Prefabricated plugboard bottom die cast-in-place abutment joint device

Abstract

The utility model provides a prefabricated plugboard bottom die cast-in-situ abutment joint device, and relates to the technical field of offshore gravity type wharf upper abutment joint construction, in particular to the prefabricated plugboard bottom die cast-in-situ abutment joint device. Comprising a caisson body, grooves are reserved in the positions of a top partition wall and side walls of the caisson body, and reinforcing steel bars are embedded in the periphery of an outer wall of the caisson body; an insertion plate is arranged in the groove; an abutment is arranged on the inserting plate, and the two ends of the abutment are arranged on the reinforcing steel bars. Connecting steel bars are reserved on the two sides of the abutment, two adjacent piers are subjected to cast-in-place construction, and the method has the positive effects that the construction difficulty is reduced, the safety is improved, meanwhile, the influence of tide water is avoided, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nearshore gravity type wharf upper pier joint construction technical field especially relates to a prefabricated insert plate bottom die cast in situ pier joint device. BACKGROUND

[0002] In recent years, the gravity type general berth wharf structure gradually changes from the traditional single-row alongshore type caisson structure to the double-row independent caisson pier type wharf, and the wharf structure changes to the integral assembly type structure. The multi-row caisson pier type wharf structure has the functions of water permeation and ecological environment protection, and the natural landscape of the shoreline is maximally maintained while the wharf operation area is ensured. The double-row caisson pier type wharf structure is generally the alongshore type structure with wing plates at the rear caisson and the independent pier type structure at the front caisson, and the rear caisson generally has a wave dissipation hole reserved for ensuring the structural stability. The prefabricated pier is installed on the upper part of the caisson, and the piers are integrally formed through the cast-in-situ joint and the cast-in-situ connecting hole. Influenced by the caisson structure, the cast-in-situ joint of the upper pier of the rear caisson needs to be supported by a bottom formwork. The traditional construction method generally adopts the suspended formwork method for construction, which uses the double-row caisson structure, the rear caisson has a wave dissipation hole, and the joint is cast in situ after the upper installation of the pier block. Because the caisson cells cannot be backfilled to the top of the caisson, the cast-in-situ joint needs to be supported by a bottom formwork, the traditional suspended formwork process has a high construction difficulty and safety risk coefficient, is seriously affected by the tidal water, and has a low construction efficiency. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a prefabricated insert plate bottom die cast in situ pier joint device to reduce the construction difficulty, improve the safety, avoid the influence of the tidal water, and improve the construction efficiency.

[0004] The prefabricated insert plate bottom die cast in situ pier joint device provided by the utility model has the following beneficial effects:

[0005] Further, the insert plate is provided with a hanging nose for insert plate installation.

[0006] The prefabricated insert plate bottom die cast in situ pier joint device provided by the utility model has the following beneficial effects:

[0007] 1. This utility model adopts a plate-type bottom formwork for pier joints. Through structural design, the bottom structure of the caisson body is optimized and a groove is reserved. At the same time, a long strip of precast concrete is used as the bottom formwork for cast-in-place construction. By using the plate as the bottom formwork for cast-in-place construction, the side formwork is installed and then the cast-in-place construction is carried out. This avoids the need for formwork construction after the pier is installed, avoids personnel working in confined spaces, reduces construction difficulty, and improves safety.

[0008] 2. This utility model uses precast insert plate bottom formwork for cast-in-place piers. The insert plates are installed using the low tide gap. After the piers are installed, there is no need to erect the bottom formwork while it is still damp, thus avoiding the impact of moisture and greatly improving construction efficiency.

[0009] Therefore, this utility model adopts a plate-type bottom formwork for pier joints, and after the side formwork is installed, the in-situ casting construction is carried out. This has the positive effects of reducing construction difficulty, improving safety, avoiding the impact of moisture, and improving construction efficiency. Attached Figure Description

[0010] The accompanying drawings disclose specific embodiments of this utility model, wherein,

[0011] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0012] Fig. 2 This is a structural schematic diagram of the top of the caisson body and the pier of this utility model;

[0013] Fig. 3 This is a side view of the structure of the caisson body of this utility model;

[0014] Reference numerals: 1. Caisson body; 11. Groove; 12. Reinforcing steel bar; 13. Insert plate; 14. Lifting nose; 2. Pier; 21. Connecting steel bar. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Example 1:

[0016] like Figs. 1-3 As shown, the precast insert plate bottom formwork cast-in-place pier joint device provided by this utility model includes a caisson body 1. Grooves 11 are pre-reserved at the top partition wall and side walls of the caisson body 1. Reinforcing steel bars 12 are pre-embedded around the outer walls of the caisson body 1. Insert plates 13 are installed in the grooves 11. Piers 2 are installed on the insert plates 13, and both ends of the piers 2 are set on the reinforcing steel bars 12. Connecting steel bars 21 are pre-reserved on both sides of the piers 2, and two adjacent piers 2 are connected by the connecting steel bars 21. Lifting lugs 14 are pre-embedded on the insert plates 13 for insert plate installation. Example 2:

[0017] The prefabricated plug-in plate bottom die cast-in-place pier joint device provided by the utility model has the advantages of reducing construction difficulty, improving safety, avoiding the influence of damp water, and improving construction efficiency.

[0018] Step 1, recess 11 reserved at the top of the caisson body 1: before the top layer of the caisson body 1 is poured, recesses 11 are reserved at the top of the caisson body 1 at the positions of the partition wall and the side wall according to the size of the plug-in plate 13;

[0019] Step 2, prefabrication of the plug-in plate 13: the plug-in plate 13 is prefabricated by using a shaped steel formwork, and single-layer reinforcing steel bars 12 are arranged; the steel formwork is installed to pour the concrete;

[0020] Step 3, installation of the plug-in plate 13: after the caisson body 1 is installed, sand is filled in the compartment and the compartment is sealed, and then the plug-in plate 13 is installed through the lifting nose 14;

[0021] Step 4, installation of the pier 2: the pier 2 is installed by a crane ship;

[0022] Step 5, welding of the reinforcing steel bars: after the installation of the pier 2 is completed, the connecting reinforcing steel bars 21 reserved between the two piers 2 are welded;

[0023] Step 6, installation of the side formwork: after the welding of the connecting reinforcing steel bars 21 is completed, the side formwork is erected;

[0024] Step 7, removal of the side formwork: after the side formwork is erected, the concrete is poured, and after the top layer is leveled, the side formwork is removed, and the cast-in-place pier joint construction is completed.

[0025] The plug-in plate type pier joint bottom formwork is adopted, cast-in-place construction is performed after the side formwork is installed, construction difficulty is reduced, safety is improved, the influence of damp water is avoided, and construction efficiency is improved. Embodiment 3:

[0026] The prefabricated plug-in plate bottom die cast-in-place pier joint device provided by the utility model has the advantages of reducing construction difficulty, improving safety, avoiding the influence of damp water, and improving construction efficiency.

[0027] Step 1, recess 11 reserved at the top of the caisson body 1: before the top layer of the caisson body 1 is poured, recesses 11 are reserved at the top of the caisson body 1 at the positions of the partition wall and the side wall according to the size of the plug-in plate 13;

[0028] Step 2, the precast of the plug-in plate 13: the plug-in plate 13 is precast by using a shaped steel formwork, and the size of a single plug-in plate 13 is 4.96m*0.65m*0.15m; and according to the stress condition, a single layer of reinforcing steel bars 12 are arranged, the reinforcing steel bars 12 have a diameter of 12mm, and a total of 3 reinforcing steel bars 12 and 25 longitudinal reinforcing steel bars with a diameter of 10mm are arranged; the reinforcing steel bars are cut and bound according to the size, and then the steel formwork is installed to pour the concrete; the embedded lifting lug 14 is used for the installation of the plug-in plate;

[0029] Step 3, the installation of the plug-in plate 13: after the caisson body 1 is installed, the compartment is filled with sand and the compartment is sealed, and then the plug-in plate 13 is installed; the plug-in plate 13 is installed by land hoisting, and the plug-in plate 13 is transported from the precast site to the construction site by using a truck and a tray car, and then the plug-in plate 13 is installed by using a track on site through the lifting lug 14; one person is responsible for command, and two people are responsible for auxiliary installation during installation; a total of 16 plug-in plates 13 are installed on one caisson body 1, and the installation is completed at one time;

[0030] Step 4, the installation of the pier 2: after the installation of the plug-in plate 13 is completed, the pier 2 is installed by using a 500-ton crane ship; the crane ship is positioned on the beam plate precast site to hoist the beam plate to the ship; after the completion, the crane ship is self-propelled to the installation position, and the crane ship cooperates with a self-propelled deck barge to install the beam plate;

[0031] Step 5, the welding of the reinforcing steel bars: after the installation of the pier 2 is completed, the connecting reinforcing steel bars 21 between the two piers 2 are welded;

[0032] Step 6, the installation of the side formwork: after the welding of the connecting reinforcing steel bars 21 is completed, the side formwork is erected; the side formwork is made of shaped steel formwork, and a round table is reserved during the precast of the pier 2; the side formwork is fixed by using the round table bolts; the side formwork at the chamfered position of the pier 2 can be adjusted and is fixed by using a stay.

[0033] Step 7, the removal of the side formwork: after the erection of the side formwork is completed, the size and the reinforcing degree of the side formwork are checked; after it is confirmed that there is no error, the concrete is poured; the pouring is performed by using a pump truck, and the pouring process is divided into layers; the side formwork is removed after the top layer is leveled and smoothed, and the cast-in-place pier joint construction is completed.

[0034] The utility model discloses a plug-in plate type pier joint bottom formwork, through structure design, optimization caisson body bottom structure form, reserve recess, precast concrete structure strip plug-in plate simultaneously, as cast-in-place bottom formwork, through plug-in plate as cast-in-place bottom formwork, install side form after present cast-in-place construction, avoided hoisting formwork construction after installing pier, avoided personnel operation in narrow space, reduced construction difficulty, improved security. Meanwhile, the utility model discloses a precast plug-in plate bottom form cast-in-place pier, and the plug-in plate is installed by using low tide interval, and the pier is installed without needing to erect bottom formwork during high tide, avoids the influence of wet water, greatly improves construction efficiency.

Claims

1. A prefabricated plug-in plate bottom mold cast-in-place pier joint device, comprising a caisson body (1), characterized in that, The top partition wall and side wall of the caisson body (1) are provided with grooves (11), and the outer wall of the caisson body (1) is provided with embedded reinforcing steel bars (12); the grooves (11) are provided with plug-in plates (13); the plug-in plates (13) are provided with piers (2), and the two ends of the piers (2) are arranged on the reinforcing steel bars (12); the two sides of the piers (2) are provided with connecting steel bars (21), and two adjacent piers (2) are connected through the connecting steel bars (21).

2. The precast panel formwork cast-in-situ pier joint device according to claim 1, wherein, The plug-in plates (13) are provided with embedded hanging noses (14) for plug-in plate installation.

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