CN-121611238-B - Combined ALC window opening outer wall structure and construction method

CN121611238BCN 121611238 BCN121611238 BCN 121611238BCN-121611238-B

Abstract

The invention belongs to the technical field of assembled wall construction, in particular to a combined ALC window opening outer wall structure and a construction method, comprising a plurality of groups of adjustable connecting components, a plurality of limiting blocking pieces and at least one ALC wallboard, wherein the pretreatment works such as bar planting, flat steel welding and the like of the ALC wallboard are finished on the ground in advance, so that the content and time of high-altitude operation are reduced to the greatest extent, and simultaneously, the cooperative promotion of construction safety, installation quality and operation efficiency is successfully realized through systematic innovation.

Inventors

Qiu Dongshuai
LIU SHUANGFEI
LIU TINGHUI
ZHANG DAJUN
ZHANG SONGTAO
ZHANG QUANXI
ZHAO SHUGUANG
SHEN YUAN

Assignees

陕西安建投资建设有限公司
安徽建工水利开发投资集团有限公司

Dates

Publication Date: 20260508
Application Date: 20260202

Claims (7)

1. The construction method of the combined type ALC window opening outer wall structure is characterized by comprising the following steps of: The adjustable connecting components are fixed on the concrete beam of the building main body structure through expansion bolts, and each group of adjacent adjustable connecting components are spliced and matched through positioning pins; the limiting blocking pieces are connected to the concrete beam and are connected with the adjustable connecting assembly in a positioning way, and the limiting blocking pieces comprise blocking strips; At least one ALC wallboard is connected in the adjustable connecting assembly through a plurality of hook bolts, and the hook bolts are further connected with the adjustable connecting assembly in a welding mode; Before splicing the ALC wallboard, carrying out bar planting treatment on the side wall of the ALC wallboard at the window position, and planting two rows of screw steels along the height direction of the ALC wallboard, wherein each bar planting point between the two rows of screw steels is staggered, and flat steel is welded between the two rows of screw steels; When the ALC wallboard is installed, firstly, an adjustable connecting component is installed on a concrete beam for primary positioning, then a blocking strip is installed to connect and integrate the adjustable connecting components which correspond up and down, and the ALC wallboard is subjected to secondary positioning and side support through the blocking strip; the adjustable connecting assembly comprises angle steel, and T-shaped grooves are symmetrically formed in the outer sides of the vertical end faces of the angle steel; the limiting blocking piece comprises an L-shaped block and blocking strips connected to the L-shaped block, the L-shaped block is arranged in the T-shaped groove in a sliding mode, the blocking strips are connected between the upper L-shaped block and the lower L-shaped block which are opposite to each other, and the L-shaped block is fixed with the concrete beam through expansion bolts; The construction method of the combined ALC window opening outer wall structure comprises the following steps: S1, preparing construction, namely drawing an ALC wallboard layout and a bar planting diagram according to a design drawing, and preparing corresponding materials and tools; S2, preprocessing the ALC wallboard, namely drilling holes, cleaning the holes, injecting glue and implanting screw steels in the preset positions of the ALC wallboard in a staggered arrangement mode, and welding flat steel and all screw steels into a whole after solidification to form reinforcing ribs; S3, installing the adjustable connecting component, namely popping up an installation position line on the concrete beam, drilling holes, and installing and fixing the adjustable connecting component through expansion bolts after the installation is completed; s4, installing a limiting blocking system, namely fixing a blocking strip on the angle steel; s5, installing and fixing the ALC wallboard, namely hoisting the pretreated ALC wallboard between the upper angle steel and the lower angle steel, connecting and locking the ALC wallboard with the angle steel by using a hook bolt, and then welding the hook end of the hook bolt with the angle steel.
2. The construction method of the combined type ALC window opening outer wall structure is characterized in that an installation block A and an installation block B are respectively welded on the horizontal end face of angle steel in a symmetrical mode, a stepped circular groove is formed in the center of the installation block A, a stepped waist-shaped groove is formed in the center of the installation block B, and a sliding groove is formed in the stepped side wall of the waist-shaped groove; a limiting expansion pipe is arranged in the kidney-shaped groove and is clamped in a sliding groove of the kidney-shaped groove in a sliding manner; And the mounting block A, the mounting block B and the limiting expansion pipe are respectively fixed with the concrete beam through expansion bolts penetrating through the circular groove and the waist-shaped groove.
3. The construction method of the combined type ALC window opening and outer wall structure according to claim 2, wherein oblique tooth grooves matched with each other are formed in the outer sides of the stepped surfaces of the round groove and the kidney-shaped groove and the top surface of the limit expansion pipe.
4. The construction method of the combined type ALC window opening and outer wall structure according to claim 2, wherein bolt holes are formed in two sides of the horizontal end face of the angle steel, blocking plates are detachably mounted in the bolt holes through bolts, and the two blocking plates are arranged oppositely.
5. The construction method of the combined type ALC window opening and outer wall structure according to claim 2, wherein the outer walls of the left side and the right side of the angle steel are provided with pin holes, and the left and the right adjacent angle steel are connected through positioning pins inserted into the pin holes.
6. The construction method of the combined type ALC window opening and outer wall structure according to claim 1, wherein two vertical side edges of the ALC wall boards are respectively provided with a board surface groove and a board surface convex groove, and two adjacent ALC wall boards are in scarf joint with the board surface convex grooves through the board surface grooves.
7. The construction method of the combined type ALC window opening and outer wall structure according to claim 2, wherein the limit expansion pipe consists of a pipe barrel and a rectangular sleeve plate, and an inclined tooth slot is formed in the upper end face of the rectangular sleeve plate.

Description

Combined ALC window opening outer wall structure and construction method Technical Field The invention belongs to the technical field of assembled wall construction, and particularly relates to a combined ALC window opening outer wall structure and a construction method. Background Along with the rapid development of the assembled building, the autoclaved aerated concrete wallboard is widely applied to the outer protective structure due to the advantages of light weight, high strength, fire resistance, sound insulation, heat preservation, easiness in processing and the like. In a reinforced concrete structure system, the installation of an ALC wallboard of an outer wall window opening is one of key links of construction, and the installation quality directly influences the appearance, air tightness, water tightness and overall structure safety of a building. The traditional window opening ALC wallboard construction method is usually in-situ high-altitude operation. During construction, workers perform wallboard positioning, temporary support, connection fixing and gap treatment at the high-altitude edge position. The method has the advantages that firstly, the safety risk of high-altitude edge operation is high, the safety protection requirement on constructors is extremely high, falling accidents are prone to occur, secondly, the on-site construction is greatly influenced by weather, environment and technical level of workers, the installation accuracy is difficult to guarantee, the problems of uneven plate surface, loose joints, deviation of perpendicularity and the like often occur, the reworking rate is high, the construction efficiency is low, furthermore, the accuracy requirement on the reserved position by the traditional connection fixing mode (such as purely relying on embedded parts or chemical anchor bolts) is extremely high, once deviation occurs, adjustment is difficult, and the integrity, wind pressure resistance and shock resistance of the connection node are required to be enhanced. Particularly for large window openings where a plurality of ALC wallboards are needed to be spliced, how to ensure the flatness, perpendicularity and overall stability of the spliced seams is a great challenge faced by the traditional construction method. To solve the above problems, some improvement measures have been tried in the industry, such as partial preassembly on the ground or using more complex metal connectors, however, these methods often fail to systematically solve the contradiction between the risk of working aloft, the control of the installation accuracy and the strength of the connection nodes. Either the installation efficiency is sacrificed, or the node performance is not significantly improved, or the overhead fine operation is still not effectively avoided. Therefore, an innovative ALC window opening outer wall structure and a construction method thereof are urgently needed, the complex installation operation of high altitude and adjacent sides can be converted into safe and controllable prefabrication operation on the ground to the greatest extent, and meanwhile, the safe, efficient, high-precision and one-step formed installation of the ALC wall plate of the window opening is realized through a precise connecting system and a strengthening structure, so that the construction quality, efficiency and safety are fundamentally improved. Disclosure of Invention In order to solve the problems, the invention provides a combined ALC window opening and external wall structure and a construction method thereof, which are used for solving the problems in the prior art. In order to achieve the aim, the embodiment of the application provides a combined type ALC window opening outer wall structure which comprises a plurality of groups of adjustable connecting components, a plurality of limiting blocking pieces and at least one ALC wallboard, wherein the plurality of groups of adjustable connecting components are fixed on a concrete beam of a building main body structure through expansion bolts, each group of adjustable connecting components adjacent left and right are in plug-in fit through positioning pins, the plurality of limiting blocking pieces are connected on the concrete beam and are in positioning connection with the adjustable connecting components, the combined type ALC window opening outer wall structure comprises blocking strips, the ALC wallboard is connected in the adjustable connecting components through a plurality of hook head bolts, and the hook head bolts are further connected with the adjustable connecting components through welding. Before splicing the ALC wallboard, carrying out bar planting treatment on the side wall of the ALC wallboard at the window position, planting two rows of screw-thread steel along the height direction of the ALC wallboard, wherein each bar planting point between the two rows of screw-thread steel is in staggered distribution, and flat steel is welded bet