CN209975581U

CN209975581U - Assembled precast concrete inspection shaft

Info

Publication number: CN209975581U
Application number: CN201920396800.8U
Authority: CN
Inventors: 李明; 陈军民; 钱峰; 李宁; 张永强; 张岩; 李砚辉; 朱春雨; 纪献维; 陈林; 冉召
Original assignee: Beijing Municipal Administration Road And Bridge Ltd Co
Current assignee: Beijing Municipal Administration Road And Bridge Ltd Co; Beijing Municipal Road and Bridge Co Ltd
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-01-21
Anticipated expiration: 2029-03-27

Abstract

The utility model relates to a construction technical field, concretely relates to assembled precast concrete inspection shaft, including a plurality of dry concrete components, the concrete component includes base, well chamber, last well chamber, binding off apron and walling crib from bottom to top in proper order, on the corresponding terminal surface between two arbitrary adjacent concrete components, adopts a plurality of groups lock joint to connect fixedly, be provided with rubber seal between the two adjacent concrete components. The utility model discloses an on the corresponding terminal surface between arbitrary two adjacent concrete member, adopt a plurality of groups lock joint to connect fixedly, the construction only needs to hoist each concrete member scene, utilizes the lock joint locking is fixed, process easy operation, and degree of mechanization is high, can effectively guarantee the construction progress. In addition, a grouting hole is formed in the joint of the lower well chamber and the pipeline, and waterproof cement mortar or cement paste and other waterproof materials can be applied on site through the grouting hole after the pipeline extends into the well chamber, so that the site construction is facilitated, and the construction period is shortened.

Description

Assembled precast concrete inspection shaft

Technical Field

The utility model relates to a construction technical field, concretely relates to assembled precast concrete inspection shaft.

Background

In the construction of urban and rural infrastructures, a plurality of pipeline lines such as power supply, water supply, gas, communication, sewage discharge and the like need to be laid underground, and a large number of concrete inspection wells need to be constructed for facilitating the construction and maintenance of various facilities.

The traditional concrete inspection well is built in an actual construction site or concrete is poured by using a mould after a foundation pit is excavated, so that the construction period is long, the process is complex, the quality is influenced by the technical level of constructors, and the performance is unstable.

Therefore, some prefabricated concrete inspection wells are produced in recent years, but most of the existing prefabricated inspection wells adopt tongue-and-groove type connection between prefabricated modules, after the prefabricated inspection wells are hoisted and combined on a construction site, the connection openings still need to be sealed and fixedly constructed by waterproof mortar base slurry, and some prefabricated inspection wells also need to be provided with moulds again on the construction site to further pour, fix and mold each module, so that the process is complex and the construction progress is slow.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes above-mentioned shortcoming provides an easy operation, stable in quality's assembled precast concrete inspection shaft.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an assembled precast concrete inspection shaft, includes a plurality of dry concrete members, the concrete member includes base, well chamber, binding off apron and walling crib from bottom to top in proper order, on the corresponding terminal surface between two arbitrary adjacent concrete members, adopts a plurality of groups lock joint to connect fixedly, be provided with rubber seal between the two adjacent concrete members.

The number of the lock catch joints between any two adjacent concrete members can be at least three, and the lock catch joints can be correspondingly and evenly distributed on the circumference of the end face of the concrete member.

The snap joints between any two adjacent concrete members may be six groups.

The two rubber sealing rings between the two adjacent concrete members can be respectively positioned on the concentric circumferences inside and outside the circumference of the lock catch joint.

The lock catch joint can comprise a clamping jaw arranged on the end face of the concrete member on one side and a clamping finger arranged on the end face of the concrete member on the other side adjacent to the clamping jaw, a claw hook is arranged at the top end of the clamping jaw, a platform or a hook groove used for clamping the claw hook is arranged at the top end of the clamping finger, and after the two adjacent concrete members are butted, the claw hook at the top end of the clamping jaw hooks the platform or the hook groove at the top end of the clamping finger, so that the clamping jaw and the clamping finger are mutually buckled, locked and fixed.

The locking joint can comprise a clamping hook arranged on the end face of one concrete member and a clamping groove arranged on the end face of the other concrete member adjacent to the clamping hook, and after the two adjacent concrete members are in butt joint, the clamping hook is inserted into the clamping groove, so that the clamping hook is hooked and fixed by the clamping groove.

And a shaft adjusting block with various height specifications for selection can be arranged between the closing-up cover plate and the well ring and used for adjusting the height of the inspection well.

And two ends of the well descending chamber are provided with pipeline interfaces, the top ends of the pipeline interfaces can be provided with grouting holes, and the diameters of the grouting holes are 100mm-200 mm.

And a plurality of reinforcing steel bars are axially arranged in each concrete member, and the locking connectors on each concrete member can be fixed at the tail ends of the reinforcing steel bars.

The utility model discloses an on the corresponding terminal surface between arbitrary two adjacent concrete member, adopt a plurality of groups lock joint to connect fixedly, the construction only needs to hoist each concrete member scene, utilizes the lock joint locking is fixed, process easy operation, and degree of mechanization is high, can effectively guarantee the construction progress. In addition, a grouting hole is formed in the joint of the lower well chamber and the pipeline, and waterproof cement mortar or cement paste and other waterproof materials can be applied on site through the grouting hole after the pipeline extends into the well chamber, so that the site construction is facilitated, and the construction period is shortened.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of an end face of the upper well chamber in the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

fig. 4 is a top view of the lower well chamber of the present invention.

Detailed Description

As shown in fig. 1, do the utility model discloses a preferred embodiment of assembled precast concrete inspection shaft, including if dry concrete component, include base 1, well chamber 2, last well chamber 3, binding off apron 4, pit shaft regulating block 5 and walling crib 6 from bottom to top in proper order, well lid 7 cover in 6 top openings parts of walling crib. The base 1 is mainly used for supporting the bottom of an inspection well, the lower well chamber 2 is mainly used for introducing a main branch pipe, the upper well chamber 3 is mainly used for adjusting the height of the well chamber, the upper part of the closing-in cover plate 4 is provided with a shaft adjusting block 5, in addition, the shaft adjusting block 5 can be prefabricated into various specifications with different heights in advance, and when the standard well chamber is configured and has a height difference, the shaft adjusting block 5 with a proper height is selected to adjust the height of the inspection well. And the corresponding end surfaces between any two adjacent concrete members are fixedly connected by at least three groups of locking connectors, and a rubber sealing ring is arranged between the two adjacent concrete members.

Fig. 2 is a schematic structural diagram illustrating an end surface of any concrete member by taking the upper well chamber 3 as an example, in order to ensure stable and firm plugging, six sets of locking joints 8 may be correspondingly arranged on end surfaces of the upper well chamber 3 and a lower well chamber (not labeled in the figure) adjacent to the upper well chamber 3, and the locking joints 8 are evenly distributed on circumferences of the corresponding end surfaces of the upper well chamber 3 and the lower well chamber. Two rubber sealing rings 9 between the upper well chamber 3 and the lower well chamber are respectively positioned on the concentric circumferences inside and outside the circumference of the lock catch joint 8.

Fig. 3 is a partial enlarged view of a portion a in fig. 1, in this embodiment, six structures are shown as a between any two adjacent concrete members corresponding to six sets of the locking joints, but only one of the structures is shown in fig. 1, and the other structures are omitted. As shown in fig. 3, the latch connector includes a claw 81 disposed on the end surface of the upper well 3 and a finger 82 disposed on the end surface of the lower well 2, the top end of the claw 81 has a claw hook 811, and the top end of the finger 82 has a platform 821 or a hook slot (not shown) for receiving the claw hook, and after the two adjacent concrete members (i.e., the upper well 3 and the lower well 2) are butted, the claw hook 811 at the top end of the claw 81 hooks the platform 821 or the hook slot at the top end of the finger 82, so that the claw 81 and the finger 82 are locked and fixed to each other. The two sealing rings 9 are respectively positioned on the concentric circumferences inside and outside the circumference of the lock catch joint 8. In order to ensure the strength of the concrete members, a plurality of reinforcing steel bars 10 are axially arranged in each concrete member, and each lock catch joint, namely the clamping jaw 81 and the clamping finger 82 are respectively fixed at the tail ends of the reinforcing steel bars 10 in the upper well chamber 3 and the lower well chamber 2, so that the fixing strength after the adjacent concrete members are connected is ensured.

As shown in fig. 4, the top view of the lower well chamber of the present invention, two ends of the lower well chamber 2 are provided with pipe joints 21 for communicating with the main branch pipes, the top end of the pipe joints 21 is provided with grouting holes 22, and the diameter of the grouting holes is 100mm-200mm, preferably 200 mm.

Adopt the utility model discloses an assembled precast concrete inspection shaft, its site operation mainly adopts following work flow: construction preparation → excavation of foundation pit and pit wall support → foundation treatment, cushion layer construction → assembly of well chamber, connecting pipeline → cover plate hoisting → launder construction → fertilizer pit backfilling → well head treatment → water shut-off test (if necessary) → backfilling → manhole cover installation.

According to the structure and the working process of the utility model, the concrete members are prefabricated in a factory, the production is carried out according to the design standard, the well chamber has stable quality, firmness and durability, good impermeability, simple maintenance and good environmental protection, the well chamber is not damaged and corroded, during the construction, the concrete members are directly transported to a construction site, and the foundation pit excavation, the support, the foundation treatment and the cushion layer construction are carried out after the construction preparation is made on the construction site; then hoisting each concrete member of the prefabricated inspection well by adopting a crane, aligning the lock catch joint 8 in the hoisting process, completing the insertion connection and fixation of the lock catch joint 8 by utilizing the self weight of the prefabricated module, and completing the connection by adopting a mode of adding a heavy object or pressure when the self weight is not enough to complete the connection of the lock catch joint 8, so that the construction process is convenient, the field grouting is not needed, the environment is protected, the operation process is simple, the mechanization degree is high, the construction period can be effectively saved, and the construction progress is ensured; and the adjacent concrete members are sealed and waterproof by adopting rubber sealing rings, and the construction quality and the construction efficiency are improved.

After the well descending chamber 2 is hoisted, a pipeline (not marked in the figure) is extended into a pipeline interface 21 of the well descending chamber 2, waterproof mortar is placed in the range of 120 degrees below the pipeline, the pipeline is extruded to enable the waterproof mortar to be tightly connected with the pipeline, and the mortar is preferably overflowed; performing on-site mortar setting through the reserved grouting holes 22, filling the two sides and the upper part of the pipeline with waterproof mortar respectively, inserting and tamping the waterproof mortar until the pipeline is completely full, finally smearing triangular waterproof mortar with the width kept at 5-6cm, and then continuously hoisting the upper well chamber 3 and the closing-up cover plate 4; according to the on-site buried depth and the height of the inspection well, the shaft adjusting block 5 with a proper height specification can be selected and hoisted to adjust the overall height of the inspection well, so that the on-site construction progress can be accelerated, and the construction cost can be saved; and finally, the installation of the well ring 6 and the well cover 7 is completed.

As another preferred embodiment of the present invention, the latch connector 8 can be provided with a hook on the end surface of the concrete member on one side, and a slot is provided on the end surface of another adjacent concrete member, and the shape of the latch connector is similar to the buckle of the battery compartment cover of the remote controller. Thus, the snap fit joint may take a variety of forms, as long as it enables convenient locking and tight mounting and securing between adjacent concrete members.

The assembled precast concrete inspection well provided by the utility model is introduced in detail, and the principle and the implementation mode of the utility model are explained by applying a specific example, and the explanation of the above embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. The utility model provides an assembled precast concrete inspection shaft, includes a plurality of dry concrete members, the concrete member includes base, lower well room, goes up well room, binding off apron and walling crib from bottom to top in proper order, its characterized in that: and a plurality of groups of lock joints are adopted to connect and fix corresponding end faces between any two adjacent concrete members, and a rubber sealing ring is arranged between the two adjacent concrete members.

2. The fabricated precast concrete manhole according to claim 1, wherein: the lock catch joints between any two adjacent concrete members are at least three groups and are evenly distributed on the circumference of the end face of the concrete member correspondingly.

3. The fabricated precast concrete manhole according to claim 2, wherein: the two rubber sealing rings between the two adjacent concrete members are respectively positioned on the concentric circumferences inside and outside the circumference where the lock catch joint is positioned.

4. The fabricated precast concrete manhole according to claim 1, wherein: and pipeline connectors are arranged at two ends of the well descending chamber, grouting holes are arranged at the top ends of the pipeline connectors, and the diameters of the grouting holes are 100-200 mm.

5. The fabricated precast concrete manhole according to claim 2, wherein: the lock catch joints between any two adjacent concrete members are six groups.

6. The fabricated precast concrete manhole according to claim 1, wherein: and a plurality of reinforcing steel bars are axially arranged in each concrete member, and the lock catch joints on each concrete member are fixed at the tail ends of the reinforcing steel bars.

7. The prefabricated concrete manhole of claim 1 ~ 6, wherein the locking joint comprises a claw on one end face of the concrete member and a finger on the other end face of the concrete member adjacent to the claw, the claw has a claw hook at its top end, the finger has a platform or a groove for receiving the claw hook at its top end, and after the two adjacent concrete members are butted, the claw hook at its top end hooks the platform or the groove at its top end of the finger, so that the claw and the finger are locked and fixed with each other.

8. The prefabricated concrete inspection well as claimed in claim 1 ~ 6, wherein the locking connector comprises a hook on one end face of the concrete member and a slot on the other end face of the concrete member adjacent to the hook, and after the two adjacent concrete members are butted, the hook is inserted into the slot to hook the hook and fix the hook.

9. The prefabricated concrete manhole of any one of claims 1 ~ 6, wherein a shaft adjusting block with various height specifications is arranged between the closing-up cover plate and the well ring for adjusting the height of the manhole.