poured strip pre-enclosed structure according to claim 1, characterized in that, The tie steel bar (5) includes a steel bar body (51) and a grouting plate (52) arranged on the steel bar body (51), and the circumferential surface of the steel bar body (51) is provided with threads, and the outer sealing plate (2) and the grouting plate (52) are both provided with threaded holes (521) matched with the threads of the steel bar body (51).

7. The self-consolidating geoploy mix concrete basement side wall post- poured strip pre-enclosed structure according to claim 3, characterized in that, The arc-shaped plate (11) is uniformly provided with 4-6 pre-buried bolt sleeves (113).

8. The self-consolidating geoploy mix concrete basement side wall post- poured strip pre-enclosed structure according to claim 5, characterized in that, The self-compacting polymer concrete post-poured belt (7) is made of self-compacting polymer concrete with a compressive strength of 40-60 MPa and is injected through the grout inlet pipe (21).

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